RE: [commit: ghc] master: Stop attempting to "trim" data types in interface files (9a20e54)

| >      Stop attempting to "trim" data types in interface files
| >
| >      Without -O, we previously tried to make interface files smaller
| >      by not including the data constructors of data types.  But
| >      there are a lot of exceptions, notably when Template Haskell is
| >      involved or, more recently, DataKinds.
| >
| >      However Trac #7445 shows that even without TemplateHaskell, using
| >      the Data class and invoking Language.Haskell.TH.Quote.dataToExpQ
| >      is enough to require us to expose the data constructors.
| >
| >      So I've given up on this "optimisation" -- it's probably not
| >      important anyway.  Now I'm simply not attempting to trim off
| >      the data constructors.  The gain in simplicity is worth the
| >      modest cost in interface file growth, which is limited to the
| >      bits reqd to describe those data constructors.
| 
| That's a shame - it wasn't so much a reduction in interface file size we
| gained by doing this, but less recompilation.  Oh well...

Good point.  But still, it's just too painful I think

Simon