Fix armv7 builds

[hasufell]

No description provided.

[hasufell]

@newhoggy cabal-cache seems to do nothing, but doesn't error either: https://github.com/haskell/ghcup-hs/actions/runs/3552070582/jobs/5967056739#step:5:17079

I checked the bucket, it's empty. CABAL_DIR is set to a custom location.

[hasufell]

It seems only the self hosted runner is able to use cabal-cache with backblaze S3. I wonder if github runners have this blocked?

[hasufell]

So with debug turned on I get

2022-11-27T03:01:48.7246401Z [Error] [tid: ThreadId 9][ServiceError] {
2022-11-27T03:01:48.7246691Z   service    = S3
2022-11-27T03:01:48.7246928Z   status     = 404 
2022-11-27T03:01:48.7247171Z   code       = 
2022-11-27T03:01:48.7247423Z   message    = Nothing
2022-11-27T03:01:48.7247784Z   request-id = Just da324536ddfccbd2

But cabal-cache does not error.

Additionally, this doesn't happen on our self hosted runner, only the github runners.

[newhoggy]

If downloading the cabal-cache does not error on 404 because that happens normally as well, for example using an uninitialised cache.

[newhoggy]

You could try using tmate to debug Github Actions https://github.com/mxschmitt/action-tmate