@boegel I find it confusing that you add packages in __init__, even if they aren't included as sources, and then, if they are not in the sources, just ignore them. Wouldn't it be more clear (and cleaner) if setuptools (and possibly vsc-install and vsc-base, but I don't fully understand why you need them twice) is added to easybuild_pkgs if, and just if, it is listed in self.src?

@damianam I guess we could do that too, yeah. Do you want me to make that change now though? I'd like to avoid spending too much time on this now... Making changes to the EasyBuildMeta easyblock is a bit tricky, since it also affects the bootstrap script, etc.

W.r.t. vsc-base and vsc-install: this is only because those may be picked up from the OS, if a more recent vsc-base or vsc-install is available there. That mostly a concern for HPC-UGent/VSC systems, other systems most likely don't have these installed system-wide.

@boegel: "jain". Doing it now or later I think it doesn't matter. But I think it should be done. To fix #1090 and don't delay 3.1.0, I guess you can keep it as it is now, after all it doesn't affect the functionality, but open an issue with target 3.1.1 or 3.2.0 to don't forget about it later.

@damianam issue opened at #1095, thanks for the review!