Revision History for language-nix

2.3.0

• Language.Nix.Identifier now exports nixKeywords which lists keywords in Nix that are parseable as simple identifiers, but have special meaning, like assert and with. Consequently, they can't be used as (simple) identifiers in Nix code.

  quote, needsQuoting and Pretty will take this list into account and quote such identifiers. However, HasParser will not reject them even if they are unquoted.

• Resolved discrepancies between Language.Nix.Identifier and Nix w.r.t. quoting and escaping:

  • Fixed missing escaping of some Nix syntax elements, e.g. in the case of ident # "${foo}".
  • Pretty printing Identifiers will no longer produce escape sequences Haskell supports, but Nix doesn't.
  • Parsing Identifiers won't interpret escape sequences that Nix wouldn't understand.

• Added an hspec/QuickCheck based test suite.