Timelines on collection creation from non-GitHub packages?

As we make more a more use of spm we would love to have an internal package collection to go with it. Going through all the tools currently though it would seem that the only way to use the package-collection-generate tooling though is to use GitHub.

I suppose the alternative is to hand craft a collection or fork and make my own package-collection-generate tool. There was a PR to add GitLab support a while back but eventually it faded away with the advice that collection generation would be in spm soon. We don't use GitLab, but it's not very promising to put work into supporting our git server if the existing tooling is going away.

Are there any updates on the timeline for merging tools or allowing other git servers that can be shared?