On attempting to migrate `gitlab_projects` to the framework plugin, I discovered it could only be achieved with a breaking change. Terraform attribute names must start with a letter. This datasource has an attribute called `_links`, which needs to be renamed as part of the migration. I pushed up what I had done so far until I discovered the breaking change into a closed draft MR: https://gitlab.com/gitlab-org/terraform-provider-gitlab/-/merge_requests/2742 This is a massive datasource, so even though this will be somewhat out of date by 19.0, it should hopefully help as a starting point.