abdolence / sbt-gcs-resolver   1.8.0

Apache License 2.0 GitHub

SBT plugin for Google Cloud Storage (GCS) and Google Artifact Registry with Coursier support

Scala versions: 2.12
sbt plugins: 1.0

SBT plugin for Google Cloud Storage (GCS) and Google Artifact Registry

Maven Central


  • Support for raw Google Cloud Storage buckets (gs://)
  • Support Google Artifact Registry (artifactregistry://)
  • Simple to use
  • Coursier support (sbt 1.3+)
  • Ability to configure Google Credentials using sbt settings

SBT versions support

sbt v1.4+ (I haven't tested this with previous versions)


Install the plugin

Add this to your project/plugins.sbt:

addSbtPlugin("org.latestbit" % "sbt-gcs-plugin" % "1.8.0")

GCS publishing

publishTo := Some("My GCS artifacts" at "gs://<your-bucket-name>")

GCS resolving

resolvers += "My GCS artifacts" at "gs://<your-bucket-name>"

Google Artifact Registry publishing

publishTo := Some("My private artifacts" at "artifactregistry://<your-artifact-registry-url>")

Google Artifact Registry resolving

resolvers += "My private artifacts" at "artifactregistry://<your-artifact-registry-url>"


Google Cloud credentials file configuration

Plugin tries to load Google Account in the following order:

  • Specified settings in sbt build
googleCredentialsFile := Some(new File("<your-account-file>"))
  • Looking for gcs-resolver-google-account.json in <user-home>/.sbt directory
  • Looking for the Access Token from the environment variable: GOOGLE_OAUTH_ACCESS_TOKEN
  • Default application credentials (gcloud settings) or environment variable:
export GOOGLE_APPLICATION_CREDENTIALS=<your-account-file>

If you see some errors such as The Application Default Credentials are not available. when you start sbt, that means there is no default credentials configured on your machine. You can use gcloud auth application-default login to fix it or specify path to your account file using environment variable GOOGLE_APPLICATION_CREDENTIALS.

Follow for details https://developers.google.com/accounts/docs/application-default-credentials.

Workload Identity Federation

The plugin supports Workload Identity Federation since it uses the official Google client for Java. The example how to use with GitHub Actions is:

    - name: Authenticate Google Cloud
    id: auth
    uses: google-github-actions/auth@v1
      workload_identity_provider: 'projects/${{ env.GCP_PROJECT_ID }}/locations/global/workloadIdentityPools/${{ env.GCP_IDENTITY_POOL }}/providers/${{ env.GCP_IDENTITY_POOL_PROVIDER }}'
      service_account: '${{ env.GCP_SA_NAME }}@${{ env.GCP_PROJECT }}.iam.gserviceaccount.com'
      access_token_lifetime: '240s'

Configure publish access level (GCS only):

gcsPublishFilePolicy := GcsPublishFilePolicy.InheritedFromBucket // Default

// If you really need to make some of the files available for everyone
gcsPublishFilePolicy := GcsPublishFilePolicy.PublicAccess 

For Google Artifact Registry please use gcloud/GCP console to manage security.


Apache Software License (ASL)


Abdulla Abdurakhmanov