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build-system/qt: Wrappers only include relevant directories to XDG_DATA_DIRS.

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Fixes <https://bugs.gnu.org/47569>.

Previously the wrapper's XDG_DATA_DIRS would contain any input that had
a /share sub-directory, which is usually all build-time inputs.

* guix/build/qt-build-system.scm (variables-for-wrapping)[collect-sub-dirs]:
Add 'selectors' parameter and honor it.  Change caller to handle
selectors.  Add selectors for /share.
This commit is contained in:
Ludovic Courtès 2021-04-08 22:17:03 +02:00
parent eb6ac483a5
commit c5fd1b0bd3
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1 changed files with 39 additions and 19 deletions
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58
guix/build/qt-build-system.scm
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@ -1,6 +1,6 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 Federico Beffa <beffa@fbengineering.ch>
;;; Copyright © 2014, 2015 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014, 2015, 2021 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2018 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2019, 2020 Hartmut Goebel <h.goebel@crazy-compilers.com>
;;;
@ -49,25 +49,45 @@ (define* (check-setup #:rest args)
(define (variables-for-wrapping base-directories)
(define (collect-sub-dirs base-directories subdirectory)
(filter-map
(lambda (dir)
(let ((directory (string-append dir subdirectory)))
(if (directory-exists? directory) directory #f)))
base-directories))
(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
(lambda (var-to-wrap) (not (null? (last var-to-wrap))))
(map
(lambda (var-spec)
`(,(first var-spec) = ,(collect-sub-dirs base-directories (last var-spec))))
(list
;; these shall match the search-path-specification for Qt and KDE
;; libraries
'("XDG_DATA_DIRS" "/share")
'("XDG_CONFIG_DIRS" "/etc/xdg")
'("QT_PLUGIN_PATH" "/lib/qt5/plugins")
'("QML2_IMPORT_PATH" "/lib/qt5/qml")))))
(filter-map
(match-lambda
((variable directory selectors ...)
(match (collect-sub-dirs base-directories directory
selectors)
(()
#f)
(directories
`(,variable = ,directories)))))
;; These shall match the search-path-specification for Qt and KDE
;; libraries.
(list '("XDG_DATA_DIRS" "/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.
"/glib-2.0/schemas" "/sounds" "/themes"
"/cursors" "/wallpapers" "/icons" "/mime")
'("XDG_CONFIG_DIRS" "/etc/xdg")
'("QT_PLUGIN_PATH" "/lib/qt5/plugins")
'("QML2_IMPORT_PATH" "/lib/qt5/qml"))))
(define* (wrap-all-programs #:key inputs outputs
(qt-wrap-excluded-outputs '())