upgrade to gap 4.15

[Martin R]

I would like to upgrade sage to use gap 4.15, because of a bugfix there, which affects me - or more precisely, https://github.com/sagemath/sage/pull/40186, which I really really would like to get off my desk soon.

I forgot how to do this.  I would like to know the procedure both for conda and for the - hm, don't know what to call it, perhaps - meson install on ubuntu.

@saraedum, did you succeed in the end?

Best wishes,

Martin

[Antonio Rojas]

Conda is already upgraded to 4.15. To upgrade sage-the-distro, you need to bump the version in  build/pkgs/gap/package-version.txt
 and the checksums in  build/pkgs/gap/chcksums.ini, then check whether patches in  build/pkgs/gap/patches/
 and  build/pkgs/gap_packages/patches/
are still relevant or need to be updated/removed.

If your PR requires GAP 4.15 then you also need to bump the minimum required versions at https://github.com/sagemath/sage/blob/10.9.beta6/src/meson.build#L231 and https://github.com/sagemath/sage/blob/10.9.beta6/build/pkgs/gap/spkg-configure.m4#L5
 

[Martin R]

Oh.  So how do I upgrade my conda installation?  I tried to upgrade just gap, but that failed.

[Dima Pasechnik]

looks like this has GAP 4.15.1
<https://github.com/conda-forge/gap-feedstock>

[Dima Pasechnik]

I've opened https://github.com/sagemath/sage/issues/41653 - upgrade GAP to 4.15.1

If noone volunteers, I'll do this. Please indicate on #41653 that you work on it, so that there is no duplication

[Tobia...@gmx.de]

The conda env files already use v4.15.1 of gap: https://github.com/sagemath/sage/blob/7faa604a7c63b64b0e173682b98f31cbc52565c3/environment-3.12-linux.yml#L123-L124

So simply running `conda env update --file environment-3.12-linux.yml --name sage-dev` + ` pip install --no-build-isolation --editable .` should work (in case of compilation errors, one might need to also remove the build/cp312 folder and rerun the pip install command.