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gnu: gdm: Install a placeholder desktop entry. 

This fixes <https://bugs.gnu.org/35068>.

* gnu/packages/gnome.scm (gdm)[arguments]: Add a phase that installs a
placeholder desktop entry file.

Co-authored-by: Danny Milosavljevic <dannym@scratchpost.org>
This commit is contained in:
Timothy Sample 2019-04-26 13:45:36 -04:00
parent 8597aecb84
commit 8caa458953
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1 changed files with 24 additions and 0 deletions
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gnu/packages/gnome.scm
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@ -33,6 +33,7 @@
;;; Copyright © 2018 Vasile Dumitrascu <va511e@yahoo.com>
;;; Copyright © 2018 Björn Höfling <bjoern.hoefling@bjoernhoefling.de>
;;; Copyright © 2018, 2019 Timothy Sample <samplet@ngyro.com>
;;; Copyright © 2019 Danny Milosavljevic <dannym@scratchpost.org>
;;;
;;; This file is part of GNU Guix.
;;;
@ -5536,6 +5537,29 @@ libxml2.")
(string-append "\"" (assoc-ref inputs "gnome-session")
"/bin/gnome-session\"")))
#t))
;; GDM requires that there be at least one desktop entry
;; file. This phase installs a hidden one that simply
;; fails. This enables users to use GDM with a
;; '~/.xsession' script with no other desktop entry files.
;; See <https://bugs.gnu.org/35068>.
(add-after 'install 'install-placeholder-desktop-entry
(lambda* (#:key inputs outputs #:allow-other-keys)
(let* ((out (assoc-ref outputs "out"))
(sessions (string-append out "/share/gdm/BuiltInSessions"))
(fail (string-append sessions "/fail.desktop")))
(mkdir-p sessions)
(with-output-to-file fail
(lambda ()
(for-each
display
'("[Desktop Entry]\n"
"Encoding=UTF-8\n"
"Type=Application\n"
"Name=Fail\n"
"Comment=This session fails immediately.\n"
"NoDisplay=true\n"
"Exec=false\n"))))
#t)))
;; GDM needs GNOME Session to run these applications. We link
;; their autostart files in `share/gdm/greeter/autostart'
;; because GDM explicitly tells GNOME Session to look there.