New SDF3 files are not being recognized until a build is triggered about spoofax-pie

[molenzwiebel]

This also seems to happen with stx and str2 files.

[Gohla]

This is currently intended. All the Configure tasks for meta-languages are only triggered when building, as these tasks run compilers from other languages (e.g., to configure Stratego we first compile all SDF3 files to Stratego signatures, etc.) and are thus too expensive to run interactively. These configure tasks also set up the main source directory and file, and thus changing the main source directory/file is only observable after a build.

But this behavior is indeed confusing, and maybe it should be changed. I don't see an easy solution at the moment but will keep it in the back of my head.

[Gohla]

This has been fixed in d0c58cc.

Most other configuration changes still only get processed after building, but that is intended.