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build: glib-or-gtk: Generate the gdk-pixbuf-loaders cache file in a phase.

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Adding a profile hook to do so covers most use cases, but it is still
necessary to have the gdk-pixbuf loaders cache file computed at build time, as
software may expect to find loaders support at that time.

* guix/build/glib-or-gtk-build-system.scm: Delete trailing #t.
(%gdk-pixbuf-loaders-cache-file-prefix): New variable.
(generate-gdk-pixbuf-loaders-cache): New procedure.
(generate-gdk-pixbuf-loaders-cache-file): Add procedure...
(%standard-phases): ... and register it as a build phase.
This commit is contained in:
Maxim Cournoyer 2021-10-03 00:25:36 -04:00
parent 7541598fe2
commit e0d9c37982
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GPG key ID: 1260E46482E63562
2 changed files with 57 additions and 5 deletions
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5
guix/build-system/glib-or-gtk.scm
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@ -26,6 +26,8 @@
#:use-module (guix monads)
#:use-module (guix derivations)
#:use-module (guix search-paths)
#:use-module ((guix build glib-or-gtk-build-system)
#:select (%gdk-pixbuf-loaders-cache-file))
#:use-module (guix build-system)
#:use-module (guix build-system gnu)
#:use-module (guix packages)
@ -33,7 +35,8 @@
#:export (%glib-or-gtk-build-system-modules
glib-or-gtk-build
glib-or-gtk-cross-build
glib-or-gtk-build-system))
glib-or-gtk-build-system)
#:re-export (%gdk-pixbuf-loaders-cache-file)) ;for convenience
;; Commentary:
;;

57
guix/build/glib-or-gtk-build-system.scm
View file

@ -3,6 +3,7 @@
;;; Copyright © 2014, 2015 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2018 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2021 Maxime Devos <maximedevos@telenet.be>
;;; Copyright © 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
@ -28,6 +29,8 @@
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:export (%standard-phases
%gdk-pixbuf-loaders-cache-file
generate-gdk-pixbuf-loaders-cache
glib-or-gtk-build))
;; Commentary:
@ -183,8 +186,7 @@ add a dependency of that output on GLib and GTK+."
(apply wrap-program program #:sh (sh) env-vars))
bin-list))))))
(for-each handle-output outputs)
#t)
(for-each handle-output outputs))
(define* (compile-glib-schemas #:key outputs #:allow-other-keys)
"Implement phase \"glib-or-gtk-compile-schemas\": compile \"glib\" schemas
@ -197,11 +199,58 @@ if needed."
(not (file-exists?
(string-append schemasdir "/gschemas.compiled"))))
(invoke "glib-compile-schemas" schemasdir)))))
outputs)
#t)
outputs))
;; This file is to be generated by the
;; `generate-gdk-pixbuf-loaders-cache' build phase defined below.
(define %gdk-pixbuf-loaders-cache-file
"lib/gdk-pixbuf-2.0/2.10.0/loaders.cache")
(define (generate-gdk-pixbuf-loaders-cache directories outputs)
"Generate the loaders.cache file used by gdk-pixbuf to locate the available
loaders among DIRECTORIES, and set the GDK_PIXBUF_MODULE_FILE environment
variable. The cache file is installed under OUTPUTS. Return the first cache
file name if one was created else #f."
(let* ((loaders (append-map
(cut find-files <> "^libpixbufloader-.*\\.so$")
directories))
(outputs* (map (cut string-append <> "/"
%gdk-pixbuf-loaders-cache-file)
outputs))
(loaders.cache (first outputs*))
(loaders.cache-copies (cdr outputs*)))
(if (not (null? loaders))
(begin
(mkdir-p (dirname loaders.cache))
(setenv "GDK_PIXBUF_MODULE_FILE" loaders.cache)
(apply invoke "gdk-pixbuf-query-loaders" "--update-cache" loaders)
(for-each (lambda (f)
(mkdir-p (dirname f))
(copy-file loaders.cache f))
loaders.cache-copies)
loaders.cache)
#f)))
(define* (generate-gdk-pixbuf-loaders-cache-file #:key inputs outputs
#:allow-other-keys)
"Build phase that Wraps the GENERATE-GDK-PIXBUF-LOADERS-CACHE procedure."
;; Conditionally compute the cache file if the gdk-pixbuf command is
;; available on PATH (it comes with gdk-pixbuf).
(when (which "gdk-pixbuf-query-loaders")
(let ((loaders.cache (generate-gdk-pixbuf-loaders-cache
(map cdr inputs)
(filter-map identity
(list
(assoc-ref outputs "out")
(assoc-ref outputs "bin")
(assoc-ref outputs "lib"))))))
(when loaders.cache
(format #t "GDK_PIXBUF_MODULE_FILE set to `~a'~%" loaders.cache)))))
(define %standard-phases
(modify-phases gnu:%standard-phases
(add-after 'unpack 'generate-gdk-pixbuf-loaders-cache-file
generate-gdk-pixbuf-loaders-cache-file)
(add-after 'install 'glib-or-gtk-compile-schemas compile-glib-schemas)
(add-after 'install 'glib-or-gtk-wrap wrap-all-programs)))