args: args.stdenv.mkDerivation { name = "shebangfix-0.0"; buildInputs = [args.perl]; file = ./shebangfix.pl; phases = "buildPhase"; buildPhase = " ensureDir \$out/bin s=\$out/bin/shebangfix cp \$file \$s chmod +x \$s perl \$s \$s "; meta = { description = "replaces the #!executable with $#!correctpath/executable "; }; }