Build fails in conjunction with ghc-9.6 and latest stackage nightly
Closed this issue · 2 comments
alaendle commented
Build fails in conjunction with ghc-9.6 and latest stackage nightly:
/var/stackage/work/unpack-dir/unpacked/config-ini-0.2.5.0-a2138799480e166f8d7ee42bdfa2812de20508451c5bc39d9228443bec79c879/test/ini-compat/Main.hs:85:30: error: [GHC-39999]
• Ambiguous type variable ‘f0’ arising from a use of ‘Gen.element’
prevents the constraint ‘(Foldable f0)’ from being solved.
Probable fix: use a type annotation to specify what ‘f0’ should be.
Potentially matching instances:
instance Foldable (Either a) -- Defined in ‘Data.Foldable’
instance Foldable Seq.Seq -- Defined in ‘Data.Sequence.Internal’
...plus 7 others
...plus 47 instances involving out-of-scope types
(use -fprint-potential-instances to see them all)
• In the second argument of ‘(<$>)’, namely ‘Gen.element ";#"’
In the first argument of ‘(<*>)’, namely
‘I2.CommentLine <$> Gen.element ";#"’
In the expression:
I2.CommentLine <$> Gen.element ";#" <*> textChunk
|
85 | I2.CommentLine <$> Gen.element ";#" <*> textChunk
aisamanra commented
This should be fixed! I've also cut version 0.2.6.0 which incorporates these fixes.
alaendle commented
Many thanks! Package should reappear in stackage nightly shortly.