anchor.diff:      description = "Statically typed, imperative programming language";
       homepage = "https://nim-lang.org/";
       license = licenses.mit;
  -    maintainers = with maintainers; [ ehmry peterhoeg ];
  +    maintainers = with maintainers; [ ehmry ];
       platforms = with platforms; linux ++ darwin; # arbitrary
     };
   }
  
positive.code:   #    as part of building it, so it cannot be read-only
  
    checkInputs = [
      nodejs-slim-11_x tzdata coreutils
    ];
  
    nativeBuildInputs = [
  
negative.code:     ./koch install $out
      mv $out/nim/bin/* $out/bin/ && rmdir $out/nim/bin
      mv $out/nim/*     $out/     && rmdir $out/nim
  
      # Fortify hardening appends -O2 to gcc flags which is unwanted for unoptimized nim builds.
      wrapProgram $out/bin/nim \
        --run 'NIX_HARDENING_ENABLE=''${NIX_HARDENING_ENABLE/fortify/}' \
        --suffix PATH : ${lib.makeBinPath [ stdenv.cc ]}
  
      runHook postInstall
  