Add a CI workflow to publish new releases after a tag is pushed

[Kobzol]

Context: rust-lang/infra-team#117

This repo has write access by t-compiler and t-compiler-contributors, and currently this workflow creates a release after a push of a tag or manually through workflow_dispatch. If we don't want to give right to publish to t-compiler-contributors, then we can remove the workflow_dispatch trigger, and create a branch protection to e.g. v-* tags that would only allow t-compiler to push.

Requires a new secret CARGO_REGISTRY_TOKEN to be added to the secrets of this repository, which has scoped access to publish rustc-demangle.

[Kobzol]

CC @jdno, could you please also add the token here? Thanks!

[jdno]

CARGO_REGISTRY_TOKEN has been added. 👍

[oli-obk]

This needs a rebase, but I think it's ready otherwise now that the token is there?

[Kobzol]

Oh. Hello! 😆 Yeah, I think we can merge this. We won't know if it works until we push a tag anyway. Rebased.

[tgross35]

No release-plz for the automatic tags and release PRs? 🙂

[Kobzol]

Would you say this crate is released often enough that it is worth it? But if we can just copy CI config from another repo and it will "just work", then sure, why not :)

[tgross35]

Would you say this crate is released often enough that it is worth it?

Not really, but also not for many of the crates I've added it to 😆 It's just kind of convenient that you don't need to touch the repo locally to do a release.

I've used this config almost everywhere though, if you want to pick it up https://github.com/rust-lang/cfg-if/blob/dbfd66354537a7d47d84c95ea28b9a6f169ba9d1/.github/workflows/publish.yaml

[Kobzol]

Yeah, seems better than messing with tags locally. Changed to release-plz.

[Kobzol]

Let's try it.

[Kobzol]

Hmm, it failed (https://github.com/rust-lang/rustc-demangle/actions/runs/15611624336/job/43973685924), because it tried to publish the native-c package. Is that also supposed to be published or should we ignore it?

[marcoieni]

it's not published on crates.io

If the maintainers don't want to publish it, you can set publish = false in https://github.com/rust-lang/rustc-demangle/blob/main/crates/native-c/Cargo.toml
Release-plz will ignore it 👍