dumpVar: only available in dev mode
They currently use an invalid dependency specification which makes any attempt to install it fail. Until they fix this, I'll have to divert to a fork.
Their dependency definition ends up requiring a SSH clone, which pip fails to do.
It seems that Renovate assumes Git tags for these kind of definitions, and therefore cannot handle commit refs. So a custom regex manager is needed, with a way to manually specify the branch to use, thanks to the `master` vs `main` split.