[bug#39102] [PATCH v2 1/2] gnu: xdg-utils: Don't use propagated inputs.

[Jakub Kądziołka]

Sending a revision to the first patch after feedback on IRC. Changes:
 - Remove the `string-prefix? "PATH:"' hack, list the packages
   explicitly.
 - Use cute to make the code easier to read.

---
* gnu/packages/freedesktop.scm (xdg-utils)
  [propagated-inputs, inputs]: Add awk, coreutils, grep and sed, make
  the dependencies not propagated.
  [arguments](patch-hardcoded-paths): Move to after 'install to make
  wrap-program function correctly. Wrap the installed programs.
---
 gnu/packages/freedesktop.scm | 40 ++++++++++++++++++++++++++++--------
 1 file changed, 32 insertions(+), 8 deletions(-)

diff --git a/gnu/packages/freedesktop.scm b/gnu/packages/freedesktop.scm
index 7066685dee..9e1bf730d2 100644
--- a/gnu/packages/freedesktop.scm
+++ b/gnu/packages/freedesktop.scm
@@ -16,6 +16,7 @@
 ;;; Copyright © 2018 Stefan Stefanović <address@hidden>
 ;;; Copyright © 2019 Reza Alizadeh Majd <address@hidden>
 ;;; Copyright © 2019 Guillaume Le Vaillant <address@hidden>
+;;; Copyright © 2020 Jakub Kądziołka <address@hidden>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -47,6 +48,7 @@
   #:use-module (gnu packages acl)
   #:use-module (gnu packages admin)
   #:use-module (gnu packages autotools)
+  #:use-module (gnu packages base)
   #:use-module (gnu packages bash)
   #:use-module (gnu packages boost)
   #:use-module (gnu packages check)
@@ -55,6 +57,7 @@
   #:use-module (gnu packages disk)
   #:use-module (gnu packages docbook)
   #:use-module (gnu packages documentation)
+  #:use-module (gnu packages gawk)
   #:use-module (gnu packages gettext)
   #:use-module (gnu packages ghostscript)
   #:use-module (gnu packages gl)
@@ -107,20 +110,41 @@
        ("libxslt" ,libxslt)
        ("w3m" ,w3m)
        ("xmlto" ,xmlto)))
-    (propagated-inputs
-     `(("perl-file-mimeinfo" ,perl-file-mimeinfo) ; for mimeopen fallback
+    (inputs
+     `(("awk" ,gawk)
+       ("coreutils" ,coreutils)
+       ("grep" ,grep)
+       ("inetutils" ,inetutils) ; xdg-screensaver uses `hostname'
+       ("perl-file-mimeinfo" ,perl-file-mimeinfo) ; for mimeopen fallback
+       ("sed" ,sed)
        ("xprop" ,xprop) ; for Xfce detecting
        ("xset" ,xset))) ; for xdg-screensaver
     (arguments
      `(#:tests? #f   ; no check target
+       #:modules ((srfi srfi-26)
+                  (guix build utils)
+                  (guix build gnu-build-system))
        #:phases
        (modify-phases %standard-phases
-         (add-after 'unpack 'patch-hardcoded-paths
-           (lambda _
-             (substitute* "scripts/xdg-mime.in"
-               (("/usr/bin/file") (which "file")))
-             (substitute* "scripts/xdg-open.in"
-               (("/usr/bin/printf") (which "printf")))
+         (add-after 'install 'patch-hardcoded-paths
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (with-directory-excursion (string-append (assoc-ref outputs "out")
+                                                      "/bin")
+               (substitute* "xdg-mime"
+                 (("/usr/bin/file") (which "file")))
+               (substitute* "xdg-open"
+                 (("/usr/bin/printf") (which "printf")))
+               (let ((path-ext
+                       (map (cute string-append <> "/bin")
+                            (cons (assoc-ref outputs "out")
+                                  (map (cute assoc-ref inputs <>)
+                                       '("awk" "coreutils" "grep" "inetutils"
+                                         "perl-file-mimeinfo" "sed" "xprop"
+                                         "xset"))))))
+                 (for-each
+                   (cute wrap-program <>
+                        `("PATH" ":" prefix ,path-ext))
+                   (find-files "."))))
              #t))
          (add-before 'build 'locate-catalog-files
            (lambda* (#:key inputs #:allow-other-keys)
-- 
2.24.1