[IvarTJ]

I personally don't see having the version in the package address particularly more nasty than specifying it in the project file, as in Maven, which I have been dealing with lately. One problem I imagine is that when migrating to a new version of a library, the address has to be updated in each file the library is used in, with potentially catastrophic consequences if any one file is forgotten. A grep seems wise in that case.

Would you argue that there are more robust solutions in the Haskell ecosystem? What scheme do you prefer?

[drakenot]

I don't think the issue was with specifying the version in the package address. It is that you need to use a 3rd party, remote service, to redirect your requests to the appropriate git repo and branch.

This is because Go doesn't support specifying branches/tags itself when specifying a git dependency.

This workaround is contingent on gopkg.in people keeping their service maintained and running. If they went down, all your dependencies would break.