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05/05: gnu: ocaml: Switch to ocaml 4.09 by default.


From: guix-commits
Subject: 05/05: gnu: ocaml: Switch to ocaml 4.09 by default.
Date: Sun, 26 Jan 2020 21:56:33 -0500 (EST)

roptat pushed a commit to branch master
in repository guix.

commit 87858bc526a9d577760f55d05a51cb56630f845b
Author: Julien Lepiller <address@hidden>
AuthorDate: Thu Jan 23 04:39:52 2020 +0100

    gnu: ocaml: Switch to ocaml 4.09 by default.
    
    Bap and earley cannot be updated as they do not support 4.09 yet. Bap 
requires
    the janestreet packages, which cannot be upgraded as no version supports
    4.09 and 4.07 at the same time. Moreover, newer versions of the
    janestreet packages have a different dependency graph, which will
    require a whole new set of packages. We cannot simply use
    package-with-ocaml4.07 on them.
    
    * gnu/packages/ocaml.scm (ocaml-sqlite3, ocaml-ppx-tools, ocaml-gen)
    (ocaml-sedlex, ocaml-pcre, ocaml-expect, ocaml-ezjsonm, ocaml-uri)
    (ocaml-piqilib, ocaml-piqi, ocaml-charinfo-width, ocaml-zed)
    (ocaml-lambda-term, ocaml-utop, ocaml-ppx-inline-test, ocaml-earley)
    (ocaml-merlin, ocaml-gsl, ocaml-gsl-1, ocaml-sexplib0, ocaml-parsexp)
    (ocaml-sexplib, ocaml-base, ocaml-stdio, ocaml-ppxlib, ocaml-ppx-compare)
    (ocaml-fieldslib, ocaml-variantslib, ocaml-ppx-fields-conv)
    (ocaml-ppx-sexp-conv, ocaml-ppx-variants-conv, ocaml-ppx-custom-printf)
    (ocaml-bin-prot, ocaml-ppx-hash, ocaml-ppx-enumerate, ocaml-ppx-bench)
    (ocaml-ppx-here, ocaml-ppx-typerep, ocaml-ppx-sexp-value)
    (ocaml-ppx-sexp-message, ocaml-ppx-pipebang, ocaml-ppx-optional)
    (ocaml-ppx-optcomp, ocaml-ppx-fail, ocaml-ppx-let, ocaml-ppx-assert)
    (ocaml-ppx-expect, ocaml-ppx-js-style, ocaml-ppx-typerep-conv)
    (ocaml-ppx-base, ocaml-ppx-bin-prot, ocaml-ppx-jane)
    (ocaml-splittable-random, ocaml-configurator, ocaml-spawn, ocaml-core)
    (ocaml-core-kernel, ocaml-odoc, ocaml-fftw3, ocaml-lacaml): Rename to ...
    (ocaml4.07-sqlite3, ocaml4.07-ppx-tools, ocaml4.07-gen, ocaml4.07-sedlex)
    (ocaml4.07-pcre, ocaml4.07-expect, ocaml4.07-ezjsonm, ocaml4.07-uri)
    (ocaml4.07-piqilib, ocaml4.07-piqi, ocaml4.07-charinfo-width)
    (ocaml4.07-zed, ocaml4.07-lambda-term, ocaml4.07-utop)
    (ocaml4.07-ppx-inline-test, ocaml4.07-earley, ocaml4.07-merlin)
    (ocaml4.07-gsl, ocaml4.07-gsl-1, ocaml4.07-sexplib0, ocaml4.07-parsexp)
    (ocaml4.07-sexplib, ocaml4.07-base, ocaml4.07-stdio, ocaml4.07-ppxlib)
    (ocaml4.07-ppx-compare, ocaml4.07-fieldslib, ocaml4.07-variantslib)
    (ocaml4.07-ppx-fields-conv, ocaml4.07-ppx-sexp-conv)
    (ocaml4.07-ppx-variants-conv, ocaml4.07-ppx-custom-printf)
    (ocaml4.07-bin-prot, ocaml4.07-ppx-hash, ocaml4.07-ppx-enumerate)
    (ocaml4.07-ppx-bench, ocaml4.07-ppx-here, ocaml4.07-ppx-typerep)
    (ocaml4.07-ppx-sexp-value, ocaml4.07-ppx-sexp-message)
    (ocaml4.07-ppx-pipebang, ocaml4.07-ppx-optional, ocaml4.07-ppx-optcomp)
    (ocaml4.07-ppx-fail, ocaml4.07-ppx-let, ocaml4.07-ppx-assert)
    (ocaml4.07-ppx-expect, ocaml4.07-ppx-js-style)
    (ocaml4.07-ppx-typerep-conv, ocaml4.07-ppx-base, ocaml4.07-ppx-bin-prot)
    (ocaml4.07-ppx-jane, ocaml4.07-splittable-random)
    (ocaml4.07-configurator, ocaml4.07-spawn, ocaml4.07-core)
    (ocaml4.07-core-kernel, ocaml4.07-odoc, ocaml4.07-fftw3)
    (ocaml4.07-lacaml): ... to this and use ocaml 4.07.
    (bap, unison): Use ocaml-4.07.
    * gnu/packages/bioinformatics.scm (pplacer): Use ocaml-4.07.
---
 gnu/packages/bioinformatics.scm |   22 +-
 gnu/packages/ocaml.scm          | 1049 +++++++++++++++++++++++----------------
 2 files changed, 626 insertions(+), 445 deletions(-)

diff --git a/gnu/packages/bioinformatics.scm b/gnu/packages/bioinformatics.scm
index e8dac2a..c71adbe 100644
--- a/gnu/packages/bioinformatics.scm
+++ b/gnu/packages/bioinformatics.scm
@@ -14626,21 +14626,23 @@ let before_space s =
                (let* ((out (assoc-ref outputs "out"))
                       (bin (string-append out "/bin")))
                  (copy-recursively "bin" bin))
-               #t)))))
+               #t)))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
       (inputs
        `(("zlib" ,zlib "static")
          ("gsl" ,gsl)
-         ("ocaml-ounit" ,ocaml-ounit)
-         ("ocaml-batteries" ,ocaml-batteries)
-         ("ocaml-camlzip" ,camlzip)
-         ("ocaml-csv" ,ocaml-csv)
-         ("ocaml-sqlite3" ,ocaml-sqlite3)
-         ("ocaml-xmlm" ,ocaml-xmlm)
-         ("ocaml-mcl" ,ocaml-mcl)
-         ("ocaml-gsl" ,ocaml-gsl-1)))
+         ("ocaml-ounit" ,(package-with-ocaml4.07 ocaml-ounit))
+         ("ocaml-batteries" ,(package-with-ocaml4.07 ocaml-batteries))
+         ("ocaml-camlzip" ,(package-with-ocaml4.07 camlzip))
+         ("ocaml-csv" ,(package-with-ocaml4.07 ocaml-csv))
+         ("ocaml-sqlite3" ,ocaml4.07-sqlite3)
+         ("ocaml-xmlm" ,(package-with-ocaml4.07 ocaml-xmlm))
+         ("ocaml-mcl" ,(package-with-ocaml4.07 ocaml-mcl))
+         ("ocaml-gsl" ,ocaml4.07-gsl-1)))
       (native-inputs
        `(("cddlib-src" ,(package-source cddlib))
-         ("ocamlbuild" ,ocamlbuild)
+         ("ocamlbuild" ,(package-with-ocaml4.07 ocamlbuild))
          ("pkg-config" ,pkg-config)))
       (propagated-inputs
        `(("pplacer-scripts" ,pplacer-scripts)))
diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
index f56658e..df998af 100644
--- a/gnu/packages/ocaml.scm
+++ b/gnu/packages/ocaml.scm
@@ -228,7 +228,7 @@ functional, imperative and object-oriented styles of 
programming.")
                           "--prefix" out
                           "--mandir" mandir))))))))))
 
-(define-public ocaml ocaml-4.07)
+(define-public ocaml ocaml-4.09)
 
 (define-public ocamlbuild
   (package
@@ -852,7 +852,7 @@ libpanel, librsvg and quartz.")
     (outputs '("out"
                "doc"))                  ; 1.9 MiB of documentation
     (native-inputs
-     `(("ocaml" ,ocaml)
+     `(("ocaml" ,ocaml-4.07)
        ;; For documentation
        ("ghostscript" ,ghostscript)
        ("texlive" ,texlive-tiny)
@@ -1444,9 +1444,9 @@ to operate on the result type available from OCaml 4.03 
in the standard
 library.")
     (license license:isc)))
 
-(define-public ocaml-sqlite3
+(define-public ocaml4.07-sqlite3
   (package
-    (name "ocaml-sqlite3")
+    (name "ocaml4.07-sqlite3")
     (version "4.4.1")
     (source
      (origin
@@ -1459,9 +1459,12 @@ library.")
         (base32
          "1536agm5fgcqysszhpd3kmw7lkc5n5ni7gmlyglrbvmnmrwf3av2"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
-     `(("ocaml-base" ,ocaml-base)
-       ("ocaml-stdio" ,ocaml-stdio)
+     `(("ocaml-base" ,ocaml4.07-base)
+       ("ocaml-stdio" ,ocaml4.07-stdio)
        ("pkg-config" ,pkg-config)))
     (inputs
      `(("sqlite" ,sqlite)))
@@ -1671,9 +1674,9 @@ displayed at the end of the run (with the full logs ready 
to inspect), with a
 simple (yet expressive) query language to select the tests to run.")
     (license license:isc)))
 
-(define-public ocaml-ppx-tools
+(define-public ocaml4.07-ppx-tools
   (package
-    (name "ocaml-ppx-tools")
+    (name "ocaml4.07-ppx-tools")
     (version "5.1+4.06.0")
     (source
      (origin
@@ -1687,7 +1690,9 @@ simple (yet expressive) query language to select the 
tests to run.")
     (build-system ocaml-build-system)
     (arguments
      `(#:phases (modify-phases %standard-phases (delete 'configure))
-       #:tests? #f))
+       #:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties `((upstream-name . "ppx_tools")))
     (home-page "https://github.com/alainfrisch/ppx_tools";)
     (synopsis "Tools for authors of ppx rewriters and other syntactic tools")
@@ -1987,9 +1992,9 @@ format.  It can process XML documents without a complete 
in-memory
 representation of the data.")
     (license license:isc)))
 
-(define-public ocaml-gen
+(define-public ocaml4.07-gen
   (package
-    (name "ocaml-gen")
+    (name "ocaml4.07-gen")
     (version "0.5.2")
     (source (origin
               (method git-fetch)
@@ -2003,21 +2008,23 @@ representation of the data.")
     (build-system dune-build-system)
     (arguments
      `(#:tests? #f; no tests
-       #:package "gen"))
+       #:package "gen"
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-     `(("ocaml-odoc" ,ocaml-odoc)))
+     `(("ocaml-odoc" ,ocaml4.07-odoc)))
     (native-inputs
-     `(("ocaml-qtest" ,ocaml-qtest)
-       ("ocaml-qcheck" ,ocaml-qcheck)))
+     `(("ocaml-qtest" ,(package-with-ocaml4.07 ocaml-qtest))
+       ("ocaml-qcheck" ,(package-with-ocaml4.07 ocaml-qcheck))))
     (home-page "https://github.com/c-cube/gen/";)
     (synopsis "Iterators for OCaml, both restartable and consumable")
     (description "Gen implements iterators of OCaml, that are both restartable
 and consumable.")
     (license license:bsd-2)))
 
-(define-public ocaml-sedlex
+(define-public ocaml4.07-sedlex
   (package
-    (name "ocaml-sedlex")
+    (name "ocaml4.07-sedlex")
     (version "2.1")
     (source (origin
               (method git-fetch)
@@ -2046,13 +2053,16 @@ and consumable.")
          (add-before 'build 'chmod
            (lambda _
              (for-each (lambda (file) (chmod file #o644)) (find-files "." 
".*"))
-             #t)))))
+             #t)))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
-     `(("ocamlbuild" ,ocamlbuild)))
+     `(("ocamlbuild" ,(package-with-ocaml4.07 ocamlbuild))))
     (propagated-inputs
-     `(("ocaml-gen" ,ocaml-gen)
-       ("ocaml-ppx-tools-versioned" ,ocaml-ppx-tools-versioned)
-       ("ocaml-uchar" ,ocaml-uchar)))
+     `(("ocaml-gen" ,ocaml4.07-gen)
+       ("ocaml-ppx-tools-versioned"
+        ,(package-with-ocaml4.07 ocaml-ppx-tools-versioned))
+       ("ocaml-uchar" ,(package-with-ocaml4.07 ocaml-uchar))))
     ;; These three files are needed by src/generator/data/dune, but would be
     ;; downloaded using curl at build time.
     (inputs
@@ -2358,9 +2368,9 @@ every compliant installation of OCaml and organize these 
libraries into a
 hierarchy of modules.")
     (license license:lgpl2.1+)))
 
-(define-public ocaml-pcre
+(define-public ocaml4.07-pcre
   (package
-    (name "ocaml-pcre")
+    (name "ocaml4.07-pcre")
     (version "7.4.1")
     (source (origin
               (method git-fetch)
@@ -2373,9 +2383,12 @@ hierarchy of modules.")
                 "11sd8g668h48790lamz0riw9jgnfkaif5qdfa0akcndwa6aj07jf"))))
     (build-system dune-build-system)
     (arguments
-     `(#:test-target "."))
+     `(#:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib
+       #:dune ,ocaml4.07-dune))
     (native-inputs
-     `(("ocaml-base" ,ocaml-base)
+     `(("ocaml-base" ,ocaml4.07-base)
        ("pcre:bin" ,pcre "bin")))
     (propagated-inputs `(("pcre" ,pcre)))
     (home-page "https://mmottl.github.io/pcre-ocaml";)
@@ -2385,9 +2398,9 @@ matching and substitution, similar to the functionality 
offered by the Perl
 language.")
     (license license:lgpl2.1+))); with the OCaml link exception
 
-(define-public ocaml-expect
+(define-public ocaml4.07-expect
   (package
-    (name "ocaml-expect")
+    (name "ocaml4.07-expect")
     (version "0.0.6")
     (source (origin
               (method url-fetch)
@@ -2396,14 +2409,17 @@ language.")
                (base32
                 "098qvg9d4yrqzr5ax291y3whrpax0m3sx4gi6is0mblc96r9yqk0"))))
     (arguments
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (build-system ocaml-build-system)
     (native-inputs
-     `(("ocamlbuild" ,ocamlbuild)
-       ("ocaml-num" ,ocaml-num)
-       ("ocaml-pcre" ,ocaml-pcre)
-       ("ounit" ,ocaml-ounit)))
-    (propagated-inputs `(("batteries" ,ocaml-batteries)))
+     `(("ocamlbuild" ,(package-with-ocaml4.07 ocamlbuild))
+       ("ocaml-num" ,(package-with-ocaml4.07 ocaml-num))
+       ("ocaml-pcre" ,ocaml4.07-pcre)
+       ("ounit" ,(package-with-ocaml4.07 ocaml-ounit))))
+    (propagated-inputs
+     `(("batteries" ,(package-with-ocaml4.07 ocaml-batteries))))
     (home-page "https://forge.ocamlcore.org/projects/ocaml-expect/";)
     (synopsis "Simple implementation of expect")
     (description "Help building unitary testing of interactive program.  You
@@ -2712,9 +2728,9 @@ writing to these structures, and they are accessed via 
the Bigarray module.")
     (description "Hex is a minimal library providing hexadecimal converters.")
     (license license:isc)))
 
-(define-public ocaml-ezjsonm
+(define-public ocaml4.07-ezjsonm
   (package
-    (name "ocaml-ezjsonm")
+    (name "ocaml4.07-ezjsonm")
     (version "1.1.0")
     (source
      (origin
@@ -2728,13 +2744,15 @@ writing to these structures, and they are accessed via 
the Bigarray module.")
     (build-system dune-build-system)
     (arguments
      `(#:package "ezjsonm"
-       #:test-target "."))
+       #:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
-     `(("ocaml-alcotest" ,ocaml-alcotest)))
+     `(("ocaml-alcotest" ,(package-with-ocaml4.07 ocaml-alcotest))))
     (propagated-inputs
-     `(("ocaml-hex" ,ocaml-hex)
-       ("ocaml-jsonm" ,ocaml-jsonm)
-       ("ocaml-sexplib" ,ocaml-sexplib)))
+     `(("ocaml-hex" ,(package-with-ocaml4.07 ocaml-hex))
+       ("ocaml-jsonm" ,(package-with-ocaml4.07 ocaml-jsonm))
+       ("ocaml-sexplib" ,ocaml4.07-sexplib)))
     (home-page "https://github.com/mirage/ezjsonm/";)
     (synopsis "Read and write JSON data")
     (description "Ezjsonm provides more convenient (but far less flexible) 
input
@@ -2743,9 +2761,9 @@ the need to write signal code, which is useful for quick 
scripts that manipulate
 JSON.")
     (license license:isc)))
 
-(define-public ocaml-uri
+(define-public ocaml4.07-uri
   (package
-    (name "ocaml-uri")
+    (name "ocaml4.07-uri")
     (version "2.2.0")
     (source
      (origin
@@ -2764,14 +2782,16 @@ JSON.")
          (add-before 'build 'update-deprecated
            (lambda _
              (substitute* "lib/uri.ml"
-               (("Re.get") "Re.Group.get")))))))
+               (("Re.get") "Re.Group.get")))))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
-     `(("ocaml-ounit" ,ocaml-ounit)
-       ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)))
+     `(("ocaml-ounit" ,(package-with-ocaml4.07 ocaml-ounit))
+       ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)))
     (propagated-inputs
-     `(("ocaml-re" ,ocaml-re)
-       ("ocaml-sexplib0" ,ocaml-sexplib0)
-       ("ocaml-stringext" ,ocaml-stringext)))
+     `(("ocaml-re" ,(package-with-ocaml4.07 ocaml-re))
+       ("ocaml-sexplib0" ,ocaml4.07-sexplib0)
+       ("ocaml-stringext" ,(package-with-ocaml4.07 ocaml-stringext))))
     (home-page "https://github.com/mirage/ocaml-uri";)
     (synopsis "RFC3986 URI/URL parsing library")
     (description "OCaml-uri is a library for parsing URI/URL in the RFC3986 
format.")
@@ -2808,9 +2828,9 @@ JSON.")
 Format module of the OCaml standard library.")
     (license license:bsd-3)))
 
-(define-public ocaml-piqilib
+(define-public ocaml4.07-piqilib
   (package
-    (name "ocaml-piqilib")
+    (name "ocaml4.07-piqilib")
     (version "0.6.15")
     (source
      (origin
@@ -2854,14 +2874,16 @@ Format module of the OCaml standard library.")
              (mkdir-p stubs)
              (symlink (string-append lib "/dllpiqilib_stubs.so")
                       (string-append stubs "/dllpiqilib_stubs.so"))
-             #t))))))
+             #t))))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
      `(("which" ,which)))
     (propagated-inputs
-     `(("ocaml-xmlm" ,ocaml-xmlm)
-       ("ocaml-sedlex" ,ocaml-sedlex)
-       ("ocaml-easy-format" ,ocaml-easy-format)
-       ("ocaml-base64" ,ocaml-base64)))
+     `(("ocaml-xmlm" ,(package-with-ocaml4.07 ocaml-xmlm))
+       ("ocaml-sedlex" ,ocaml4.07-sedlex)
+       ("ocaml-easy-format" ,(package-with-ocaml4.07 ocaml-easy-format))
+       ("ocaml-base64" ,(package-with-ocaml4.07 ocaml-base64))))
     (home-page "http://piqi.org";)
     (synopsis "Data serialization and conversion library")
     (description "Piqilib is the common library used by the piqi command-line
@@ -2927,9 +2949,9 @@ and 4 (random based) according to RFC 4122.")
     (description "OCamlgraph is a generic graph library for OCaml.")
     (license license:lgpl2.1)))
 
-(define-public ocaml-piqi
+(define-public ocaml4.07-piqi
   (package
-    (name "ocaml-piqi")
+    (name "ocaml4.07-piqi")
     (version "0.7.7")
     (source (origin
               (method url-fetch)
@@ -2947,14 +2969,16 @@ and 4 (random based) according to RFC 4122.")
                             "/bin/sh"))
        #:phases
        (modify-phases %standard-phases
-         (delete 'configure))))
+         (delete 'configure))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
      `(("which" ,which)
        ("protobuf" ,protobuf))) ; for tests
     (propagated-inputs
-     `(("ocaml-num" ,ocaml-num)
-       ("ocaml-piqilib" ,ocaml-piqilib)
-       ("ocaml-stdlib-shims" ,ocaml-stdlib-shims)))
+     `(("ocaml-num" ,(package-with-ocaml4.07 ocaml-num))
+       ("ocaml-piqilib" ,ocaml4.07-piqilib)
+       ("ocaml-stdlib-shims" ,(package-with-ocaml4.07 ocaml-stdlib-shims))))
     (home-page "https://github.com/alavrik/piqi-ocaml";)
     (synopsis "Protocol serialization system for OCaml")
     (description "Piqi is a multi-format data serialization system for OCaml.
@@ -2978,24 +3002,24 @@ XML and Protocol Buffers formats.")
                 "0ryf2xb37pj2f9mc3p5prqgqrylph9qgq7q9jnbx8b03nzzpa6h6"))))
    (build-system ocaml-build-system)
    (native-inputs
-    `(("ocaml-oasis" ,ocaml-oasis)
+    `(("ocaml-oasis" ,(package-with-ocaml4.07 ocaml-oasis))
       ("clang" ,clang-3.8)
-      ("ocaml-ounit" ,ocaml-ounit)))
+      ("ocaml-ounit" ,(package-with-ocaml4.07 ocaml-ounit))))
    (propagated-inputs
-    `(("camlzip" ,camlzip)
-      ("ocaml-bitstring" ,ocaml-bitstring)
-      ("ocaml-cmdliner" ,ocaml-cmdliner)
-      ("ocaml-core-kernel" ,ocaml-core-kernel)
-      ("ocaml-ezjsonm" ,ocaml-ezjsonm)
-      ("ocaml-fileutils" ,ocaml-fileutils)
-      ("ocaml-frontc" ,ocaml-frontc)
-      ("ocaml-graph" ,ocaml-graph)
-      ("ocaml-ocurl" ,ocaml-ocurl)
-      ("ocaml-piqi" ,ocaml-piqi)
-      ("ocaml-ppx-jane" ,ocaml-ppx-jane)
-      ("ocaml-uuidm" ,ocaml-uuidm)
-      ("ocaml-uri" ,ocaml-uri)
-      ("ocaml-zarith" ,ocaml-zarith)))
+    `(("camlzip" ,(package-with-ocaml4.07 camlzip))
+      ("ocaml-bitstring" ,(package-with-ocaml4.07 ocaml-bitstring))
+      ("ocaml-cmdliner" ,(package-with-ocaml4.07 ocaml-cmdliner))
+      ("ocaml-core-kernel" ,ocaml4.07-core-kernel)
+      ("ocaml-ezjsonm" ,ocaml4.07-ezjsonm)
+      ("ocaml-fileutils" ,(package-with-ocaml4.07 ocaml-fileutils))
+      ("ocaml-frontc" ,(package-with-ocaml4.07 ocaml-frontc))
+      ("ocaml-graph" ,(package-with-ocaml4.07 ocaml-graph))
+      ("ocaml-ocurl" ,(package-with-ocaml4.07 ocaml-ocurl))
+      ("ocaml-piqi" ,ocaml4.07-piqi)
+      ("ocaml-ppx-jane" ,ocaml4.07-ppx-jane)
+      ("ocaml-uuidm" ,(package-with-ocaml4.07 ocaml-uuidm))
+      ("ocaml-uri" ,ocaml4.07-uri)
+      ("ocaml-zarith" ,(package-with-ocaml4.07 ocaml-zarith))))
    (inputs
     `(("llvm" ,llvm-3.8)
       ("gmp" ,gmp)))
@@ -3019,7 +3043,9 @@ XML and Protocol Buffers formats.")
                       "/lib/ocaml/site-lib")
                     "--with-llvm-version=3.8"
                     "--with-llvm-config=llvm-config"
-                    "--enable-everything"))))))
+                    "--enable-everything"))))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
    (synopsis "Binary Analysis Platform")
    (description "Binary Analysis Platform is a framework for writing program
 analysis tools, that target binary files.  The framework consists of a plethora
@@ -3059,9 +3085,9 @@ library is currently designed for Unicode Standard 3.2.")
     ;; with an exception for linked libraries to use a different license
     (license license:lgpl2.0+)))
 
-(define-public ocaml-charinfo-width
+(define-public ocaml4.07-charinfo-width
   (package
-    (name "ocaml-charinfo-width")
+    (name "ocaml4.07-charinfo-width")
     (version "1.1.0")
     (source (origin
               (method url-fetch)
@@ -3072,11 +3098,14 @@ library is currently designed for Unicode Standard 
3.2.")
                (base32
                 "00bv4p1yqs8y0z4z07wd9w9yyv669dikp9b04dcjbwpiy2wy0086"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-     `(("ocaml-result" ,ocaml-result)
-       ("ocaml-camomile" ,ocaml-camomile)))
+     `(("ocaml-result" ,(package-with-ocaml4.07 ocaml-result))
+       ("ocaml-camomile" ,(package-with-ocaml4.07 ocaml-camomile))))
     (native-inputs
-     `(("ocaml-ppx-expect" ,ocaml-ppx-expect)))
+     `(("ocaml-ppx-expect" ,ocaml4.07-ppx-expect)))
     (properties
      `((upstream-name . "charInfo_width")))
     (home-page "https://bitbucket.org/zandoye/charinfo_width/";)
@@ -3085,9 +3114,9 @@ library is currently designed for Unicode Standard 3.2.")
 function that follows the prototype of POSIX's wcwidth.")
     (license license:expat)))
 
-(define-public ocaml-zed
+(define-public ocaml4.07-zed
   (package
-    (name "ocaml-zed")
+    (name "ocaml4.07-zed")
     (version "2.0.3")
     (source
      (origin
@@ -3101,11 +3130,13 @@ function that follows the prototype of POSIX's 
wcwidth.")
     (build-system dune-build-system)
     (arguments
      `(#:jbuild? #t
-       #:test-target "."))
+       #:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-     `(("ocaml-camomile" ,ocaml-camomile)
-       ("ocaml-charinfo-width" ,ocaml-charinfo-width)
-       ("ocaml-react" ,ocaml-react)))
+     `(("ocaml-camomile" ,(package-with-ocaml4.07 ocaml-camomile))
+       ("ocaml-charinfo-width" ,ocaml4.07-charinfo-width)
+       ("ocaml-react" ,(package-with-ocaml4.07 ocaml-react))))
     (home-page "https://github.com/diml/zed";)
     (synopsis "Abstract engine for text editing in OCaml")
     (description "Zed is an abstract engine for text edition.  It can be used
@@ -3113,9 +3144,9 @@ to write text editors, edition widgets, readlines, etc.  
You just have to
 connect an engine to your inputs and rendering functions to get an editor.")
     (license license:bsd-3)))
 
-(define-public ocaml-lambda-term
+(define-public ocaml4.07-lambda-term
   (package
-    (name "ocaml-lambda-term")
+    (name "ocaml4.07-lambda-term")
     (version "2.0.2")
     (source
      (origin
@@ -3129,12 +3160,14 @@ connect an engine to your inputs and rendering 
functions to get an editor.")
     (build-system dune-build-system)
     (arguments
      `(#:build-flags (list "--profile" "release")
-       #:tests? #f))
+       #:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-     `(("ocaml-lwt" ,ocaml-lwt)
-       ("ocaml-lwt-log" ,ocaml-lwt-log)
-       ("ocaml-lwt-react" ,ocaml-lwt-react)
-       ("ocaml-zed" ,ocaml-zed)))
+     `(("ocaml-lwt" ,(package-with-ocaml4.07 ocaml-lwt))
+       ("ocaml-lwt-log" ,(package-with-ocaml4.07 ocaml-lwt-log))
+       ("ocaml-lwt-react" ,(package-with-ocaml4.07 ocaml-lwt-react))
+       ("ocaml-zed" ,ocaml4.07-zed)))
     (inputs
      `(("libev" ,libev)))
     (home-page "https://github.com/diml/lambda-term";)
@@ -3147,9 +3180,9 @@ manipulation than, for example, ncurses, by providing a 
native OCaml interface
 instead of bindings to a C library.")
     (license license:bsd-3)))
 
-(define-public ocaml-utop
+(define-public ocaml4.07-utop
   (package
-    (name "ocaml-utop")
+    (name "ocaml4.07-utop")
     (version "2.4.3")
     (source
      (origin
@@ -3163,15 +3196,17 @@ instead of bindings to a C library.")
     (build-system dune-build-system)
     (arguments
      `(#:jbuild? #t
-       #:test-target "."))
+       #:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
-     `(("cppo" ,ocaml-cppo)))
+     `(("cppo" ,(package-with-ocaml4.07 ocaml-cppo))))
     (propagated-inputs
-     `(("lambda-term" ,ocaml-lambda-term)
-       ("lwt" ,ocaml-lwt)
-       ("react" ,ocaml-react)
-       ("camomile" ,ocaml-camomile)
-       ("zed" ,ocaml-zed)))
+     `(("lambda-term" ,ocaml4.07-lambda-term)
+       ("lwt" ,(package-with-ocaml4.07 ocaml-lwt))
+       ("react" ,(package-with-ocaml4.07 ocaml-react))
+       ("camomile" ,(package-with-ocaml4.07 ocaml-camomile))
+       ("zed" ,ocaml4.07-zed)))
     (home-page "https://github.com/ocaml-community/utop";)
     (synopsis "Improved interface to the OCaml toplevel")
     (description "UTop is an improved toplevel for OCaml.  It can run in a
@@ -3437,9 +3472,9 @@ Dedukti files.")
 syntax checking on dedukti files.")
       (license license:cecill-b))))
 
-(define-public ocaml-ppx-inline-test
+(define-public ocaml4.07-ppx-inline-test
   (package
-    (name "ocaml-ppx-inline-test")
+    (name "ocaml4.07-ppx-inline-test")
     (version "0.12.0")
     (home-page "https://github.com/janestreet/ppx_inline_test";)
     (source
@@ -3455,14 +3490,17 @@ syntax checking on dedukti files.")
     (build-system dune-build-system)
     (arguments
      ;see home page README for further information
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (inputs
-     `(("ocaml-base" ,ocaml-base)
-       ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-       ("ocaml-compiler-libs" ,ocaml-compiler-libs)
-       ("ocaml-sexplib0" ,ocaml-sexplib0)
-       ("ocaml-stdio" ,ocaml-stdio)
-       ("ocaml-ppxlib" ,ocaml-ppxlib)))
+     `(("ocaml-base" ,ocaml4.07-base)
+       ("ocaml-migrate-parsetree"
+        ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+       ("ocaml-compiler-libs" ,(package-with-ocaml4.07 ocaml-compiler-libs))
+       ("ocaml-sexplib0" ,ocaml4.07-sexplib0)
+       ("ocaml-stdio" ,ocaml4.07-stdio)
+       ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_inline_test")))
     (synopsis "Syntax extension for writing in-line tests in ocaml code")
     (description "This package contains a syntax extension for writing
@@ -3508,9 +3546,9 @@ for programming languages, but also for manipulating 
terms of the λ-calculus
 or quantified formulas.")
     (license license:gpl3+)))
 
-(define-public ocaml-earley
+(define-public ocaml4.07-earley
   (package
-    (name "ocaml-earley")
+    (name "ocaml4.07-earley")
     (version "2.0.0")
     (home-page "https://github.com/rlepigre/ocaml-earley";)
     (source
@@ -3525,7 +3563,9 @@ or quantified formulas.")
          "18k7bi7krc4bvqnhijz1q0pfr0nfahghfjifci8rh1q4i5zd0xz5"))))
     (build-system dune-build-system)
     (arguments
-     `(#:test-target "."))
+     `(#:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (synopsis "Parsing library based on Earley Algorithm")
     (description "Earley is a parser combinator library base on Earley's
 algorithm.  It is intended to be used in conjunction with an OCaml syntax
@@ -3675,9 +3715,9 @@ Mercurial's @code{https://www.selenic.com/blog/?p=663, 
unified test
 format}.  @code{craml} is released as a single binary (called @code{craml}).")
     (license license:isc)))
 
-(define-public ocaml-merlin
+(define-public ocaml4.07-merlin
   (package
-    (name "ocaml-merlin")
+    (name "ocaml4.07-merlin")
     (version "3.2.2")
     (home-page "https://ocaml.github.io/merlin/";)
     (source
@@ -3692,14 +3732,16 @@ format}.  @code{craml} is released as a single binary 
(called @code{craml}).")
          "15ssgmwdxylbwhld9p1cq8x6kadxyhll5bfyf11dddj6cldna3hb"))))
     (build-system dune-build-system)
     (inputs
-     `(("ocaml-biniou" ,ocaml-biniou)
-       ("ocaml-yojson" ,ocaml-yojson)
-       ("ocaml-easy-format" ,ocaml-easy-format)))
+     `(("ocaml-biniou" ,(package-with-ocaml4.07 ocaml-biniou))
+       ("ocaml-yojson" ,(package-with-ocaml4.07 ocaml-yojson))
+       ("ocaml-easy-format" ,(package-with-ocaml4.07 ocaml-easy-format))))
     (native-inputs
      `(("ocaml-findlib" ,ocaml-findlib)))
     (arguments
-     '(#:jbuild? #t
-       #:tests? #f)) ;; Errors in tests in version 3.2.2
+     `(#:jbuild? #t
+       #:tests? #f ;; Errors in tests in version 3.2.2
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (synopsis "Context sensitive completion for OCaml in Vim and Emacs")
     (description "Merlin is an editor service that provides modern IDE
 features for OCaml.  Emacs and Vim support is provided out-of-the-box.
@@ -3707,9 +3749,9 @@ External contributors added support for Visual Studio 
Code, Sublime Text and
 Atom.")
     (license license:expat)))
 
-(define-public ocaml-gsl
+(define-public ocaml4.07-gsl
   (package
-    (name "ocaml-gsl")
+    (name "ocaml4.07-gsl")
     (version "1.24.0")
     (source
      (origin
@@ -3730,12 +3772,15 @@ Atom.")
            (lambda* (#:key inputs #:allow-other-keys)
              (substitute* "src/config/discover.ml"
                (("/usr") (assoc-ref inputs "gsl")))
-             #t)))))
+             #t)))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib
+       #:dune ,ocaml4.07-dune))
     (inputs
      `(("gsl" ,gsl)))
     (propagated-inputs
-     `(("ocaml-base" ,ocaml-base)
-       ("ocaml-stdio" ,ocaml-stdio)))
+     `(("ocaml-base" ,ocaml4.07-base)
+       ("ocaml-stdio" ,ocaml4.07-stdio)))
     (home-page "https://mmottl.github.io/gsl-ocaml";)
     (synopsis "Bindings to the GNU Scientific Library")
     (description
@@ -3743,9 +3788,9 @@ Atom.")
 the OCaml language.")
     (license license:gpl3+)))
 
-(define-public ocaml-gsl-1
+(define-public ocaml4.07-gsl-1
   (package
-    (inherit ocaml-gsl)
+    (inherit ocaml4.07-gsl)
     (version "1.19.3")
     (source (origin
               (method url-fetch)
@@ -3759,8 +3804,10 @@ the OCaml language.")
     (inputs
      `(("gsl" ,gsl)))
     (native-inputs
-     `(("ocamlbuild" ,ocamlbuild)))
-    (arguments '())
+     `(("ocamlbuild" ,(package-with-ocaml4.07 ocamlbuild))))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs '())))
 
 (define-public cubicle
@@ -3821,9 +3868,9 @@ an arbitrary number of processes.  Cache coherence 
protocols and mutual
 exclusion algorithms are typical examples of such systems.")
     (license license:asl2.0)))
 
-(define-public ocaml-sexplib0
+(define-public ocaml4.07-sexplib0
   (package
-    (name "ocaml-sexplib0")
+    (name "ocaml4.07-sexplib0")
     (version "0.11.0")
     (home-page "https://github.com/janestreet/sexplib0";)
     (source
@@ -3838,7 +3885,9 @@ exclusion algorithms are typical examples of such 
systems.")
          "07v3ggyss7xhfv14bjk1n87sr42iqwj4cgjiv2lcdfkqk49i2bmi"))))
     (build-system dune-build-system)
     (arguments
-     '(#:tests? #f)) ;no tests
+     `(#:tests? #f ;no tests
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (synopsis "Library containing the definition of S-expressions and some
 base converters")
     (description "Part of Jane Street's Core library The Core suite of
@@ -3846,9 +3895,9 @@ libraries is an industrial strength alternative to 
OCaml's standard library
 that was developed by Jane Street, the largest industrial user of OCaml.")
 (license license:expat)))
 
-(define-public ocaml-parsexp
+(define-public ocaml4.07-parsexp
   (package
-    (name "ocaml-parsexp")
+    (name "ocaml4.07-parsexp")
     (version "0.11.0")
     (home-page "https://github.com/janestreet/parsexp";)
     (source
@@ -3862,8 +3911,11 @@ that was developed by Jane Street, the largest 
industrial user of OCaml.")
         (base32
          "1nyq23s5igd8cf3n4qxprjvhbmb6ighb3fy5mw7hxl0mdgsw5fvz"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (inputs
-     `(("ocaml-sexplib0" ,ocaml-sexplib0)))
+     `(("ocaml-sexplib0" ,ocaml4.07-sexplib0)))
     (synopsis "S-expression parsing library")
     (description
      "This library provides generic parsers for parsing S-expressions from
@@ -3892,9 +3944,9 @@ s-expressions from files or other external sources, you 
should use
 parsexp_io.")
     (license license:expat)))
 
-(define-public ocaml-sexplib
+(define-public ocaml4.07-sexplib
   (package
-    (name "ocaml-sexplib")
+    (name "ocaml4.07-sexplib")
     (version "0.11.0")
     (home-page "https://github.com/janestreet/sexplib";)
     (source
@@ -3908,10 +3960,13 @@ parsexp_io.")
         (base32
          "1qfl0m04rpcjvc4yw1hzh6r16jpwmap0sa9ax6zjji67dz4szpyb"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-     `(("ocaml-num" ,ocaml-num)
-       ("ocaml-parsexp" ,ocaml-parsexp)
-       ("ocaml-sexplib0" ,ocaml-sexplib0)))
+     `(("ocaml-num" ,(package-with-ocaml4.07 ocaml-num))
+       ("ocaml-parsexp" ,ocaml4.07-parsexp)
+       ("ocaml-sexplib0" ,ocaml4.07-sexplib0)))
     (synopsis
      "Library for serializing OCaml values to and from S-expressions")
     (description
@@ -3919,9 +3974,9 @@ parsexp_io.")
 functionality for parsing and pretty-printing s-expressions.")
     (license license:expat)))
 
-(define-public ocaml-base
+(define-public ocaml4.07-base
   (package
-    (name "ocaml-base")
+    (name "ocaml4.07-base")
     (version "0.11.1")
     (home-page "https://github.com/janestreet/base";)
     (source
@@ -3936,14 +3991,16 @@ functionality for parsing and pretty-printing 
s-expressions.")
          "0j6xb4265jr41vw4fjzak6yr8s30qrnzapnc6rl1dxy8bjai0nir"))))
     (build-system dune-build-system)
     (propagated-inputs
-     `(("ocaml-sexplib0" ,ocaml-sexplib0)))
+     `(("ocaml-sexplib0" ,ocaml4.07-sexplib0)))
     (arguments
      `(#:phases
        (modify-phases %standard-phases
          (replace 'build
            ;; make warnings non fatal (jbuilder behaviour)
            (lambda _
-             (invoke "dune" "build" "@install" "--profile=release"))))))
+             (invoke "dune" "build" "@install" "--profile=release"))))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
   (synopsis
     "Full standard library replacement for OCaml")
   (description
@@ -3983,9 +4040,9 @@ so they don't expose everything at toplevel.  For 
instance, @code{Ast_helper}
 is now @code{Ocaml_common.Ast_helper}.")
     (license license:expat)))
 
-(define-public ocaml-stdio
+(define-public ocaml4.07-stdio
   (package
-    (name "ocaml-stdio")
+    (name "ocaml4.07-stdio")
     (version "0.11.0")
     (home-page "https://github.com/janestreet/stdio";)
     (source
@@ -4000,10 +4057,12 @@ is now @code{Ocaml_common.Ast_helper}.")
          "1facajqhvq34g2wrg368y0ajxd6lrj5b3lyzyj0jhdmraxajjcwn"))))
     (build-system dune-build-system)
     (propagated-inputs
-     `(("ocaml-base" ,ocaml-base)
-       ("ocaml-sexplib0" ,ocaml-sexplib0)))
+     `(("ocaml-base" ,ocaml4.07-base)
+       ("ocaml-sexplib0" ,ocaml4.07-sexplib0)))
     (arguments
-     '(#:tests? #f)) ;no tests
+     `(#:tests? #f ;no tests
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (synopsis "Standard IO library for OCaml")
     (description
      "Stdio implements simple input/output functionalities for OCaml.  It
@@ -4038,9 +4097,9 @@ ppx_deriving and ppx_type_conv to inter-operate 
gracefully when linked
 as part of the same ocaml-migrate-parsetree driver.")
     (license license:bsd-3)))
 
-(define-public ocaml-ppxlib
+(define-public ocaml4.07-ppxlib
   (package
-    (name "ocaml-ppxlib")
+    (name "ocaml4.07-ppxlib")
     (version "0.6.0")
     (home-page "https://github.com/ocaml-ppx/ppxlib";)
     (source
@@ -4055,15 +4114,16 @@ as part of the same ocaml-migrate-parsetree driver.")
          "0my9x7sxb329h0lzshppdaawiyfbaw6g5f41yiy7bhl071rnlvbv"))))
     (build-system dune-build-system)
     (propagated-inputs
-     `(("ocaml-base" ,ocaml-base)
-       ("ocaml-compiler-libs" ,ocaml-compiler-libs)
-       ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-       ("ocaml-ppx-derivers" ,ocaml-ppx-derivers)
-       ("ocaml-stdio" ,ocaml-stdio)
-       ("ocaml-result" ,ocaml-result)
-       ("ocaml-sexplib0" ,ocaml-sexplib0)))
+     `(("ocaml-base" ,ocaml4.07-base)
+       ("ocaml-compiler-libs" ,(package-with-ocaml4.07 ocaml-compiler-libs))
+       ("ocaml-migrate-parsetree"
+        ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+       ("ocaml-ppx-derivers" ,(package-with-ocaml4.07 ocaml-ppx-derivers))
+       ("ocaml-stdio" ,ocaml4.07-stdio)
+       ("ocaml-result" ,(package-with-ocaml4.07 ocaml-result))
+       ("ocaml-sexplib0" ,ocaml4.07-sexplib0)))
     (arguments
-     '(#:phases
+     `(#:phases
        (modify-phases %standard-phases
          (add-before 'check 'set-topfind
            (lambda* (#:key inputs #:allow-other-keys)
@@ -4081,7 +4141,9 @@ as part of the same ocaml-migrate-parsetree driver.")
                  (("#use \"topfind\";;" all)
                   (string-append "#directory \"" findlib-libdir "\"\n"
                                  all))))
-             #t)))))
+             #t)))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (synopsis
      "Base library and tools for ppx rewriters")
     (description
@@ -4099,9 +4161,9 @@ OCaml AST in the OCaml syntax;
 @end itemize")
     (license license:expat)))
 
-(define-public ocaml-ppx-compare
+(define-public ocaml4.07-ppx-compare
   (package
-    (name "ocaml-ppx-compare")
+    (name "ocaml4.07-ppx-compare")
     (version "0.11.1")
     (source (origin
               (method git-fetch)
@@ -4114,9 +4176,13 @@ OCaml AST in the OCaml syntax;
                 "06bq4m1bsm4jlx4g7wh5m99qky7xm4c2g52kaz6pv25hdn5agi2m"))))
     (build-system dune-build-system)
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties `((upstream-name . "ppx_compare")))
     (home-page "https://github.com/janestreet/ppx_compare";)
     (synopsis "Generation of comparison functions from types")
@@ -4128,9 +4194,9 @@ flexibility by allowing you to override them for a 
specific type and more safety
 by making sure that you only compare comparable values.")
     (license license:asl2.0)))
 
-(define-public ocaml-fieldslib
+(define-public ocaml4.07-fieldslib
   (package
-    (name "ocaml-fieldslib")
+    (name "ocaml4.07-fieldslib")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4143,11 +4209,14 @@ by making sure that you only compare comparable 
values.")
     (build-system dune-build-system)
     (arguments
      ;; No tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "fieldslib")))
     (home-page "https://github.com/janestreet/fieldslib";)
     (synopsis "Syntax extension to record fields")
@@ -4156,9 +4225,9 @@ record fields, to get and set record fields, iterate and 
fold over all fields
 of a record and create new record values.")
     (license license:asl2.0)))
 
-(define-public ocaml-variantslib
+(define-public ocaml4.07-variantslib
   (package
-    (name "ocaml-variantslib")
+    (name "ocaml4.07-variantslib")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4171,11 +4240,14 @@ of a record and create new record values.")
     (build-system dune-build-system)
     (arguments
      ;; No tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "variantslib")))
     (home-page "https://github.com/janestreet/variantslib";)
     (synopsis "OCaml variants as first class values")
@@ -4183,9 +4255,9 @@ of a record and create new record values.")
 standard library.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-fields-conv
+(define-public ocaml4.07-ppx-fields-conv
   (package
-    (name "ocaml-ppx-fields-conv")
+    (name "ocaml4.07-ppx-fields-conv")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4197,10 +4269,14 @@ standard library.")
                 "07zrd3qky2ppbfl55gpm90rvqa5860xgwcsvihrjmkrw6d0jirkc"))))
     (build-system dune-build-system)
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-fieldslib" ,ocaml-fieldslib)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-fieldslib" ,ocaml4.07-fieldslib)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties `((upstream-name . "ppx_fields_conv")))
     (home-page "https://github.com/janestreet/ppx_fields_conv";)
     (synopsis "Generation of accessor and iteration functions for ocaml 
records")
@@ -4210,9 +4286,9 @@ and set record fields, iterate and fold over all fields 
of a record and create
 new record values.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-sexp-conv
+(define-public ocaml4.07-ppx-sexp-conv
   (package
-    (name "ocaml-ppx-sexp-conv")
+    (name "ocaml4.07-ppx-sexp-conv")
     (version "0.11.2")
     (source (origin
               (method git-fetch)
@@ -4225,9 +4301,13 @@ new record values.")
                 "0pqwnqy1xp309wvdcaax4lg02yk64lq2w03mbgfvf6ps5ry4gis9"))))
     (build-system dune-build-system)
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties `((upstream-name . "ppx_sexp_conv")))
     (home-page "https://github.com/janestreet/ppx_sexp_conv";)
     (synopsis "Generation of S-expression conversion functions from type 
definitions")
@@ -4235,9 +4315,9 @@ new record values.")
 definitions.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-variants-conv
+(define-public ocaml4.07-ppx-variants-conv
   (package
-    (name "ocaml-ppx-variants-conv")
+    (name "ocaml4.07-ppx-variants-conv")
     (version "0.11.1")
     (source (origin
               (method git-fetch)
@@ -4250,10 +4330,14 @@ definitions.")
                 "1yc0gsds5m2nv39zga8nnrca2n75rkqy5dz4xj1635ybz20hhbjd"))))
     (build-system dune-build-system)
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-variantslib" ,ocaml-variantslib)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-variantslib" ,ocaml4.07-variantslib)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties
       `((upstream-name . "ppx_variants_conv")))
     (home-page
@@ -4264,9 +4348,9 @@ definitions.")
 variant types.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-custom-printf
+(define-public ocaml4.07-ppx-custom-printf
   (package
-    (name "ocaml-ppx-custom-printf")
+    (name "ocaml4.07-ppx-custom-printf")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4278,10 +4362,14 @@ variant types.")
                 "11b73smf3g3bpd9lg014pr4rx285nk9mnk6g6464ph51jv0sqzhj"))))
     (build-system dune-build-system)
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties `((upstream-name . "ppx_custom_printf")))
     (home-page "https://github.com/janestreet/ppx_custom_printf";)
     (synopsis "Printf-style format-strings for user-defined string conversion")
@@ -4289,9 +4377,9 @@ variant types.")
 string conversion.")
     (license license:asl2.0)))
 
-(define-public ocaml-bin-prot
+(define-public ocaml4.07-bin-prot
   (package
-    (name "ocaml-bin-prot")
+    (name "ocaml4.07-bin-prot")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4303,13 +4391,17 @@ string conversion.")
                 "1rsd91gx36prj4whi76nsiz1bzpgal9nzyw3pxdz1alv4ilk2il6"))))
     (build-system dune-build-system)
     (inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-compare" ,ocaml-ppx-compare)
-        ("ocaml-ppx-custom-printf" ,ocaml-ppx-custom-printf)
-        ("ocaml-ppx-fields-conv" ,ocaml-ppx-fields-conv)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-ppx-variants-conv" ,ocaml-ppx-variants-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-compare" ,ocaml4.07-ppx-compare)
+        ("ocaml-ppx-custom-printf" ,ocaml4.07-ppx-custom-printf)
+        ("ocaml-ppx-fields-conv" ,ocaml4.07-ppx-fields-conv)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-ppx-variants-conv" ,ocaml4.07-ppx-variants-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties `((upstream-name . "bin_prot")))
     (home-page "https://github.com/janestreet/bin_prot";)
     (synopsis "Binary protocol generator")
@@ -4343,9 +4435,9 @@ storage of large amounts of data.")
     (description "Octavius is a library to parse the `ocamldoc` comment 
syntax.")
     (license license:isc)))
 
-(define-public ocaml-ppx-hash
+(define-public ocaml4.07-ppx-hash
   (package
-    (name "ocaml-ppx-hash")
+    (name "ocaml4.07-ppx-hash")
     (version "0.11.1")
     (source (origin
               (method git-fetch)
@@ -4358,11 +4450,15 @@ storage of large amounts of data.")
                 "1p0ic6aijxlrdggpmycj12q3cy9xksbq2vq727215maz4snvlf5p"))))
     (build-system dune-build-system)
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-compare" ,ocaml-ppx-compare)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-compare" ,ocaml4.07-ppx-compare)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties `((upstream-name . "ppx_hash")))
     (home-page "https://github.com/janestreet/ppx_hash";)
     (synopsis "Generation of hash functions from type expressions and 
definitions")
@@ -4370,9 +4466,9 @@ storage of large amounts of data.")
 hash functions from type exrpessions and definitions.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-enumerate
+(define-public ocaml4.07-ppx-enumerate
   (package
-    (name "ocaml-ppx-enumerate")
+    (name "ocaml4.07-ppx-enumerate")
     (version "0.11.1")
     (source (origin
               (method git-fetch)
@@ -4385,11 +4481,14 @@ hash functions from type exrpessions and definitions.")
                 "0spx9k1v7vjjb6sigbfs69yndgq76v114jhxvzjmffw7q989cyhr"))))
     (build-system dune-build-system)
     (arguments
-     `(#:tests? #f))                    ; no test suite
+     `(#:tests? #f; no test suite
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_enumerate")))
     (home-page "https://github.com/janestreet/ppx_enumerate";)
     (synopsis "Generate a list containing all values of a finite type")
@@ -4398,9 +4497,9 @@ for the list of all values of a type (for a type which 
only has finitely
 many values).")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-bench
+(define-public ocaml4.07-ppx-bench
   (package
-    (name "ocaml-ppx-bench")
+    (name "ocaml4.07-ppx-bench")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4413,20 +4512,23 @@ many values).")
     (build-system dune-build-system)
     (arguments
      ;; No tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-ppx-inline-test" ,ocaml-ppx-inline-test)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-ppx-inline-test" ,ocaml4.07-ppx-inline-test)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_bench")))
     (home-page "https://github.com/janestreet/ppx_bench";)
     (synopsis "Syntax extension for writing in-line benchmarks in ocaml code")
     (description "Syntax extension for writing in-line benchmarks in ocaml 
code.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-here
+(define-public ocaml4.07-ppx-here
   (package
-    (name "ocaml-ppx-here")
+    (name "ocaml4.07-ppx-here")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4439,11 +4541,14 @@ many values).")
     (build-system dune-build-system)
     (arguments
      ;; broken tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_here")))
     (home-page "https://github.com/janestreet/ppx_here";)
     (synopsis "Expands [%here] into its location")
@@ -4451,9 +4556,9 @@ many values).")
       "Part of the Jane Street's PPX rewriters collection.")
     (license license:asl2.0)))
 
-(define-public ocaml-typerep
+(define-public ocaml4.07-typerep
   (package
-    (name "ocaml-typerep")
+    (name "ocaml4.07-typerep")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4465,16 +4570,18 @@ many values).")
                 "1zi7hy0prpgzqhr4lkacr04wvlvbp21jfbdfvffhrm6cd400rb5v"))))
     (build-system dune-build-system)
     (arguments
-     `(#:tests? #f))
-    (propagated-inputs `(("ocaml-base" ,ocaml-base)))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
+    (propagated-inputs `(("ocaml-base" ,ocaml4.07-base)))
     (home-page "https://github.com/janestreet/typerep";)
     (synopsis "Typerep is a library for runtime types")
     (description "Typerep is a library for runtime types.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-sexp-value
+(define-public ocaml4.07-ppx-sexp-value
   (package
-    (name "ocaml-ppx-sexp-value")
+    (name "ocaml4.07-ppx-sexp-value")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4485,12 +4592,16 @@ many values).")
                (base32
                 "1xnalfrln6k5khsyxvxkg6v32q8fpr4cqamsjqfih29jdv486xrs"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-here" ,ocaml-ppx-here)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-here" ,ocaml4.07-ppx-here)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_sexp_value")))
     (home-page "https://github.com/janestreet/ppx_sexp_value";)
     (synopsis "Simplify building s-expressions from ocaml values")
@@ -4498,9 +4609,9 @@ many values).")
 ocaml values.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-sexp-message
+(define-public ocaml4.07-ppx-sexp-message
   (package
-    (name "ocaml-ppx-sexp-message")
+    (name "ocaml4.07-ppx-sexp-message")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4511,12 +4622,16 @@ ocaml values.")
                (base32
                 "1yh440za0w9cvrbxbmqacir8715kdaw6sw24ys9xj80av9nqpiw7"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-here" ,ocaml-ppx-here)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-here" ,ocaml4.07-ppx-here)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_sexp_message")))
     (home-page "https://github.com/janestreet/ppx_sexp_message";)
     (synopsis "A ppx rewriter for easy construction of s-expressions")
@@ -4526,9 +4641,9 @@ where one needs to construct a s-expression based on 
various element of the
 context such as function arguments.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-pipebang
+(define-public ocaml4.07-ppx-pipebang
   (package
-    (name "ocaml-ppx-pipebang")
+    (name "ocaml4.07-ppx-pipebang")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4541,10 +4656,13 @@ context such as function arguments.")
     (build-system dune-build-system)
     (arguments
      ;; No tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_pipebang")))
     (home-page "https://github.com/janestreet/ppx_pipebang";)
     (synopsis "Inline reverse application operators `|>` and `|!`")
@@ -4552,9 +4670,9 @@ context such as function arguments.")
 @code{|>} and @code{|!}.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-optional
+(define-public ocaml4.07-ppx-optional
   (package
-    (name "ocaml-ppx-optional")
+    (name "ocaml4.07-ppx-optional")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4567,11 +4685,14 @@ context such as function arguments.")
     (build-system dune-build-system)
     (arguments
      ;; No tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_optional")))
     (home-page "https://github.com/janestreet/ppx_optional";)
     (synopsis "Pattern matching on flat options")
@@ -4580,9 +4701,9 @@ context such as function arguments.")
 else expression.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-optcomp
+(define-public ocaml4.07-ppx-optcomp
   (package
-    (name "ocaml-ppx-optcomp")
+    (name "ocaml4.07-ppx-optcomp")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4593,10 +4714,13 @@ else expression.")
                (base32
                 "1bb52p2j2h4s9f06vrcpla80rj93jinnzq6jzilapyx9q068929i"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-stdio" ,ocaml-stdio)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-stdio" ,ocaml4.07-stdio)
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_optcomp")))
     (home-page "https://github.com/janestreet/ppx_optcomp";)
     (synopsis "Optional compilation for OCaml")
@@ -4605,9 +4729,9 @@ used to handle optional compilations of pieces of code 
depending of the word
 size, the version of the compiler, ...")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-let
+(define-public ocaml4.07-ppx-let
   (package
-    (name "ocaml-ppx-let")
+    (name "ocaml4.07-ppx-let")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4618,10 +4742,14 @@ size, the version of the compiler, ...")
                (base32
                 "1wdfw6w4xbg97a35yg6bif9gggxniy9ddnrjfw1a0inkl2yamxkj"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_let")))
     (home-page "https://github.com/janestreet/ppx_let";)
     (synopsis "Monadic let-bindings")
@@ -4629,9 +4757,9 @@ size, the version of the compiler, ...")
 match expressions, and if expressions.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-fail
+(define-public ocaml4.07-ppx-fail
   (package
-    (name "ocaml-ppx-fail")
+    (name "ocaml4.07-ppx-fail")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4642,11 +4770,15 @@ match expressions, and if expressions.")
                (base32
                 "07plqsvljiwvngggfypwq55g46s5my55y45mvlmalrxyppzr03s8"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-here" ,ocaml-ppx-here)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-here" ,ocaml4.07-ppx-here)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_fail")))
     (home-page "https://github.com/janestreet/ppx_fail";)
     (synopsis "Add location to calls to failwiths")
@@ -4654,9 +4786,9 @@ match expressions, and if expressions.")
 position.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-assert
+(define-public ocaml4.07-ppx-assert
   (package
-    (name "ocaml-ppx-assert")
+    (name "ocaml4.07-ppx-assert")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4667,13 +4799,17 @@ position.")
                (base32
                 "17kd311n0l9f72gblf9kv8i5rghr106w37x4f0m5qwh6nlgl0j9k"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-compare" ,ocaml-ppx-compare)
-        ("ocaml-ppx-here" ,ocaml-ppx-here)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-compare" ,ocaml4.07-ppx-compare)
+        ("ocaml-ppx-here" ,ocaml4.07-ppx-here)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_assert")))
     (home-page "https://github.com/janestreet/ppx_assert";)
     (synopsis "Assert-like extension nodes that raise useful errors on 
failure")
@@ -4681,9 +4817,9 @@ position.")
 useful errors on failure.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-expect
+(define-public ocaml4.07-ppx-expect
   (package
-    (name "ocaml-ppx-expect")
+    (name "ocaml4.07-ppx-expect")
     (version "0.12.0")
     (source (origin
               (method git-fetch)
@@ -4696,21 +4832,24 @@ useful errors on failure.")
                 "1wawsbjfkri4sw52n8xqrzihxc3xfpdicv3ahz83a1rsn4lb8j5q"))))
     (build-system dune-build-system)
     (arguments
-     `(#:jbuild? #t))
+     `(#:jbuild? #t
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-assert" ,ocaml-ppx-assert)
-        ("ocaml-ppx-compare" ,ocaml-ppx-compare)
-        ("ocaml-ppx-custom-printf" ,ocaml-ppx-custom-printf)
-        ("ocaml-ppx-fields-conv" ,ocaml-ppx-fields-conv)
-        ("ocaml-ppx-here" ,ocaml-ppx-here)
-        ("ocaml-ppx-inline-test" ,ocaml-ppx-inline-test)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-ppx-variants-conv" ,ocaml-ppx-variants-conv)
-        ("ocaml-stdio" ,ocaml-stdio)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)
-        ("ocaml-re" ,ocaml-re)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-assert" ,ocaml4.07-ppx-assert)
+        ("ocaml-ppx-compare" ,ocaml4.07-ppx-compare)
+        ("ocaml-ppx-custom-printf" ,ocaml4.07-ppx-custom-printf)
+        ("ocaml-ppx-fields-conv" ,ocaml4.07-ppx-fields-conv)
+        ("ocaml-ppx-here" ,ocaml4.07-ppx-here)
+        ("ocaml-ppx-inline-test" ,ocaml4.07-ppx-inline-test)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-ppx-variants-conv" ,ocaml4.07-ppx-variants-conv)
+        ("ocaml-stdio" ,ocaml4.07-stdio)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)
+        ("ocaml-re" ,(package-with-ocaml4.07 ocaml-re))))
     (properties `((upstream-name . "ppx_expect")))
     (home-page "https://github.com/janestreet/ppx_expect";)
     (synopsis "Cram like framework for OCaml")
@@ -4721,9 +4860,9 @@ output-generating code, interleaved with @code{%expect} 
extension expressions
 to denote the expected output.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-js-style
+(define-public ocaml4.07-ppx-js-style
   (package
-    (name "ocaml-ppx-js-style")
+    (name "ocaml4.07-ppx-js-style")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4736,12 +4875,15 @@ to denote the expected output.")
     (build-system dune-build-system)
     (arguments
      ;; No tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-octavius" ,ocaml-octavius)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-octavius" ,(package-with-ocaml4.07 ocaml-octavius))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_js_style")))
     (home-page "https://github.com/janestreet/ppx_js_style";)
     (synopsis "Code style checker for Jane Street Packages")
@@ -4750,9 +4892,9 @@ to denote the expected output.")
 packages.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-typerep-conv
+(define-public ocaml4.07-ppx-typerep-conv
   (package
-    (name "ocaml-ppx-typerep-conv")
+    (name "ocaml4.07-ppx-typerep-conv")
     (version "0.11.1")
     (source (origin
               (method git-fetch)
@@ -4765,12 +4907,15 @@ packages.")
                 "0a13dpfrrg0rsm8qni1bh7pqcda30l70z8r6yzi5a64bmwk7g5ah"))))
     (build-system dune-build-system)
     (arguments
-     `(#:test-target "."))
+     `(#:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-typerep" ,ocaml-typerep)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-typerep" ,ocaml4.07-typerep)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_typerep_conv")))
     (home-page "https://github.com/janestreet/ppx_typerep_conv";)
     (synopsis "Generation of runtime types from type declarations")
@@ -4778,9 +4923,9 @@ packages.")
 from type definitions.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-base
+(define-public ocaml4.07-ppx-base
   (package
-    (name "ocaml-ppx-base")
+    (name "ocaml4.07-ppx-base")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4792,15 +4937,18 @@ from type definitions.")
                 "0aq206pg330jmj7lhcagiiwm3a0b3gsqm801m8ajd4ysyw7idkym"))))
     (build-system dune-build-system)
     (arguments
-     `(#:test-target "."))
+     `(#:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-ppx-compare" ,ocaml-ppx-compare)
-        ("ocaml-ppx-enumerate" ,ocaml-ppx-enumerate)
-        ("ocaml-ppx-hash" ,ocaml-ppx-hash)
-        ("ocaml-ppx-js-style" ,ocaml-ppx-js-style)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-ppx-compare" ,ocaml4.07-ppx-compare)
+        ("ocaml-ppx-enumerate" ,ocaml4.07-ppx-enumerate)
+        ("ocaml-ppx-hash" ,ocaml4.07-ppx-hash)
+        ("ocaml-ppx-js-style" ,ocaml4.07-ppx-js-style)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_base")))
     (home-page "https://github.com/janestreet/ppx_base";)
     (synopsis "Base set of ppx rewriters")
@@ -4810,9 +4958,9 @@ Note that Base doesn't need ppx to build, it is only used 
as a
 verification tool.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-bin-prot
+(define-public ocaml4.07-ppx-bin-prot
   (package
-    (name "ocaml-ppx-bin-prot")
+    (name "ocaml4.07-ppx-bin-prot")
     (version "0.11.1")
     (source (origin
               (method git-fetch)
@@ -4826,13 +4974,16 @@ verification tool.")
     (build-system dune-build-system)
     (arguments
      ;; Cyclic dependency with ocaml-ppx-jane
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-bin-prot" ,ocaml-bin-prot)
-        ("ocaml-ppx-here" ,ocaml-ppx-here)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-bin-prot" ,ocaml4.07-bin-prot)
+        ("ocaml-ppx-here" ,ocaml4.07-ppx-here)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_bin_prot")))
     (home-page "https://github.com/janestreet/ppx_bin_prot";)
     (synopsis "Generation of bin_prot readers and writers from types")
@@ -4840,9 +4991,9 @@ verification tool.")
 functions from type definitions.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-jane
+(define-public ocaml4.07-ppx-jane
   (package
-    (name "ocaml-ppx-jane")
+    (name "ocaml4.07-ppx-jane")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4854,28 +5005,31 @@ functions from type definitions.")
                 "0lgppkw3aixrfnixihrsz2ipafv8fpvkdpy3pw8n0r615gg8x8la"))))
     (build-system dune-build-system)
     (arguments
-     `(#:test-target "."))
+     `(#:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-ppx-assert" ,ocaml-ppx-assert)
-        ("ocaml-ppx-base" ,ocaml-ppx-base)
-        ("ocaml-ppx-bench" ,ocaml-ppx-bench)
-        ("ocaml-ppx-bin-prot" ,ocaml-ppx-bin-prot)
-        ("ocaml-ppx-custom-printf" ,ocaml-ppx-custom-printf)
-        ("ocaml-ppx-expect" ,ocaml-ppx-expect)
-        ("ocaml-ppx-fail" ,ocaml-ppx-fail)
-        ("ocaml-ppx-fields-conv" ,ocaml-ppx-fields-conv)
-        ("ocaml-ppx-here" ,ocaml-ppx-here)
-        ("ocaml-ppx-inline-test" ,ocaml-ppx-inline-test)
-        ("ocaml-ppx-let" ,ocaml-ppx-let)
-        ("ocaml-ppx-optcomp" ,ocaml-ppx-optcomp)
-        ("ocaml-ppx-optional" ,ocaml-ppx-optional)
-        ("ocaml-ppx-pipebang" ,ocaml-ppx-pipebang)
-        ("ocaml-ppx-sexp-message" ,ocaml-ppx-sexp-message)
-        ("ocaml-ppx-sexp-value" ,ocaml-ppx-sexp-value)
-        ("ocaml-ppx-typerep-conv" ,ocaml-ppx-typerep-conv)
-        ("ocaml-ppx-variants-conv" ,ocaml-ppx-variants-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-ppx-assert" ,ocaml4.07-ppx-assert)
+        ("ocaml-ppx-base" ,ocaml4.07-ppx-base)
+        ("ocaml-ppx-bench" ,ocaml4.07-ppx-bench)
+        ("ocaml-ppx-bin-prot" ,ocaml4.07-ppx-bin-prot)
+        ("ocaml-ppx-custom-printf" ,ocaml4.07-ppx-custom-printf)
+        ("ocaml-ppx-expect" ,ocaml4.07-ppx-expect)
+        ("ocaml-ppx-fail" ,ocaml4.07-ppx-fail)
+        ("ocaml-ppx-fields-conv" ,ocaml4.07-ppx-fields-conv)
+        ("ocaml-ppx-here" ,ocaml4.07-ppx-here)
+        ("ocaml-ppx-inline-test" ,ocaml4.07-ppx-inline-test)
+        ("ocaml-ppx-let" ,ocaml4.07-ppx-let)
+        ("ocaml-ppx-optcomp" ,ocaml4.07-ppx-optcomp)
+        ("ocaml-ppx-optional" ,ocaml4.07-ppx-optional)
+        ("ocaml-ppx-pipebang" ,ocaml4.07-ppx-pipebang)
+        ("ocaml-ppx-sexp-message" ,ocaml4.07-ppx-sexp-message)
+        ("ocaml-ppx-sexp-value" ,ocaml4.07-ppx-sexp-value)
+        ("ocaml-ppx-typerep-conv" ,ocaml4.07-ppx-typerep-conv)
+        ("ocaml-ppx-variants-conv" ,ocaml4.07-ppx-variants-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_jane")))
     (home-page "https://github.com/janestreet/ppx_jane";)
     (synopsis "Standard Jane Street ppx rewriters")
@@ -4883,9 +5037,9 @@ functions from type definitions.")
 driver including all standard Jane Street ppx rewriters.")
     (license license:asl2.0)))
 
-(define-public ocaml-splittable-random
+(define-public ocaml4.07-splittable-random
   (package
-    (name "ocaml-splittable-random")
+    (name "ocaml4.07-splittable-random")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4896,10 +5050,14 @@ driver including all standard Jane Street ppx 
rewriters.")
                (base32
                 "0l1wbd881mymlnpzlq5q53mmdz3g5d7qjhyc7lfaq1x0iaccn5lc"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-jane" ,ocaml-ppx-jane)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-jane" ,ocaml4.07-ppx-jane)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))))
     (properties `((upstream-name . "splittable_random")))
     (home-page "https://github.com/janestreet/splittable_random";)
     (synopsis "PRNG that can be split into independent streams")
@@ -4933,9 +5091,9 @@ cryptographic-quality randomness in favor of 
performance.")
 various Jane Street packages.")
     (license license:asl2.0)))
 
-(define-public ocaml-configurator
+(define-public ocaml4.07-configurator
   (package
-    (name "ocaml-configurator")
+    (name "ocaml4.07-configurator")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4948,10 +5106,12 @@ various Jane Street packages.")
     (build-system dune-build-system)
     (arguments
      ;; No tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-stdio" ,ocaml-stdio)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-stdio" ,ocaml4.07-stdio)))
     (home-page "https://github.com/janestreet/configurator";)
     (synopsis "Helper library for gathering system configuration")
     (description "Configurator is a small library that helps writing OCaml
@@ -4967,9 +5127,9 @@ Configurator allows one to:
 @end itemize")
     (license license:asl2.0)))
 
-(define-public ocaml-spawn
+(define-public ocaml4.07-spawn
   (package
-    (name "ocaml-spawn")
+    (name "ocaml4.07-spawn")
     (version "0.13.0")
     (source (origin
               (method git-fetch)
@@ -4989,9 +5149,11 @@ Configurator allows one to:
              (substitute* "test/tests.ml"
                (("/bin/pwd") (which "pwd"))
                (("/bin/echo") (which "echo")))
-             #t)))))
+             #t)))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
-     `(("ocaml-ppx-expect" ,ocaml-ppx-expect)))
+     `(("ocaml-ppx-expect" ,ocaml4.07-ppx-expect)))
     (home-page "https://github.com/janestreet/spawn";)
     (synopsis "Spawning sub-processes")
     (description
@@ -5013,9 +5175,9 @@ thousands of times faster than fork.
 @end itemize")
     (license license:asl2.0)))
 
-(define-public ocaml-core
+(define-public ocaml4.07-core
   (package
-    (name "ocaml-core")
+    (name "ocaml4.07-core")
     (version "0.11.3")
     (source (origin
               (method git-fetch)
@@ -5030,18 +5192,21 @@ thousands of times faster than fork.
     (arguments
      `(#:jbuild? #t
        ;; Require a cyclic dependency: core_extended
-       #:tests? #f))
+       #:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-configurator" ,ocaml-configurator)
-        ("ocaml-core-kernel" ,ocaml-core-kernel)
-        ("ocaml-ppx-assert" ,ocaml-ppx-assert)
-        ("ocaml-ppx-jane" ,ocaml-ppx-jane)
-        ("ocaml-sexplib" ,ocaml-sexplib)
-        ("ocaml-spawn" ,ocaml-spawn)
-        ("ocaml-stdio" ,ocaml-stdio)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-configurator" ,ocaml4.07-configurator)
+        ("ocaml-core-kernel" ,ocaml4.07-core-kernel)
+        ("ocaml-ppx-assert" ,ocaml4.07-ppx-assert)
+        ("ocaml-ppx-jane" ,ocaml4.07-ppx-jane)
+        ("ocaml-sexplib" ,ocaml4.07-sexplib)
+        ("ocaml-spawn" ,ocaml4.07-spawn)
+        ("ocaml-stdio" ,ocaml4.07-stdio)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (home-page "https://github.com/janestreet/core";)
     (synopsis "Alternative to OCaml's standard library")
     (description "The Core suite of libraries is an alternative to OCaml's
@@ -5050,9 +5215,9 @@ standard library that was developed by Jane Street.")
     ;; by OCaml's license for consortium members (see THIRD-PARTY.txt).
     (license license:asl2.0)))
 
-(define-public ocaml-core-kernel
+(define-public ocaml4.07-core-kernel
   (package
-    (name "ocaml-core-kernel")
+    (name "ocaml4.07-core-kernel")
     (version "0.11.1")
     (source (origin
               (method git-fetch)
@@ -5066,26 +5231,30 @@ standard library that was developed by Jane Street.")
     (build-system dune-build-system)
     (arguments
      ;; Cyclic dependency with ocaml-core
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-bin-prot" ,ocaml-bin-prot)
-        ("ocaml-configurator" ,ocaml-configurator)
-        ("ocaml-fieldslib" ,ocaml-fieldslib)
-        ("ocaml-jane-street-headers" ,ocaml-jane-street-headers)
-        ("ocaml-ppx-assert" ,ocaml-ppx-assert)
-        ("ocaml-ppx-base" ,ocaml-ppx-base)
-        ("ocaml-ppx-hash" ,ocaml-ppx-hash)
-        ("ocaml-ppx-inline-test" ,ocaml-ppx-inline-test)
-        ("ocaml-ppx-jane" ,ocaml-ppx-jane)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-ppx-sexp-message" ,ocaml-ppx-sexp-message)
-        ("ocaml-sexplib" ,ocaml-sexplib)
-        ("ocaml-splittable-random" ,ocaml-splittable-random)
-        ("ocaml-stdio" ,ocaml-stdio)
-        ("ocaml-typerep" ,ocaml-typerep)
-        ("ocaml-variantslib" ,ocaml-variantslib)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-bin-prot" ,ocaml4.07-bin-prot)
+        ("ocaml-configurator" ,ocaml4.07-configurator)
+        ("ocaml-fieldslib" ,ocaml4.07-fieldslib)
+        ("ocaml-jane-street-headers"
+         ,(package-with-ocaml4.07 ocaml-jane-street-headers))
+        ("ocaml-ppx-assert" ,ocaml4.07-ppx-assert)
+        ("ocaml-ppx-base" ,ocaml4.07-ppx-base)
+        ("ocaml-ppx-hash" ,ocaml4.07-ppx-hash)
+        ("ocaml-ppx-inline-test" ,ocaml4.07-ppx-inline-test)
+        ("ocaml-ppx-jane" ,ocaml4.07-ppx-jane)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-ppx-sexp-message" ,ocaml4.07-ppx-sexp-message)
+        ("ocaml-sexplib" ,ocaml4.07-sexplib)
+        ("ocaml-splittable-random" ,ocaml4.07-splittable-random)
+        ("ocaml-stdio" ,ocaml4.07-stdio)
+        ("ocaml-typerep" ,ocaml4.07-typerep)
+        ("ocaml-variantslib" ,ocaml4.07-variantslib)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))))
     (properties `((upstream-name . "core_kernel")))
     (home-page "https://github.com/janestreet/core_kernel";)
     (synopsis "Portable standard library for OCaml")
@@ -5225,9 +5394,9 @@ Usage is simple - add package bisect_ppx when building 
tests, run your tests,
 then run the Bisect_ppx report tool on the generated visitation files.")
     (license license:mpl2.0)))
 
-(define-public ocaml-odoc
+(define-public ocaml4.07-odoc
   (package
-    (name "ocaml-odoc")
+    (name "ocaml4.07-odoc")
     (version "1.4.2")
     (source
      (origin
@@ -5239,20 +5408,24 @@ then run the Bisect_ppx report tool on the generated 
visitation files.")
        (sha256
         (base32 "0rvhx139jx6wmlfz355mja6mk03x4swq1xxvk5ky6jzhalq3cf5i"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib
+       #:dune ,ocaml4.07-dune))
     (inputs
-     `(("ocaml-alcotest" ,ocaml-alcotest)
-       ("ocaml-markup" ,ocaml-markup)
-       ("ocaml-sexplib" ,ocaml-sexplib)
-       ("ocaml-re" ,ocaml-re)
-       ("ocaml-uutf" ,ocaml-uutf)))
+     `(("ocaml-alcotest" ,(package-with-ocaml4.07 ocaml-alcotest))
+       ("ocaml-markup" ,(package-with-ocaml4.07 ocaml-markup))
+       ("ocaml-sexplib" ,ocaml4.07-sexplib)
+       ("ocaml-re" ,(package-with-ocaml4.07 ocaml-re))
+       ("ocaml-uutf" ,(package-with-ocaml4.07 ocaml-uutf))))
     (native-inputs
-     `(("ocaml-astring" ,ocaml-astring)
-       ("ocaml-cmdliner" ,ocaml-cmdliner)
-       ("ocaml-cppo" ,ocaml-cppo)
-       ("ocaml-fpath" ,ocaml-fpath)
-       ("ocaml-result" ,ocaml-result)
-       ("ocaml-tyxml" ,ocaml-tyxml)
-       ("ocaml-bisect-ppx" ,ocaml-bisect-ppx)))
+     `(("ocaml-astring" ,(package-with-ocaml4.07 ocaml-astring))
+       ("ocaml-cmdliner" ,(package-with-ocaml4.07 ocaml-cmdliner))
+       ("ocaml-cppo" ,(package-with-ocaml4.07 ocaml-cppo))
+       ("ocaml-fpath" ,(package-with-ocaml4.07 ocaml-fpath))
+       ("ocaml-result" ,(package-with-ocaml4.07 ocaml-result))
+       ("ocaml-tyxml" ,(package-with-ocaml4.07 ocaml-tyxml))
+       ("ocaml-bisect-ppx" ,(package-with-ocaml4.07 ocaml-bisect-ppx))))
     (home-page "https://github.com/ocaml/odoc";)
     (synopsis "OCaml documentation generator")
     (description "Odoc is a documentation generator for OCaml.  It reads
@@ -5264,9 +5437,9 @@ advantage over ocamldoc is an accurate cross-referencer, 
which handles the
 complexity of the OCaml module system.")
     (license license:isc)))
 
-(define-public ocaml-fftw3
+(define-public ocaml4.07-fftw3
   (package
-    (name "ocaml-fftw3")
+    (name "ocaml4.07-fftw3")
     (version "0.8.4")
     (source
      (origin
@@ -5281,13 +5454,16 @@ complexity of the OCaml module system.")
     (build-system dune-build-system)
     (arguments
      `(#:tests? #t
-       #:test-target "tests"))
+       #:test-target "tests"
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib
+       #:dune ,ocaml4.07-dune))
     (propagated-inputs
      `(("fftw" ,fftw)
        ("fftwf" ,fftwf)))
     (native-inputs
-     `(("ocaml-cppo" ,ocaml-cppo)
-       ("ocaml-lacaml" ,ocaml-lacaml)))
+     `(("ocaml-cppo" ,(package-with-ocaml4.07 ocaml-cppo))
+       ("ocaml-lacaml" ,ocaml4.07-lacaml)))
     (home-page
      "https://github.com/Chris00/fftw-ocaml";)
     (synopsis
@@ -5297,9 +5473,9 @@ complexity of the OCaml module system.")
 library FFTW.")
     (license license:lgpl2.1))) ; with static linking exception.
 
-(define-public ocaml-lacaml
+(define-public ocaml4.07-lacaml
   (package
-    (name "ocaml-lacaml")
+    (name "ocaml4.07-lacaml")
     (version "11.0.5")
     (source
      (origin
@@ -5313,12 +5489,15 @@ library FFTW.")
          "180yb79a3qgx067qcpm50q12hrimjygf06rgkzbish9d1zfm670c"))))
     (build-system dune-build-system)
     (arguments
-     `(#:tests? #f)) ; No test target.
+     `(#:tests? #f ; No test target.
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib
+       #:dune ,ocaml4.07-dune))
     (native-inputs
      `(("openblas" ,openblas)
        ("lapack" ,lapack)
-       ("ocaml-base" ,ocaml-base)
-       ("ocaml-stdio" ,ocaml-stdio)))
+       ("ocaml-base" ,ocaml4.07-base)
+       ("ocaml-stdio" ,ocaml4.07-stdio)))
     (home-page "https://mmottl.github.io/lacaml/";)
     (synopsis
      "OCaml-bindings to BLAS and LAPACK")



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