From d8462c2b980eb8fc5eff3d97292bffea63a89ea9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miguel=20=C3=81ngel=20Arruga=20Vivas?=
 <rosen644835@gmail.com>
Date: Fri, 26 Apr 2019 11:56:43 +0200
Subject: [PATCH 3/4] gnu: grub: Add locale output.

* gnu/packages/bootloaders.scm (grub): Add new phase 'install-locale-folder
to generate new output used for bootloader localization.
---
 gnu/packages/bootloaders.scm | 33 +++++++++++++++++++++++++++++----
 1 file changed, 29 insertions(+), 4 deletions(-)

diff --git a/gnu/packages/bootloaders.scm b/gnu/packages/bootloaders.scm
index 6e6e69ff3b..71411ca954 100644
--- a/gnu/packages/bootloaders.scm
+++ b/gnu/packages/bootloaders.scm
@@ -94,7 +94,10 @@
                                       "grub-efi-fat-serial-number.patch"))))
     (build-system gnu-build-system)
     (arguments
-     `(#:phases (modify-phases %standard-phases
+     `(#:modules ((ice-9 ftw)
+                  (guix build utils)
+                  (guix build gnu-build-system))
+       #:phases (modify-phases %standard-phases
                   (add-after 'unpack 'patch-stuff
                    (lambda* (#:key inputs #:allow-other-keys)
                      (substitute* "grub-core/Makefile.in"
@@ -127,7 +130,30 @@
                       (substitute* "Makefile.in"
                         (("grub_cmd_date grub_cmd_set_date grub_cmd_sleep")
                           "grub_cmd_date grub_cmd_sleep"))
-                      #t)))
+                      #t))
+                  (add-after 'install 'install-locale-folder
+                    (lambda* (#:key outputs #:allow-other-keys)
+                      ;; XXX: Better checks are needed here
+                      (define (lang? file)
+                        (not (or (string=? file ".") (string=? file ".."))))
+                      (define (make-lang-installer to)
+                        (lambda (in-file stat flag)
+                          (if (eq? flag 'regular)
+                              (copy-file in-file to)
+                              #t)))
+
+                      (let* ((out (assoc-ref outputs "out"))
+                             (locale (string-append out "/share/locale"))
+                             (langs (scandir locale lang?))
+                             (locale-out (assoc-ref outputs "locale")))
+                        (mkdir-p locale-out)
+                        (for-each (lambda (lang)
+                                    (let ((from (string-append locale "/" lang))
+                                          (to (string-append locale-out "/"
+                                                             lang ".mo")))
+                                      (ftw from (make-lang-installer to))))
+                                  langs)
+                        #t))))
        ;; Disable tests on ARM and AARCH64 platforms.
        #:tests? ,(not (any (cute string-prefix? <> (or (%current-target-system)
                                                        (%current-system)))
@@ -183,6 +209,7 @@
        ("parted" ,parted)
        ("qemu" ,qemu-minimal-2.10)
        ("xorriso" ,xorriso)))
+    (outputs '("out" "locale"))
     (home-page "https://www.gnu.org/software/grub/")
     (synopsis "GRand Unified Boot loader")
     (description
@@ -249,8 +276,6 @@ menu to select one of the installed operating systems.")
        ,@(package-inputs grub-efi)))
     (arguments
      (substitute-keyword-arguments (package-arguments grub-efi)
-       ((#:modules modules `((guix build utils) (guix build gnu-build-system)))
-        `((ice-9 ftw) ,@modules))
        ((#:phases phases)
         `(modify-phases ,phases
            (add-after 'install 'install-non-efi
-- 
2.21.0