INITIALPATH:7:22: error: • No instance for (PyFToString Bool) arising from a use of ‘pyfToString’ • In the second argument of ‘(.)’, namely ‘pyfToString’ In the expression: (PyF.Formatters.formatString (PyF.Internal.QQ.newPaddingKForString PyF.Internal.QQ.PaddingDefaultK)) Nothing . pyfToString In the first argument of ‘putStrLn’, namely ‘(((PyF.Formatters.formatString (PyF.Internal.QQ.newPaddingKForString PyF.Internal.QQ.PaddingDefaultK)) Nothing . pyfToString) True)’ | 7 | main = putStrLn [fmt|{True:s}|] | ^^^^^^^^^^