Hey there,
I totally got your issue but currently, Nessie sources only support Amazon S3 and S3-compatible storage. There’s no direct support for Google Cloud Storage (GCS) yet. However, you might be able to use GCS with Nessie by configuring it to emulate S3 behavior using its XML API. There hasn’t been any official announcement about GCS support in future releases, so keep an eye on updates.
I already tried using the XML API, doesn’t work, I get an error saying “Make sure that Nessie endpoint URL is valid.” using https://storage.googleapis.com/ as Nessie endpoint URL and my GCS HMAC keys as AWS Access Key and secret