Backpack - TH+indefinite module interface file error
I've been stuck on this for a while now. There's a weird interaction between the Template Haskell pragma and indefinite modules. When Template Haskell is enabled in this particular file (but TH features aren't used) I get an interface error. When I remove the pragma, the project successfully compiles.
I hope I haven't made some trivial .cabal blunder.
Anyway, I'm interested in potentially trying to fix this, but I've been digging around in GHC for a couple of days and figured it was time to ask for help.