[rpms/flatpak-runtime-config] f45: Add alternatives symlink trigger

[Yaakov Selkowitz <yselkowi@redhat.com>]

            A new commit has been pushed.

            Repo   : rpms/flatpak-runtime-config
            Branch : f45
            Commit : 4490560c84bcdf05320b4ac7079e870178c36535
            Author : Yaakov Selkowitz <yselkowi@redhat.com>
            Date   : 2024-03-04T21:00:05-05:00
            Stats  : +7/-0 in 1 file(s)
            URL    : https://src.fedoraproject.org/rpms/flatpak-runtime-config/c/4490560c84bcdf05320b4ac7079e870178c36535?branch=f45

            Log:
            Add alternatives symlink trigger

Alternatives-based symlinks work when building RPMs, but break in
flatpaks because /etc/alternatives is not writable.  Since flatpak
RPMs are only installed, not removed, this retargets such symlinks
to their intended destination.

---
diff --git a/flatpak-runtime-config.spec b/flatpak-runtime-config.spec
index 7000bde..ac6750b 100644
--- a/flatpak-runtime-config.spec
+++ b/flatpak-runtime-config.spec
@@ -22,6 +22,7 @@ License:        MIT
 BuildRequires:  python3
 BuildRequires:  python3-rpm-macros
 
+Requires:       findutils
 Requires:       fontpackages-filesystem
 
 %description
@@ -98,6 +99,11 @@ HOME=/root /usr/bin/fc-cache -s
 for d in `find /app/share/java -type d`; do mkdir -p /usr${d#/app}; done
 for f in `find /app/share/java ! -type d`; do ln -s $f /usr${f#/app}; done
 
+%transfiletriggerin -P 1 -- /app
+for l in `find /app -type l`; do \
+  case `readlink $l` in /etc/alternatives/*) ln -fns `readlink -f $l` $l ;; esac \
+done
+
 %files
 %dir %{_prefix}/cache
 %dir %{_prefix}/cache/fontconfig
@@ -111,6 +117,7 @@ for f in `find /app/share/java ! -type d`; do ln -s $f /usr${f#/app}; done
 * Fri Mar 01 2024 Yaakov Selkowitz <yselkowi@redhat.com> - 39-6
 - Add Java symlink trigger
 - Add /app-built X11 font directories to fontconfig path
+- Add alternatives symlink trigger
 
 * Fri Dec 15 2023 Yaakov Selkowitz <yselkowi@redhat.com> - 39-5
 - Add graphviz install trigger