Build from private conda-forge mirror failing since v0.30.0

[chaumage]

I'm using rattler-build to package pure python libraries on a windows machine, with a private conda-forge mirror and no access to any other package index.
My command looks like:

rattler-build build --recipe ./recipe/recipe.yaml -c https://host/repository/py-conda-forge --output-dir ../build/

It worked perfectly until i updated to the latest version.
I tried all recent versions, I get the following error since version 0.30.0 (included):

Error:
  × Failed to resolve dependencies: Request failed after 3 retries
  ├─▶ Request failed after 3 retries
  ├─▶ error sending request for url (https://host/repository/py-conda-forge/win-64/repodata_shards.msgpack.zst)
  ├─▶ client error (Connect)
  ╰─▶ invalid peer certificate: UnknownIssuer

[wolfv]

Does the URL have a valid HTTPS certificate? Is there a difference with the URL indicated, and one that (probably) works like https://host/repository/py-conda-forge/win-64/repodata.json?

[wolfv]

Ie. could you share what curl-ing those two URLs returns?

[chaumage]

Not sure I understand all the technicalities here, but curl-ing those urls returns a 404 error. I think the urls have no valid HTTPS certificate, when using pixi I have to set tls-no-verify = true.

[wolfv]

Do you need to use -k or --insecure when using curl?

[chaumage]

Sorry I mistyped the command, now curl https://host/repository/py-conda-forge/ returns the list of all available packages, and no need for -k or --insecure