| Summary: | dev-haskell/cabal-1.24.2.0 with ghc-8.6.5: Ambiguous occurrence ‘<>’ | ||
|---|---|---|---|
| Product: | Gentoo Linux | Reporter: | Martin Bays <mbays> |
| Component: | Current packages | Assignee: | Gentoo's Haskell Language team <haskell> |
| Status: | CONFIRMED --- | ||
| Severity: | normal | CC: | jstein |
| Priority: | Normal | ||
| Version: | unspecified | ||
| Hardware: | x86 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Package list: | Runtime testing required: | --- | |
| Attachments: |
dev-haskell:cabal-1.24.2.0:20191123-100436.log
emerge-info |
||
Created attachment 597148 [details]
dev-haskell:cabal-1.24.2.0:20191123-100436.log
build log
Created attachment 597150 [details]
emerge-info
emerge --info
For ghc-8.6.5 we'll need to add cabal-2.4.01 from ::haskell overlay. |
After installing ghc-8.6.5, building cabal fails with the error: ``` Distribution/System.hs:186:39: error: Ambiguous occurrence ‘<>’ It could refer to either ‘Prelude.<>’, imported from ‘Prelude’ at Distribution/System.hs:19:8-26 (and originally defined in ‘GHC.Base’) or ‘Text.PrettyPrint.<>’, imported from ‘Text.PrettyPrint’ at Distribution/System.hs:51:26-29 (and originally defined in ‘Text.PrettyPrint.HughesPJ’) | 186 | disp (Platform arch os) = disp arch <> Disp.char '-' <> disp os | ^^ ``` (full build log attached)