Setting `repository.credentials` makes Coursier/Metals hang (?)

[kubukoz]

Version(s)

1.4.0, from Nixpkgs.

Describe the bug

When I set repository.credentials, I'm unable to launch Metals. Actually, launching anything through Coursier fails.

To Reproduce

1. scala-cli --power config repositories.credentials example.com value:user value:pass
2. Open Metals
3. Look at Output panel

E.g. in vscode:

Alternatively, in step 2 run cs launch stc. It hangs, and when interrupted with ctrl+c it prints:

Warning: failed to read repositories credentials from /Users/kubukoz/Library/Application Support/ScalaCli/secrets/config.json, ignoring it.
Note that a cs command from coursier >= v2.1.0-M7-34-gf519b50a3 is recommended.

My coursier CLI is at 2.1.10, from Nixpkgs.

Interestingly, scala-cli actually uses the credentials just fine.

Expected behaviour

No impact of setting scala-cli credentials in Coursier/Metals.

[kubukoz]

it looks like it's indeed Coursier's problem not scala-cli's, but since ScalaCli shows up in the error + the problem is caused by a mutation from scala-cli, I figured I'd report here first - feel free to transfer if needed

[alexarchambault]

I can't check right now, but I highly suspect that originates from coursier failing to read config files, as its scala-cli config dependency isn't up to date (coursier/coursier#2933)

[kubukoz]

Why does Coursier depend on scala-cli config in the first place?

[alexarchambault]

To read the config too