anchor.diff:      description = "A web interface for the hledger accounting tool";
       license = "GPL";
       platforms = self.ghc.meta.platforms;
  -    maintainers = [ self.stdenv.lib.maintainers.andres ];
     };
   })
  
positive.code: , parsec, regexpr, safe, shakespeareCss, shakespeareJs
  , shakespeareText, text, time, transformers, wai, waiExtra, warp
  , yaml, yesod, yesodCore, yesodDefault, yesodForm, yesodStatic
  }:
  
  cabal.mkDerivation (self: {
  
negative.code:     shakespeareJs shakespeareText text time transformers wai waiExtra
      warp yaml yesod yesodCore yesodDefault yesodForm yesodStatic
    ];
    testDepends = [ yesodCore yesodDefault yesodTest ];
    patchPhase = ''
      sed -r -i -e 's|blaze-html * >= 0.5 *&& < 0.6|blaze-html >= 0.5|' hledger-web.cabal
    '';
  