remove rust-llvm depext for conf-rust-llvm in ubuntu

[zapashcanon]

rust-lld is provided by the rustc package which should provided by the dependency on conf-rust which depends on cargo

[zapashcanon]

I don't understand where does the error come from for Ubuntu:

[ERROR] Package conf-rust-llvm.1 depends on the unavailable system package 'rust-llvm'. You can use `--no-depexts' to attempt installation anyway.

Because I removed the depext on rust-llvm in this case. Is there something weird going on like the Debian packages being inherited on Ubuntu or something?

[mseri]

@zapashcanon do you know in which version of ubuntu it started being provided by the rustc package? I could not find it

[zapashcanon]

Why did you remove it on Debian? It should stay there, this package exists and is required in Debian.

Regarding Ubuntu, I'm not sure about the version (it seems it has always been there), but you can see rust-lld being provided by rustc here:

https://packages.ubuntu.com/search?searchon=contents&keywords=rust-lld&mode=exactfilename&suite=oracular&arch=any

Also, did you see my previous question? Why is the CI trying to install the rust-llvm depext in Ubuntu? It should not do it and I don't understand why it does.

[mseri]

I don’t see it being installed in the ci. It fails to find rust-lld

[zapashcanon]

Isn't it simply because you removed it from Debian? It was installing it in the beginning and I suspect something is going on between Debian and Ubuntu. Are packages specified for debian family installed on ubuntu?

[mseri]

Isn't it simply because you removed it from Debian? It was installing it in the beginning and I suspect something is going on between Debian and Ubuntu. Are packages specified for debian family installed on ubuntu?

I thought they would not, since the family filter is different

[zapashcanon]

Well, it seems it is now trying to install it again: https://opam.ci.ocaml.org/github/ocaml/opam-repository/commit/d29c58d5a87cd15d0a0834def4b71d5ce1592e70/variant/distributions,ubuntu-24.10-ocaml-5.3,conf-rust-llvm.1

[ERROR] Package conf-rust-llvm.1 depends on the unavailable system package 'rust-llvm'. You can use `--no-depexts' to attempt installation anyway.

Do you have any clue about why it does so?

EDIT: I tried changing os-family to os-distribution for Debian to see if it prevents the Ubuntu run to install it.

[mseri]

ubuntu seems to be still failing

[zapashcanon]

ubuntu seems to be still failing

Indeed, but at least it was not trying to install the rust-llvm package anymore. It seems that os-family = debian will actually be used by Ubuntu. So we should use os-distribution.

Now, I have to understand why rust-lld is not found when it should come with rustc on Ubuntu. I think adding rustc as a direct depext is a good first step, let's see how it goes.

[zapashcanon]

OK, there's something weird going on. Is there a Docker image I can run to get an environment that is the same as what is run on the CI (the Ubuntu one)? I had a quick look at the ocurrent/opam-repo-ci README but did not find anything

[mseri]

I am on mobile and cannot copy paste comfortably, but you can find the instruction to reproduce the environment on the top of the logs

[mseri]

Fedora and ubuntu still seem to have issues. Not sure how to proceed

[zapashcanon]

Yes, I made some progress locally, I'll get back to it soon.