06/13: gnu: lightdm-gtk-greeter: Adjust default config file path.

[guix-commits]

apteryx pushed a commit to branch master
in repository guix.

commit 20c8fb042c0d1c2b96e1a84e37011fb3eecf6258
Author: Maxim Cournoyer <maxim.cournoyer@gmail.com>
AuthorDate: Tue Aug 9 01:05:29 2022 -0400

    gnu: lightdm-gtk-greeter: Adjust default config file path.
    
    * gnu/packages/display-managers.scm (lightdm-gtk-greeter)
    [phases]{customize-default-config-path}: New phase.
---
 gnu/packages/display-managers.scm | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/gnu/packages/display-managers.scm 
b/gnu/packages/display-managers.scm
index e8f7f68c46..6fbefafe7d 100644
--- a/gnu/packages/display-managers.scm
+++ b/gnu/packages/display-managers.scm
@@ -364,6 +364,14 @@ display manager which supports different greeters.")
 
       #:phases
       #~(modify-phases %standard-phases
+          (add-after 'unpack 'customize-default-config-path
+            (lambda _
+              (substitute* "src/Makefile.in"
+                ;; Have the default config directory sourced from
+                ;; /etc/lightdm/lightdm-gtk-greeter.conf, which is where the
+                ;; lightdm service writes it.
+                (("\\$\\(sysconfdir)/lightdm/lightdm-gtk-greeter.conf")
+                 "/etc/lightdm/lightdm-gtk-greeter.conf"))))
           (add-after 'install 'fix-.desktop-file
             (lambda* (#:key outputs #:allow-other-keys)
               (substitute* (search-input-file