diff options
Diffstat (limited to 'nixos/modules/services/x11/display-managers/default.nix')
| -rw-r--r-- | nixos/modules/services/x11/display-managers/default.nix | 251 |
1 files changed, 160 insertions, 91 deletions
diff --git a/nixos/modules/services/x11/display-managers/default.nix b/nixos/modules/services/x11/display-managers/default.nix index c252c3c90c9..2d809b5cc9f 100644 --- a/nixos/modules/services/x11/display-managers/default.nix +++ b/nixos/modules/services/x11/display-managers/default.nix @@ -27,16 +27,7 @@ let Xft.hintstyle: hintslight ''; - mkCases = session: - concatStrings ( - mapAttrsToList (name: starts: '' - (${name}) - ${concatMapStringsSep "\n " (n: n.start) starts} - ;; - '') (lib.groupBy (n: n.name) session) - ); - - # file provided by services.xserver.displayManager.session.wrapper + # file provided by services.xserver.displayManager.sessionData.wrapper xsessionWrapper = pkgs.writeScript "xsession-wrapper" '' #! ${pkgs.bash}/bin/bash @@ -116,94 +107,44 @@ let # Run the supplied session command. Remove any double quotes with eval. eval exec "$@" else - # Fall back to the default window/desktopManager - exec ${cfg.displayManager.session.script} + # TODO: Do we need this? Should not the session always exist? + echo "error: unknown session $1" 1>&2 + exit 1 fi ''; - # file provided by services.xserver.displayManager.session.script - xsession = wm: dm: pkgs.writeScript "xsession" - '' - #! ${pkgs.bash}/bin/bash - - # Legacy session script used to construct .desktop files from - # `services.xserver.displayManager.session` entries. Called from - # `sessionWrapper`. - - # Expected parameters: - # $1 = <desktop-manager>+<window-manager> - - # The first argument of this script is the session type. - sessionType="$1" - if [ "$sessionType" = default ]; then sessionType=""; fi - - # The session type is "<desktop-manager>+<window-manager>", so - # extract those (see: - # http://wiki.bash-hackers.org/syntax/pe#substring_removal). - windowManager="''${sessionType##*+}" - : ''${windowManager:=${cfg.windowManager.default}} - desktopManager="''${sessionType%%+*}" - : ''${desktopManager:=${cfg.desktopManager.default}} - - # Start the window manager. - case "$windowManager" in - ${mkCases wm} - (*) echo "$0: Window manager '$windowManager' not found.";; - esac - - # Start the desktop manager. - case "$desktopManager" in - ${mkCases dm} - (*) echo "$0: Desktop manager '$desktopManager' not found.";; - esac - - ${optionalString cfg.updateDbusEnvironment '' - ${lib.getBin pkgs.dbus}/bin/dbus-update-activation-environment --systemd --all - ''} - - test -n "$waitPID" && wait "$waitPID" - - ${config.systemd.package}/bin/systemctl --user stop graphical-session.target - - exit 0 - ''; - - # Desktop Entry Specification: - # - https://standards.freedesktop.org/desktop-entry-spec/latest/ - # - https://standards.freedesktop.org/desktop-entry-spec/latest/ar01s06.html - mkDesktops = names: pkgs.runCommand "desktops" + installedSessions = pkgs.runCommand "desktops" { # trivial derivation preferLocalBuild = true; allowSubstitutes = false; } '' - mkdir -p "$out/share/xsessions" - ${concatMapStrings (n: '' - cat - > "$out/share/xsessions/${n}.desktop" << EODESKTOP - [Desktop Entry] - Version=1.0 - Type=XSession - TryExec=${cfg.displayManager.session.script} - Exec=${cfg.displayManager.session.script} "${n}" - Name=${n} - Comment= - EODESKTOP - '') names} + mkdir -p "$out/share/"{xsessions,wayland-sessions} ${concatMapStrings (pkg: '' + for n in ${concatStringsSep " " pkg.providedSessions}; do + if ! test -f ${pkg}/share/wayland-sessions/$n.desktop -o \ + -f ${pkg}/share/xsessions/$n.desktop; then + echo "Couldn't find provided session name, $n.desktop, in session package ${pkg.name}:" + echo " ${pkg}" + return 1 + fi + done + if test -d ${pkg}/share/xsessions; then ${xorg.lndir}/bin/lndir ${pkg}/share/xsessions $out/share/xsessions fi - '') cfg.displayManager.extraSessionFilePackages} - - ${concatMapStrings (pkg: '' if test -d ${pkg}/share/wayland-sessions; then - mkdir -p "$out/share/wayland-sessions" ${xorg.lndir}/bin/lndir ${pkg}/share/wayland-sessions $out/share/wayland-sessions fi - '') cfg.displayManager.extraSessionFilePackages} + '') cfg.displayManager.sessionPackages} ''; + dmDefault = cfg.desktopManager.default; + wmDefault = cfg.windowManager.default; + + defaultSessionFromLegacyOptions = concatStringsSep "+" (filter (s: s != null) ([ dmDefault ] ++ optional (wmDefault != "none") wmDefault)); + in { @@ -261,11 +202,24 @@ in ''; }; - extraSessionFilePackages = mkOption { - type = types.listOf types.package; + sessionPackages = mkOption { + type = with types; listOf (package // { + description = "package with provided sessions"; + check = p: assertMsg + (package.check p && p ? providedSessions + && p.providedSessions != [] && all isString p.providedSessions) + '' + Package, '${p.name}', did not specify any session names, as strings, in + 'passthru.providedSessions'. This is required when used as a session package. + + The session names can be looked up in: + ${p}/share/xsessions + ${p}/share/wayland-sessions + ''; + }); default = []; description = '' - A list of packages containing xsession files to be passed to the display manager. + A list of packages containing x11 or wayland session files to be passed to the display manager. ''; }; @@ -296,18 +250,50 @@ in inside the display manager with the desktop manager name followed by the window manager name. ''; - apply = list: rec { - wm = filter (s: s.manage == "window") list; - dm = filter (s: s.manage == "desktop") list; - names = flip concatMap dm - (d: map (w: d.name + optionalString (w.name != "none") ("+" + w.name)) - (filter (w: d.name != "none" || w.name != "none") wm)); - desktops = mkDesktops names; - script = xsession wm dm; + }; + + sessionData = mkOption { + description = "Data exported for display managers’ convenience"; + internal = true; + default = {}; + apply = val: { wrapper = xsessionWrapper; + desktops = installedSessions; + sessionNames = concatMap (p: p.providedSessions) cfg.displayManager.sessionPackages; + # We do not want to force users to set defaultSession when they have only single DE. + autologinSession = + if cfg.displayManager.defaultSession != null then + cfg.displayManager.defaultSession + else if cfg.displayManager.sessionData.sessionNames != [] then + head cfg.displayManager.sessionData.sessionNames + else + null; }; }; + defaultSession = mkOption { + type = with types; nullOr str // { + description = "session name"; + check = d: + assertMsg (d != null -> (str.check d && elem d cfg.displayManager.sessionData.sessionNames)) '' + Default graphical session, '${d}', not found. + Valid names for 'services.xserver.displayManager.defaultSession' are: + ${concatStringsSep "\n " cfg.displayManager.sessionData.sessionNames} + ''; + }; + default = + if dmDefault != null || wmDefault != null then + defaultSessionFromLegacyOptions + else + null; + example = "gnome"; + description = '' + Graphical session to pre-select in the session chooser (only effective for GDM and LightDM). + + On GDM, LightDM and SDDM, it will also be used as a session for auto-login. + ''; + }; + job = { preStart = mkOption { @@ -356,6 +342,27 @@ in }; config = { + assertions = [ + { + assertion = cfg.desktopManager.default != null || cfg.windowManager.default != null -> cfg.displayManager.defaultSession == defaultSessionFromLegacyOptions; + message = "You cannot use both services.xserver.displayManager.defaultSession option and legacy options (services.xserver.desktopManager.default and services.xserver.windowManager.default)."; + } + ]; + + warnings = + mkIf (dmDefault != null || wmDefault != null) [ + '' + The following options are deprecated: + ${concatStringsSep "\n " (map ({c, t}: t) (filter ({c, t}: c != null) [ + { c = dmDefault; t = "- services.xserver.desktopManager.default"; } + { c = wmDefault; t = "- services.xserver.windowManager.default"; } + ]))} + Please use + services.xserver.displayManager.defaultSession = "${concatStringsSep "+" (filter (s: s != null) [ dmDefault wmDefault ])}"; + instead. + '' + ]; + services.xserver.displayManager.xserverBin = "${xorg.xorgserver.out}/bin/X"; systemd.user.targets.graphical-session = { @@ -364,6 +371,67 @@ in StopWhenUnneeded = false; }; }; + + # Create desktop files and scripts for starting sessions for WMs/DMs + # that do not have upstream session files (those defined using services.{display,desktop,window}Manager.session options). + services.xserver.displayManager.sessionPackages = + let + dms = filter (s: s.manage == "desktop") cfg.displayManager.session; + wms = filter (s: s.manage == "window") cfg.displayManager.session; + + # Script responsible for starting the window manager and the desktop manager. + xsession = wm: dm: pkgs.writeScript "xsession" '' + #! ${pkgs.bash}/bin/bash + + # Legacy session script used to construct .desktop files from + # `services.xserver.displayManager.session` entries. Called from + # `sessionWrapper`. + + # Start the window manager. + ${wm.start} + + # Start the desktop manager. + ${dm.start} + + ${optionalString cfg.updateDbusEnvironment '' + ${lib.getBin pkgs.dbus}/bin/dbus-update-activation-environment --systemd --all + ''} + + test -n "$waitPID" && wait "$waitPID" + + ${config.systemd.package}/bin/systemctl --user stop graphical-session.target + + exit 0 + ''; + in + # We will generate every possible pair of WM and DM. + concatLists ( + crossLists + (dm: wm: let + sessionName = "${dm.name}${optionalString (wm.name != "none") ("+" + wm.name)}"; + script = xsession dm wm; + in + optional (dm.name != "none" || wm.name != "none") + (pkgs.writeTextFile { + name = "${sessionName}-xsession"; + destination = "/share/xsessions/${sessionName}.desktop"; + # Desktop Entry Specification: + # - https://standards.freedesktop.org/desktop-entry-spec/latest/ + # - https://standards.freedesktop.org/desktop-entry-spec/latest/ar01s06.html + text = '' + [Desktop Entry] + Version=1.0 + Type=XSession + TryExec=${script} + Exec=${script} + Name=${sessionName} + ''; + } // { + providedSessions = [ sessionName ]; + }) + ) + [dms wms] + ); }; imports = [ @@ -371,6 +439,7 @@ in "The option is no longer necessary because all display managers have already delegated lid management to systemd.") (mkRenamedOptionModule [ "services" "xserver" "displayManager" "job" "logsXsession" ] [ "services" "xserver" "displayManager" "job" "logToFile" ]) (mkRenamedOptionModule [ "services" "xserver" "displayManager" "logToJournal" ] [ "services" "xserver" "displayManager" "job" "logToJournal" ]) + (mkRenamedOptionModule [ "services" "xserver" "displayManager" "extraSessionFilesPackages" ] [ "services" "xserver" "displayManager" "sessionPackages" ]) ]; } |