chrome-remote-desktop on nixos/nix

crd.nix

{ config, lib, pkgs, ...}: 
with lib;
    let 
        cfg = config.services.crd;
    in {
        options = {
            services.crd = {
                enable = mkEnableOption ''
                    chrome remote desktop, a service which allows for remote control of your desktop from anywhere.
                '';
                user = mkOption {
                    type = types.submodule;
                    description = ''
                        A user which the service will run as.
                    '';
                    example = "users.users.alice";
                };
                screenSize = mkOption {
                    type = types.string;
                    description = ''
                        Size of the screen (for all clients)
                    '';
                    default = "1366x768";
                    example = "1920x1080";
                };
                session = mkOption {
                    type = types.string;
                    description = ''
                        The X session that chrome remote desktop will control
                    '';
                    example = "gnome-session";
                };
            };
        };
        config = mkIf cfg.enable {
            systemd.services.chrome-remote-desktop = {
                description = "Chrome remote desktop service";
                path = with pkgs; [ sudo chrome-remote-desktop ];
                script = ''
                    sudo -u ${cfg.user.name} ${pkgs.chrome-remote-desktop}/opt/google/chrome-remote-desktop --start --size=${cfg.screenSize}
                '';
            };
            security.wrappers.crd-user-session.source = "${pkgs.chrome-remote-desktop}/opt/google/chrome-remote-desktop/user-session";
            system.activationScripts.crd-setup = {
                text = ''
                    if [[ -z $(cat ${cfg.user.home}/.chrome-remote-desktop-session) ]]; then
                        # Create the file
                        echo "export $(dbus-launch)" > ${cfg.user.home}/.chrome-remote-desktop-session
                        echo "exec ${cfg.session}" >> ${cfg.user.home}/.chrome-remote-desktop-session
                    fi
                '';
            };
        };
    }

default.nix

{ stdenv, lib, fetchurl, fetchgit, dpkg, python2, glibc, glib, pam, nss, nspr, expat, gnome3, xorg, fontconfig, dbus_daemon, alsaLib }:
stdenv.mkDerivation rec {
	name = "chrome-remote-desktop";
	src = fetchurl {
		sha256 = "d18baa7033d80cf458ffec808dacce11d737bf31e81f25884221867c8c6a3001";
		url = "https://dl.google.com/linux/direct/chrome-remote-desktop_current_amd64.deb";
	};
	unpackPhase = ''
		${dpkg}/bin/dpkg -x $src $out
	'';
	installPhase = ''
	'';
	patchPhase = ''
		sed \
	      -e '/^.*sudo_command =/ s/"gksudo .*"/"pkexec"/' \
	      -e '/^.*command =/ s/s -- sh -c/s sh -c/' \
	      -i $out/opt/google/chrome-remote-desktop/chrome-remote-desktop
		substituteInPlace $out/opt/google/chrome-remote-desktop/chrome-remote-desktop --replace /usr/bin/python2 ${python2.withPackages (ps: with ps;[ psutil ])}/bin/python2
		'';
	preFixup = let 
		libPath = lib.makeLibraryPath [glib pam nss nspr expat gnome3.gtk gnome3.gconf xorg.libXext xorg.libX11 xorg.libXcomposite xorg.libXrender xorg.libXrandr xorg.libXcursor xorg.libXdamage xorg.libXfixes xorg.libXi xorg.libXtst fontconfig xorg.libXScrnSaver dbus_daemon.lib alsaLib];
	in ''
		for i in $out/opt/google/$name/{chrome-remote-desktop-host,start-host,native-messaging-host,remote-assistance-host,user-session}; do
			patchelf --set-rpath "${libPath}" $i
			patchelf --set-interpreter ${glibc}/lib/ld-linux-x86-64.so.2 $i
		done
	'';
}