Quickcheck failure (from NixOS nixos-18.03.133224.5f59ab7d4e0)

[jpdoyle]

Failures:

  tests/Test/Hspec/Megaparsec.hs:52:13:
  1) Text.Megaparsec.Char.Lexer.symbol', when stream begins with the symbol, parses the symbol and trailing whitespace
       Falsifiable (after 266 tests):
         "EN\21629\&1PU0bjjlse8\19683gEz7DHBle0DpgasQ30M\305v\39822mIOEN\24479EJnBFHj\161307X1svLuNTVbcZ\n\n\n\t\t\t\t\t\n\t"
       expected: "EN\21629\&1PU0bjjlse8\19683gEz7DHBle0DpgasQ30M\305v\39822mIOEN\24479EJnBFHj\161307X1svLuNTVbcZ"
       but parsing failed with error:
         1:1:
         unexpected "EN命1PU0bjjlse8䳣gEz7DHBle0DpgasQ30Mıv鮎mIOEN徟EJnBFHj𧘛X1svLuNTVbcZ"
         expecting "EN命1PU0BJJLSE8䳣GEZ7DHBLE0DPGASQ30MIV鮎MIOEN徟EJNBFHJ𧘛X1SVLUNTVBCZ"

  To rerun use: --match "/Text.Megaparsec.Char.Lexer/symbol'/when stream begins with the symbol/parses the symbol and trailing whitespace/"

Randomized with seed 1460357806

[mrkkrp]

This is Megaparsec 6.5.0, right? This must be fixed in version 7.

[jpdoyle]

Ah yep!

Specifically I'm building hnix, which currently has megaparsec >=6.5 && <7.0 as a dependency. I guess I should encourage them to update.

[jpdoyle]

I've reported this to hnix haskell-nix/hnix#368