[Git][ghc/ghc][wip/soulomoon/suggest-UnliftedNewtypes-unlifted-data-family-25593] Refine the note
Patrick (@soulomoon)
gitlab at gitlab.haskell.org
Thu Jan 9 17:45:03 UTC 2025
Patrick pushed to branch wip/soulomoon/suggest-UnliftedNewtypes-unlifted-data-family-25593 at Glasgow Haskell Compiler / GHC
Commits:
39515181 by Patrick at 2025-01-10T01:44:55+08:00
Refine the note
- - - - -
1 changed file:
- compiler/GHC/Tc/TyCl.hs
Changes:
=====================================
compiler/GHC/Tc/TyCl.hs
=====================================
@@ -2229,9 +2229,9 @@ DF0 Where these kinds come from:
with UnliftedNewtypes/UnliftedDatatypes, it defaults to newOpenTypeKind
for newtypes/datatypes, otherwise it defaults to liftedTypeKind.
This is checked or defaulted by the tc_kind_sig function within
- tcDataFamInstHeader. Defaulting can be tricky since it is guiding
- instantiation (Note [Defaulting result kind of newtype/data family instance]).
- See also DF3, below.
+ tcDataFamInstHeader. Defaulting can be tricky for some cases,
+ See Note [Defaulting result kind of newtype/data family instance].
+ See also DF3, below.
DF1 In a data/newtype instance, we treat the kind of the /data family/,
once instantiated, as the "master kind" for the representation
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/39515181ddeca204f32724eacb04ac822fdf0153
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/39515181ddeca204f32724eacb04ac822fdf0153
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