steamPackages: add update-runtime-shell.nix to update runtime

+13
+13
pkgs/games/steam/update-runtime-shell.nix
··· 1 + with import <nixpkgs> {}; 2 + 3 + (python2.buildEnv.override { 4 + extraLibs = with python2Packages; 5 + [ debian 6 + ]; 7 + postBuild = '' 8 + mkdir -p $out/bin 9 + for i in ${nixUnstable}/bin/*; do 10 + ln -s $i $out/bin/$(basename $i) 11 + done 12 + ''; 13 + }).env