You can always set fixity of (:), with no effect
This works in a normal file
infixl 5 :or in ghci
$ ghci
GHCi, version 8.5.20180314: http://www.haskell.org/ghc/ :? for help
Prelude> infixr 5 :
Prelude> and has no effect
Trac metadata
| Trac field | Value |
|---|---|
| Version | 8.5 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |