I somehow hadn't been aware that the libraries in this repo offer support for GHC >= 7.4 / base >= 4.5
.
However we don't have CI with 7.4 or 7.6. Due to this, the build with 7.4 was broken by 58c140a which uses LambdaCase
in prettyprinter
. 96ba52a uses LambdaCase
in prettyprinter-ansi-terminal
.