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<rekado>we’ve had a number of GWL releases last year. Finally something I don’t have to rush before the report :)

<civodul>yay!

<civodul>well done :-)

<civodul>there's no canonical blog post or article about GWL, right?

<civodul>something about The Vision

<rekado>true. Even the manual’s introduction is very light on why we’d even bother doing this.

<rekado>I only ever discussed this in my presentations at FOSDEM

<zimoun>rekado: I was invited a seminar back on December where I presented Guix. I had questions about GWL. Yeah!

<zimoun>A The Vision would be worth, IMHO. :-)

<PurpleSym1>Hm, is Guix’ channels.scm order sensitive? I’m getting different profiles with guix pull -C vs guix time-machine -C and the only difference is that guix describe reports a reversed order of channels.

<civodul>PurpleSym1: could you tell what the difference is between those profiles?

<civodul>as in "diff $P1/manifest $P2/manifest"

<PurpleSym1>civodul: Like `guix describe` the order of channels differes.

<PurpleSym1>That’s all.

<civodul>PurpleSym1: ok, that's not great, but normally inconsequential

<civodul>we could/should canonicalize channel order

<civodul>+ implement hard collision detection as in https://issues.guix.gnu.org/60782

<PurpleSym1>civodul: I’m trying to figure out how to ensure a given Guix profile in /gnu/store/…-profile matches a given channels.scm and using cached-channel-instance I have to reverse the channel list. That’s how I noticed.

<civodul>ok

<PurpleSym1>(When sharing projects we cache the Guix profile for speed and need to make sure it’s “genuine”.)

<PurpleSym1>Which is harder than thought, because it takes a full minute to build a profile and then it’s only cached for one user 😕

<civodul>yeah, always per-user

<civodul>if you use time-machine, you get caching for free though

<rekado>I noticed a little problem: “guix time-machine --commit=…” will still get all the channels but only set the ’guix channel to the specified commit

<rekado>(or at least it looked this way)

<rekado>I had to give it a channel file to make it only use the 'guix channel

<rekado>not sure if that’s intended behavior

<civodul>that's intended, but i see it can be confusing

<civodul>by any chance, did one of you fearless scientific hackers try to build gloo and pytorch with rocm?

<zimoun>civodul: No. “Machine learning” is becoming against my ecological principles. :-)

<civodul>heh, same for HPC

<civodul>another thing i dislike about machine learning is when it's used as a substitute for analytical solutions

<PurpleSym1>civodul: re channel order: Should I open an issue?

IRC channel logs

2023-01-13.log