oh-my-zsh = pkgs.lib.overrideDerivation pkgs.oh-my-zsh (attrs: {
            # Install spaceship theme
            installPhase = [
              attrs.installPhase
              ''outdir=$out/share/oh-my-zsh
                mkdir -p $outdir/custom/themes
                ${pkgs.curl}/bin/curl -k -o $outdir/custom/themes/spaceship.zsh-theme https://raw.githubusercontent.com/denysdovhan/spaceship-zsh-theme/master/spaceship.zsh''
            ];
        });