nixExpr2CabalExpr: added lots of hacks so that the function succeeds parsing all of Nixpkgs
nixExpr2CabalExpr: added lots of hacks so that the function succeeds parsing all of Nixpkgs

gridaphobe/cabal2nix,spencerjanssen/cabal2nix,Fuuzetsu/cabal2nix,jb55/cabal2nix,dmalikov/cabal2nix,psibi/cabal2nix,bennofs/cabal2nix