default: Set ETNA_MESA_DEBUG=nir in phosh service

This complements !270 to enable XWayland acceleration, as phoc
itself does not pick up variables set in profile.d.

debian/librem5-base-defaults.install

@@ -14,6 +14,9 @@ default/osk-wayland                  usr/bin/
 # librem5 specific environment variables
 default/profile.d/*.sh etc/profile.d/
 
+# librem5 specific phosh service configuration
+default/phosh/librem5.conf           lib/systemd/system/phosh.service.d/
+
 # Applications to hide form the menu
 default/hidden-apps/*.desktop usr/share/librem5/applications/
 

default/phosh/librem5.conf

+[Service]
+Environment=ETNA_MESA_DEBUG=nir