{ stdenv, fetchgit }: stdenv.mkDerivation rec { rev = "e2a6a9cd9da70175881ab991220c86aa87179509"; version = "2019-07-26"; name = "slack-theme-black-${version}"; src = fetchgit { inherit rev; url = "https://github.com/laCour/slack-night-mode"; sha256 = "1jwxy63qzgvr83idsgcg7yhm9kn0ybfji1m964c5c6ypzcm7j10v"; }; dontUnpack = true; buildCommand = '' mkdir $out cp $src/css/raw/black.css $out/theme.css ''; }