Great game, thanks for porting it!
The wrapper script installed at /usr/local/bin/fs2open has this line:
/usr/local/bin/fs2open $*
I think this is a mistake, it should call the binary at
/usr/local/share/fs2open/fs2open. It's already installed with
SUBST_CMD, so this will work:
--- files/fs2open.orig Sat Jan 13 21:58:51 2018
+++ files/fs2open Sat Jan 13 22:03:35 2018
@@ -8,4 +8,4 @@
print 'could not find directory ~/.local/share/fs2open'
exit 1
fi
-/usr/local/bin/fs2open $*
+${LOCALBASE}/share/fs2open/fs2open $*
