Do you have any examples of such projects, I've never seen any
complaints about ghc-mod doing this.
I haven't used ghc-mod enough to have a crash happen to me. I couldn't get it to work the times I'd tried it and others make this complaint. Whereas GHCi works for everyone!
Sounds awesome I'd love to get in on this :)
Herbert doesn't have time to hack on it, but was encouraging about continuing with ghci-ng. I'm thinking to try forward-porting ghci-ng to GHC 7.8, or otherwise extracting GHC 7.8's GHCi again and then backporting it to 7.6. (Under the assumption that current + past is a reasonable number of GHCs to support.) I'm going to experiment with the JSON interface and I'll report back with results.