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- ;;; GNU Guix --- Functional package management for GNU
- ;;; Copyright © 2014 Federico Beffa <beffa@fbengineering.ch>
- ;;; 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.
- ;;;
- ;;; GNU Guix is free software; you can redistribute it and/or modify it
- ;;; under the terms of the GNU General Public License as published by
- ;;; the Free Software Foundation; either version 3 of the License, or (at
- ;;; your option) any later version.
- ;;;
- ;;; GNU Guix is distributed in the hope that it will be useful, but
- ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
- ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ;;; GNU General Public License for more details.
- ;;;
- ;;; You should have received a copy of the GNU General Public License
- ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
- (define-module (guix build glib-or-gtk-build-system)
- #:use-module ((guix build gnu-build-system) #:prefix gnu:)
- #:use-module (guix build utils)
- #:use-module (ice-9 match)
- #:use-module (ice-9 regex)
- #:use-module (ice-9 ftw)
- #: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:
- ;;
- ;; Builder-side code of the standard glib-or-gtk build procedure.
- ;;
- ;; Code:
- (define (subdirectory-exists? parent sub-directory)
- (directory-exists? (string-append parent sub-directory)))
- (define (directory-included? directory directories-list)
- "Is DIRECTORY included in DIRECTORIES-LIST?"
- (fold (lambda (s p) (or (string-ci=? s directory) p))
- #f directories-list))
- ;; We do not include $HOME/.guix-profile/gtk-v.0 (v=2 or 3) because we do not
- ;; want to mix gtk+-2 and gtk+-3 modules. See
- ;; https://developer.gnome.org/gtk3/stable/gtk-running.html
- (define (gtk-module-directories inputs)
- "Check for the existence of \"libdir/gtk-v.0\" in INPUTS. Return a list
- with all found directories."
- (let* ((version
- (cond
- ((string-match "gtk-4"
- (or (assoc-ref inputs "gtk")
- (assoc-ref inputs "source")
- ""))
- "4.0")
- ((string-match "gtk\\+-3"
- (or (assoc-ref inputs "gtk+")
- (assoc-ref inputs "source")
- ""))
- "3.0")
- ((string-match "gtk\\+-2"
- (or (assoc-ref inputs "gtk+")
- (assoc-ref inputs "source")
- ""))
- "2.0")
- (else
- "4.0"))) ; We default to version 4.0.
- (gtk-module
- (lambda (input prev)
- (let* ((in (match input
- ((_ . dir) dir)
- (_ "")))
- (libdir
- (string-append in "/lib/gtk-" version)))
- (if (and (directory-exists? libdir)
- (not (directory-included? libdir prev)))
- (cons libdir prev)
- prev)))))
- (fold gtk-module '() inputs)))
- ;; See
- ;; http://www.freedesktop.org/wiki/DesktopThemeSpec
- ;; http://freedesktop.org/wiki/Specifications/sound-theme-spec
- ;; http://freedesktop.org/wiki/Specifications/icon-theme-spec
- ;;
- ;; Currently desktop themes are not well supported and do not honor
- ;; XDG_DATA_DIRS. One example is evince which only looks for desktop themes
- ;; in $HOME/.themes (for backward compatibility) and in XDG_DATA_HOME (which
- ;; defaults to $HOME/.local/share). One way to handle these applications
- ;; appears to be by making $HOME/.themes a symlink to
- ;; $HOME/.guix-profile/share/themes.
- (define (data-directories inputs)
- "Check for the existence of \"$datadir/glib-2.0/schemas\" or XDG themes data
- in INPUTS. Return a list with all found directories."
- (define (data-directory input previous)
- (let* ((in (match input
- ((_ . dir) dir)
- (_ "")))
- (datadir (string-append in "/share")))
- (if (and (or (subdirectory-exists? datadir "/glib-2.0/schemas")
- (subdirectory-exists? datadir "/sounds")
- (subdirectory-exists? datadir "/themes")
- (subdirectory-exists? datadir "/cursors")
- (subdirectory-exists? datadir "/wallpapers")
- (subdirectory-exists? datadir "/icons")
- (subdirectory-exists? datadir "/mime")) ;shared-mime-info
- (not (directory-included? datadir previous)))
- (cons datadir previous)
- previous)))
- (fold data-directory '() inputs))
- ;; All GIO modules are expected to be installed in GLib's $libdir/gio/modules
- ;; directory. That directory has to include a file called giomodule.cache
- ;; listing all available modules. GIO can be made aware of modules in other
- ;; directories with the help of the environment variable GIO_EXTRA_MODULES.
- ;; The official GIO documentation states that this environment variable should
- ;; only be used for testing and not in a production environment. However, it
- ;; appears that there is no other way of specifying multiple modules
- ;; directories (NIXOS also does use this variable). See
- ;; https://developer.gnome.org/gio/stable/running-gio-apps.html
- (define (gio-module-directories inputs)
- "Check for the existence of \"$libdir/gio/modules\" in the INPUTS and
- returns a list with all found directories."
- (define (gio-module-directory input previous)
- (let* ((in (match input
- ((_ . dir) dir)
- (_ "")))
- (gio-mod-dir (string-append in "/lib/gio/modules")))
- (if (and (directory-exists? gio-mod-dir)
- (not (directory-included? gio-mod-dir previous)))
- (cons gio-mod-dir previous)
- previous)))
- (fold gio-module-directory '() inputs))
- (define* (wrap-all-programs #:key inputs outputs
- (glib-or-gtk-wrap-excluded-outputs '())
- #:allow-other-keys)
- "Implement phase \"glib-or-gtk-wrap\": look for GSettings schemas and
- gtk+-v.0 libraries and create wrappers with suitably set environment variables
- if found.
- Wrapping is not applied to outputs whose name is listed in
- GLIB-OR-GTK-WRAP-EXCLUDED-OUTPUTS. This is useful when an output is known not
- to contain any GLib or GTK+ binaries, and where wrapping would gratuitously
- add a dependency of that output on GLib and GTK+."
- ;; Do not require bash to be present in the package inputs
- ;; even when there is nothing to wrap.
- ;; Also, calculate (sh) only once to prevent some I/O.
- (define %sh (delay (search-input-file inputs "bin/bash")))
- (define (sh) (force %sh))
- (define handle-output
- (match-lambda
- ((output . directory)
- (unless (member output glib-or-gtk-wrap-excluded-outputs)
- (let* ((bindir (string-append directory "/bin"))
- (libexecdir (string-append directory "/libexec"))
- (bin-list (filter (negate wrapped-program?)
- (append (find-files bindir ".*")
- (find-files libexecdir ".*"))))
- (datadirs (data-directories
- (alist-cons output directory inputs)))
- (gtk-mod-dirs (gtk-module-directories
- (alist-cons output directory inputs)))
- (gio-mod-dirs (gio-module-directories
- (alist-cons output directory inputs)))
- (env-vars `(,@(if (not (null? datadirs))
- (list `("XDG_DATA_DIRS" ":" prefix ,datadirs))
- '())
- ,@(if (not (null? gtk-mod-dirs))
- (list `("GTK_PATH" ":" prefix ,gtk-mod-dirs))
- '())
- ,@(if (not (null? gio-mod-dirs))
- (list `("GIO_EXTRA_MODULES" ":"
- prefix ,gio-mod-dirs))
- '()))))
- (for-each (lambda (program)
- (apply wrap-program program #:sh (sh) env-vars))
- bin-list))))))
- (for-each handle-output outputs))
- (define* (compile-glib-schemas #:key outputs #:allow-other-keys)
- "Implement phase \"glib-or-gtk-compile-schemas\": compile \"glib\" schemas
- if needed."
- (for-each (match-lambda
- ((output . directory)
- (let ((schemasdir (string-append directory
- "/share/glib-2.0/schemas")))
- (when (and (directory-exists? schemasdir)
- (not (file-exists?
- (string-append schemasdir "/gschemas.compiled"))))
- (invoke "glib-compile-schemas" schemasdir)))))
- 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$")
- (delete-duplicates 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)))
- (define* (glib-or-gtk-build #:key inputs (phases %standard-phases)
- #:allow-other-keys #:rest args)
- "Build the given package, applying all of PHASES in order."
- (apply gnu:gnu-build #:inputs inputs #:phases phases args))
- ;;; glib-or-gtk-build-system.scm ends here
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