[bug#58140] [PATCH 2/6] gnu: Add kaldi-for-vosk.

[Nicolas Graves]

* gnu/packages/machine-learning.scm (kaldi-for-vosk): New variable.
---
 gnu/packages/machine-learning.scm | 98 +++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)

diff --git a/gnu/packages/machine-learning.scm 
b/gnu/packages/machine-learning.scm
index 3ad907e0c9..9b2e01c102 100644
--- a/gnu/packages/machine-learning.scm
+++ b/gnu/packages/machine-learning.scm
@@ -1596,6 +1596,104 @@ (define-public kaldi
 written in C++.")
       (license license:asl2.0))))
 
+(define kaldi-for-vosk
+  (let* ((commit "6417ac1dece94783e80dfbac0148604685d27579")
+         (revision "0")
+         (openfst openfst-for-vosk))
+    (package
+      (inherit kaldi)
+      (name "kaldi")
+      (version (git-version "0" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/alphacep/kaldi";)
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32 "04xw2dpfvpla8skpk08azmgr9k97cd8hn83lj4l85q165gbzql4s"))))
+      (inputs
+       (list alsa-lib
+             ;; `(,gfortran "lib") ;; replaced by lapack
+             lapack
+             glib
+             gstreamer
+             jack-1
+             openblas
+             openfst
+             portaudio
+             python))
+      (arguments
+       (list
+        #:test-target "test"
+        #:make-flags ''("online2" "lm" "rnnlm")
+        #:phases
+        #~(modify-phases %standard-phases
+            (add-after 'unpack 'chdir
+              (lambda _ (chdir "src") #t))
+            (replace 'configure
+              (lambda* (#:key build system inputs outputs #:allow-other-keys)
+                (when (not (or (string-prefix? "x86_64" system)
+                               (string-prefix? "i686" system)))
+                  (substitute* "makefiles/linux_openblas.mk"
+                    (("-msse -msse2") "")))
+                (substitute* "makefiles/default_rules.mk"
+                  (("/bin/bash") (which "bash")))
+                (substitute* "Makefile"
+                  (("ext_depend: check_portaudio")
+                   "ext_depend:"))
+                (substitute* '("online/Makefile"
+                               "onlinebin/Makefile"
+                               "gst-plugin/Makefile")
+                  (("../../tools/portaudio/install")
+                   (assoc-ref inputs "portaudio")))
+                (substitute* "matrix/Makefile"     ;temporary test bypass
+                  (("matrix-lib-test sparse-matrix-test") ""))
+
+                ;; This `configure' script doesn't support variables passed as
+                ;; arguments, nor does it support "prefix".
+                (let ((out (assoc-ref outputs "out")))
+                  (substitute* "configure"
+                    (("check_for_slow_expf;") "")
+                    ;; This affects the RPATH and also serves as the 
installation
+                    ;; directory.
+                    (("KALDILIBDIR=`pwd`/lib")
+                     (string-append "KALDILIBDIR=" out "/lib"))
+                    (("OPENBLASROOT=\\\"\\$\\(rel2abs 
..\\/tools\\/OpenBLAS\\/install\\)\\\"")
+                     (string-append "OPENBLASROOT=\"" #$openblas "\""))
+                    (("-L\\$OPENBLASLIBDIR -l:libopenblas.a -l:libblas.a 
-l:liblapack.a -l:libf2c.a")
+                     (string-append "-L$OPENBLASLIBDIR -lopenblas "
+                                    "-L" #$lapack "/lib -lblas -llapack")))
+                  (mkdir-p out) ; must exist
+                  (setenv "CONFIG_SHELL" (which "bash"))
+                  (setenv "OPENFST_VER" #$(package-version openfst))
+                  (invoke "./configure"
+                          "--use-cuda=no"
+                          "--mathlib=OPENBLAS_CLAPACK"
+                          "--shared"
+                          (string-append "--fst-root=" #$openfst)))))
+            (add-after 'configure 'optimize-build
+                       (lambda _ (substitute* "kaldi.mk" ((" -O1") " -O3"))))
+            (replace 'install
+              (lambda* (#:key outputs #:allow-other-keys)
+                (let* ((out (assoc-ref outputs "out"))
+                       (inc (string-append out "/include"))
+                       (lib (string-append out "/lib")))
+                  (mkdir-p lib)
+                  ;; The build phase installed symlinks to the actual
+                  ;; libraries.  Install the actual targets.
+                  (for-each (lambda (file)
+                              (let ((target (readlink file)))
+                                (delete-file file)
+                                (install-file target lib)))
+                            (find-files lib "\\.so"))
+                  ;; Install headers
+                  (for-each (lambda (file)
+                              (let ((target-dir (string-append inc "/" 
(dirname file))))
+                                (install-file file target-dir)))
+                            (find-files "." "\\.h")))))))))))
+
 (define-public gst-kaldi-nnet2-online
   (let ((commit "cb227ef43b66a9835c14eb0ad39e08ee03c210ad")
         (revision "2"))
-- 
2.37.3