free-5 doesn't build on old GHCs with transformers-0.4

[RyanGlScott]

free-5 doesn't build on old GHCs with transformers-0.4

[hvr]

@RyanGlScott are hackage revisions needed?

[RyanGlScott]

Maybe. But I can't possibly fathom what the revision would need to be, as this error was an obscure combination of transformers, base, and GHC.

In any case, this point is a bit moot now that free-5.0.1 has been released, which has the same version bounds as free-5 does.

[hvr]

@RyanGlScott unfortunately it isn't completely moot... nor does free-5.0.1 have the same bounds as free-5... and so I noticed install-plans where the solver was justified to backtrack into free-5 rather than free-5.0.1

So the way I understand it, the configuration that needs to be excluded is

• free == 5
• transformers == 0.4.*
• base < 4.8

?