troubles with rust / cargo / blake3 on haiku OS

[ThomasWaldmann]

I am trying to add blake3 and it has some rust dependencies.

I could get all platforms working, except Haiku OS, see there:

• add blake3, blake2b is legacy #9643
• CI: https://github.com/borgbackup/borg/actions/runs/25876342869/job/76044614227?pr=9643

It seems it can't find cargo. Shouldn't that be in rust_bin package?

[ThomasWaldmann]

@mmuman @Begasus can you help, please?

[Begasus]

The command for cargo should be fine (from the CI failure):

~> cargo --version
cargo 1.94.1 (29ea6fb6a 2026-03-24)

Adding blake3 to the recipe here doesn't seem to have any effect, or failure not finding cargo (didn't add that to the recipe yet). How do I make sure it will be used during the build?

EDIT: does this use the blake3 rust crate? Because at this moment our blake3 package doesn't provide that (nor python module?).

[ThomasWaldmann]

I do not see the cargo version output in the CI log, but:

2026-05-14T18:00:11.5976260Z + cargo --version
2026-05-14T18:00:11.7288044Z ##[group]Tearing down VM
2026-05-14T18:00:11.7289214Z Syncing back files
2026-05-14T18:00:11.7307649Z [command]/usr/bin/rsync -auz user@cross_platform_actions_host:/boot/home/home/runner/work/ /home/runner/work
2026-05-14T18:00:12.0162571Z Terminating VM
2026-05-14T18:00:12.0179588Z [command]/usr/bin/sudo kill -s TERM 2358
2026-05-14T18:00:12.0260995Z kill: (2358): No such process
2026-05-14T18:00:12.0272298Z ##[endgroup]
2026-05-14T18:00:12.0295531Z ##[error]The process '/usr/bin/ssh' failed with exit code 4
2026-05-14T18:00:12.0603004Z ##[group]Run codecov/codecov-action@v6

So I am assuming cargo failed or is not there.

[ThomasWaldmann]

blake3 (package from pypi.org) is required by borgbackup's pyproject.toml, so it will be pulled and installed by that.

For the more popular platforms, that will fetch a binary wheel from pypi (no rust tools needed), but for the BSDs, omniOS and Haiku OS, there is no binary wheel, so it will build from source and need rust and build tools.

I only put that separate pip install command there to maybe get a more clear / better visible error output from a blake3-only install / build.

CI config: https://github.com/borgbackup/borg/pull/9643/changes#diff-b803fcb7f17ed9235f1e5cb1fcd2f5d3b2838429d4368ae4c57ce4436577f03f