do not set LD_LIBRARY_PATH and GSETTINGS_SCHEMA_DIR on flatpak builds

data/meson.build

@@ -55,6 +55,7 @@ zrythm_launcher_config.set ('LIBDIR', libdir)
 zrythm_launcher_config.set (
   'LD_LIBRARY_PATH_ENV',
   os_darwin ? 'DYLD_LIBRARY_PATH' : 'LD_LIBRARY_PATH')
+zrythm_launcher_config.set ('FLATPAK_BUILD', get_option ('for_flathub') ? '1' : '0')
 
 # install desktop file and launcher scripts
 if os_gnu or os_freebsd or os_darwin

data/zrythm_launch.in

@@ -17,10 +17,12 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with Zrythm.  If not, see <https://www.gnu.org/licenses/>.
 
-jack_path=$(dirname $(ldconfig -p | grep 'libjack.so ' | head -n 1 | cut -d ' ' -f 4))
-export @LD_LIBRARY_PATH_ENV@="@ZRYTHM_CARLA_LIBDIR@:@ZRYTHM_LIBDIR@:$jack_path:@LIBDIR@:$@LD_LIBRARY_PATH_ENV@"
+if [ "@FLATPAK_BUILD@" != "1" ]; then
+  jack_path=$(dirname $(ldconfig -p | grep 'libjack.so ' | head -n 1 | cut -d ' ' -f 4))
+  export @LD_LIBRARY_PATH_ENV@="@ZRYTHM_CARLA_LIBDIR@:@ZRYTHM_LIBDIR@:$jack_path:@LIBDIR@:$@LD_LIBRARY_PATH_ENV@"
 
-export GSETTINGS_SCHEMA_DIR=@SCHEMAS_DIR@
+  export GSETTINGS_SCHEMA_DIR=@SCHEMAS_DIR@
+fi
 
 # if not first run, set language so that pre-startup
 # output is localized to the user's choice instead