Haskell-ide-engine: Fork ghc-mod from back when it was BSD3

[DemiMarie]

ghc-mod is currently an AGPL project. This means that HIE is not usable in proprietary software unless another backend is used. Furthermore, if HIE makes any changes that are based on AGPL ghc-mod code, then the license of ghc-mod may "infect" HIE.

The only solution is to fork ghc-mod from when it was under the BSD license, or at least have a fixed interface between HIE and the AGPL ghc-mod code that does not change.

[joehillen]

This means that HIE is not usable in proprietary software

I fail to see the problem.

[cocreature]

We are a small project and don’t have the resources to maintain part of ghc-mod ourselves. When someone steps up that can do this, we can debate this again, until then it won’t happen.