use a more recent sage

[fchapoton]

let us try with sage 10.4

[fchapoton]

@saraedum : could you please help ? Why is this still installing sage 9.7 ?

[edgarcosta]

We are the moment are running 10.4 on our servers, so 10.4 would be the ideal version

[fchapoton]

I tried 10.4 but it failed. Could it be some conflict of dependencies ?

[fchapoton]

I have no idea how to investigate further.

[fchapoton]

ok, I have made progress, but this may hurt the cacheing process

[roed314]

Thanks, that looked like a lot of work. Can you share why we need to set use-only-tar-bz2 to false?

[fchapoton]

I have now squashed all these experimental commits.

I have no clear idea why this use-only-tar-bz2 is preventing things to work. Maybe some package provides only a .conda archive ? I am definitely a conda newbie.

[fchapoton]

Should I try to pin an exact version of python ? if yes, which version ?

[roed314]

I'd say 3.10.12, since that's what's in use on both beta and production.

[edgarcosta]

I am not sure is worth to pin the python version. As we use whatever sage forces us.

[fchapoton]

So let's keep the python version floating.

I have found a discussion about the caching : conda-incubator/setup-miniconda#267

but the conclusions are not clear.

and see also embray/gappy#27

[roed314]

This looks good to me. @edgarcosta, do you agree?