Hi Ben, sorry about the late response. It looks like you've found https://gitlab.haskell.org/ghc/ghc/-/issues/10871 which I think pretty comprehensively discusses the issue as it is. Given the elapsed time it would probably make sense to reimplement from scratch; I don't recall this being too difficult to do. HAs anything else come up in the meantime? Edward Excerpts from Ben Gamari's message of 2020-10-20 12:06:03 -0400:
Hi Edward,
While chatting with the ghc-ide folks recently I realized that it would be useful to be able to preserve Core such that compilation can be restarted (e.g. to be pushed down the bytecode pipeline to evaluate TH splices).
As I recall this is precisely what you implemented in your "fat interface file" work. Do you recall what the state of this work was? Do you have a branch with last-known-good work? Do you recall any tricky questions that remained outstanding?
Cheers,
- Ben