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build: qt-utils: Refactor the code to filter XDG_DATA_DIRS.

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This partially reinstate the reverted
c5fd1b0bd3.

* guix/build/qt-utils.scm (variables-for-wrapping)[collect-sub-dirs]:
Add 'selectors' parameter and honor it.  Change caller to handle selectors.

Modified-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>
This commit is contained in:
Ludovic Courtès 2021-07-02 13:49:00 -04:00 committed by Maxim Cournoyer
parent 86c9f5a5fa
commit 20cf23e4f8
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1 changed files with 35 additions and 33 deletions
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68
guix/build/qt-utils.scm
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@ -2,6 +2,7 @@
;;; Copyright © 2016 David Craven <david@craven.ch>
;;; Copyright © 2019, 2020, 2021 Hartmut Goebel <h.goebel@crazy-compilers.com>
;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
;;; Copyright © 2021 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@ -36,40 +37,41 @@
;; contain any of the standard subdirectories.
(define (variables-for-wrapping base-directories output-directory)
(define (collect-sub-dirs base-directories subdirectory-spec)
(filter-map
(lambda (dir)
(match
subdirectory-spec
((subdir)
(and (directory-exists? (string-append dir subdir))
(string-append dir (car subdirectory-spec))))
((subdir children)
(and
(or
(and (string=? dir output-directory)
(directory-exists? (string-append dir subdir)))
(or-map
(lambda (kid) (directory-exists? (string-append dir subdir kid)))
children))
(string-append dir subdir)))))
base-directories))
(filter
(lambda (var-to-wrap) (not (null? (last var-to-wrap))))
(map
(match-lambda
((var kind . subdir-spec)
`(,var ,kind ,(collect-sub-dirs base-directories subdir-spec))))
(list
;; these shall match the search-path-specification for Qt and KDE
;; libraries
'("XDG_DATA_DIRS" suffix "/share" ("/applications" "/fonts"
"/icons" "/mime"))
'("XDG_CONFIG_DIRS" suffix "/etc/xdg")
'("QT_PLUGIN_PATH" prefix "/lib/qt5/plugins")
'("QML2_IMPORT_PATH" prefix "/lib/qt5/qml")))))
(define (collect-sub-dirs base-directories subdirectory selectors)
;; Append SUBDIRECTORY and each of BASE-DIRECTORIES, and return the subset
;; that exists and has at least one of the SELECTORS sub-directories,
;; unless SELECTORS is the empty list.
(filter-map (lambda (dir)
(let ((directory (string-append dir subdirectory)))
(and (directory-exists? directory)
(or (null? selectors)
(any (lambda (selector)
(directory-exists?
(string-append directory selector)))
selectors))
directory)))
base-directories))
(filter-map
(match-lambda
((variable type directory selectors ...)
(match (collect-sub-dirs base-directories directory selectors)
(()
#f)
(directories
`(,variable ,type ,directories)))))
;; These shall match the search-path-specification for Qt and KDE
;; libraries.
(list '("XDG_DATA_DIRS" suffix "/share"
;; These are "selectors": consider /share if and only if at least
;; one of these sub-directories exist. This avoids adding
;; irrelevant packages to XDG_DATA_DIRS just because they have a
;; /share sub-directory.
"/applications" "/cursors" "/fonts" "/icons" "/glib-2.0/schemas"
"/mime" "/sounds" "/themes" "/wallpapers")
'("XDG_CONFIG_DIRS" suffix "/etc/xdg")
'("QT_PLUGIN_PATH" prefix "/lib/qt5/plugins")
'("QML2_IMPORT_PATH" prefix "/lib/qt5/qml"))))
(define* (wrap-qt-program* program #:key inputs output-dir
qt-wrap-excluded-inputs)