Add required gsettings schema to fix issue #58

Add gnome-settings-daemon-common which includes the antialiasing key
from the org.gnome.settings-daemon.plugins.xsettings schema and compile
this during the build and finally ensure we add this path to XDG_DATA_DIRS
so it can be found at runtime to fix crash when running pgtk on newer
Ubuntu releases under Wayland.

Signed-off-by: Alex Murray <[email protected]>

setup-env

@@ -48,6 +48,10 @@ if [ -f "$SNAP/usr/lib/$ARCH/libgtk-3-0/gtk-query-immodules-3.0" ]; then
   "$SNAP/usr/lib/$ARCH/libgtk-3-0/gtk-query-immodules-3.0" "$SNAP/usr/lib/$ARCH/gtk-3.0/3.0.0/immodules/"im-*.so > "$GTK_IM_MODULE_FILE"
 fi
 
+# Set XDG_DATA_DIRS so that we prefer the snap's and then the
+# the hosts gsettings schemas
+export XDG_DATA_DIRS="$SNAP/usr/share:$XDG_DATA_DIRS"
+
 # native comp needs to find as etc and this comes from within the snap
 # itself
 export PATH="$PATH:/snap/emacs/current/usr/bin"

snapcraft.yaml

@@ -112,6 +112,7 @@ parts:
     stage-packages:
       - gcc-10 # for tree-sitter
       - g++-10 # for tree-sitter
+      - gnome-settings-daemon-common # for antialiasing gsetting
       - gvfs
       - ibus-gtk3
       - libasound2
@@ -246,6 +247,7 @@ parts:
     override-prime: |
       set -eu
       snapcraftctl prime
+      glib-compile-schemas $SNAPCRAFT_PRIME/usr/share/glib-2.0/schemas/
       # Fix-up application icon lookup
       sed -i -e 's|^Icon=.*|Icon=usr/share/icons/hicolor/scalable/apps/emacs.svg|g' usr/share/applications/emacs*.desktop
       # also fixup emacsclient.desktop file since snapd replaces the Exec= line