Pantheon 8 (#312449)

  - Following [changes in Mint 22](https://github.com/linuxmint/mintupgrade/commit/f239cde908288b8c250f938e7311c7ffbc16bd59) we are no longer overriding Qt application styles. You can still restore the previous default with `qt.style = "gtk2"` and `qt.platformTheme = "gtk2"`.

  - Following [changes in Mint 20](https://github.com/linuxmint/mintupgrade-legacy/commit/ce15d946ed9a8cb8444abd25088edd824bfb18f6) we are replacing xplayer with celluloid since xplayer is no longer maintained.

- Pantheon has been updated to 8, please check the [upstream announcement](https://blog.elementary.io/os-8-available-now/) for more details.

  - Same as elementary OS, the X11 session is named "Classic Session" and the Wayland session is named "Secure Session".

  - The dock has been rewritten, you need to manually migrate the dock items on update. You can check `~/.config/plank/dock1/launchers/` for your previous settings.

- Xfce has been updated to 4.20, please check the [upstream feature tour](https://www.xfce.org/about/tour420) for more details.

  - Wayland session is still [experimental](https://wiki.xfce.org/releng/wayland_roadmap) and requires opt-in using `enableWaylandSession` option.

  - Overriding Wayland compositor is possible using `enableWaylandSession` option, but you might need to take care [`xfce4-session`](https://gitlab.xfce.org/xfce/xfce4-session/-/merge_requests/49), [`dbus-update-activation-environment`](https://github.com/labwc/labwc/blob/eaf11face68ee1f1bcc7ce1498304ca8c108c8ba/src/config/session.c#L234) and [`systemctl --user import-environment`](https://github.com/labwc/labwc/blob/eaf11face68ee1f1bcc7ce1498304ca8c108c8ba/src/config/session.c#L239) on startup.

{ config, lib, pkgs, ... }:

{

  meta = with lib; {

    maintainers = with lib.maintainers; [ ] ++ lib.teams.pantheon.members;

    maintainers = with lib.maintainers; [ ];

  };

  ###### interface

      # https://github.com/elementary/greeter/issues/368

      services.displayManager.defaultSession = mkDefault "pantheon";

      services.xserver.displayManager.sessionCommands = ''

        if test "$XDG_CURRENT_DESKTOP" = "Pantheon"; then

            true

      environment.extraInit = ''

        ${concatMapStrings (p: ''

          if [ -d "${p}/share/gsettings-schemas/${p.name}" ]; then

            export XDG_DATA_DIRS=$XDG_DATA_DIRS''${XDG_DATA_DIRS:+:}${p}/share/gsettings-schemas/${p.name}

            export LD_LIBRARY_PATH=$LD_LIBRARY_PATH''${LD_LIBRARY_PATH:+:}${p}/lib

          fi

        '') cfg.sessionPath}

        fi

      '';

      # Default services

      hardware.bluetooth.enable = mkDefault true;

      security.polkit.enable = true;

      services.accounts-daemon.enable = true;

      services.bamf.enable = true;

      services.colord.enable = mkDefault true;

      services.fwupd.enable = mkDefault true;

      # TODO: Enable once #177946 is resolved

      ])) config.environment.pantheon.excludePackages;

      # Settings from elementary-default-settings

      environment.etc."gtk-3.0/settings.ini".source = "${pkgs.pantheon.elementary-default-settings}/etc/gtk-3.0/settings.ini";

      # GTK4 will try both $XDG_CONFIG_DIRS/gtk-4.0 and ${gtk4}/etc/gtk-4.0, but not /etc/gtk-4.0.

      environment.etc."xdg/gtk-4.0/settings.ini".source = "${pkgs.pantheon.elementary-default-settings}/etc/gtk-4.0/settings.ini";

      xdg.mime.enable = true;

      xdg.icons.enable = true;

  patroni = handleTestOn ["x86_64-linux"] ./patroni.nix {};

  pantalaimon = handleTest ./matrix/pantalaimon.nix {};

  pantheon = handleTest ./pantheon.nix {};

  pantheon-wayland = handleTest ./pantheon-wayland.nix {};

  paperless = handleTest ./paperless.nix {};

  parsedmarc = handleTest ./parsedmarc {};

  password-option-override-ordering = handleTest ./password-option-override-ordering.nix {};

import ./make-test-python.nix (

  { pkgs, lib, ... }:

  {

    name = "pantheon-wayland";

    meta.maintainers = lib.teams.pantheon.members;

    nodes.machine =

      { nodes, ... }:

      let

        videosAutostart = pkgs.writeTextFile {

          name = "autostart-elementary-videos";

          destination = "/etc/xdg/autostart/io.elementary.videos.desktop";

          text = ''

            [Desktop Entry]

            Version=1.0

            Name=Videos

            Type=Application

            Terminal=false

            Exec=io.elementary.videos %U

          '';

        };

      in

      {

        imports = [ ./common/user-account.nix ];

        # Workaround ".gala-wrapped invoked oom-killer"

        virtualisation.memorySize = 2047;

        services.xserver.enable = true;

        services.xserver.desktopManager.pantheon.enable = true;

        services.displayManager = {

          autoLogin.enable = true;

          autoLogin.user = nodes.machine.users.users.alice.name;

          defaultSession = "pantheon-wayland";

        };

        # We ship pantheon.appcenter by default when this is enabled.

        services.flatpak.enable = true;

        # For basic OCR tests.

        environment.systemPackages = [ videosAutostart ];

        # We don't ship gnome-text-editor in Pantheon module, we add this line mainly

        # to catch eval issues related to this option.

        environment.pantheon.excludePackages = [ pkgs.gnome-text-editor ];

      };

    enableOCR = true;

    testScript =

      { nodes, ... }:

      let

        user = nodes.machine.users.users.alice;

      in

      ''

        machine.wait_for_unit("display-manager.service")

        with subtest("Wait for wayland server"):

            machine.wait_for_file("/run/user/${toString user.uid}/wayland-0")

        with subtest("Check that logging in has given the user ownership of devices"):

            machine.succeed("getfacl -p /dev/snd/timer | grep -q ${user.name}")

        with subtest("Check if Pantheon components actually start"):

            # We specifically check gsd-xsettings here since it is manually pulled up by gala.

            # https://github.com/elementary/gala/pull/2140

            for i in ["gala", "io.elementary.wingpanel", "io.elementary.dock", "gsd-media-keys", "gsd-xsettings", "io.elementary.desktop.agent-polkit"]:

                machine.wait_until_succeeds(f"pgrep -f {i}")

            for i in ["io.elementary.files.xdg-desktop-portal.service"]:

                machine.wait_for_unit(i, "${user.name}")

        with subtest("Check if various environment variables are set"):

            cmd = "xargs --null --max-args=1 echo < /proc/$(pgrep -xf ${pkgs.pantheon.gala}/bin/gala)/environ"

            machine.succeed(f"{cmd} | grep 'XDG_CURRENT_DESKTOP' | grep 'Pantheon'")

            machine.succeed(f"{cmd} | grep 'XDG_SESSION_TYPE' | grep 'wayland'")

            # Hopefully from the sessionPath option.

            machine.succeed(f"{cmd} | grep 'XDG_DATA_DIRS' | grep 'gsettings-schemas/pantheon-agent-geoclue2'")

            # Hopefully from login shell.

            machine.succeed(f"{cmd} | grep '__NIXOS_SET_ENVIRONMENT_DONE' | grep '1'")

        with subtest("Wait for elementary videos autostart"):

            machine.wait_until_succeeds("pgrep -f io.elementary.videos")

            machine.wait_for_text("No Videos Open")

            machine.screenshot("videos")

        with subtest("Trigger multitasking view"):

            cmd = "dbus-send --session --dest=org.pantheon.gala --print-reply /org/pantheon/gala org.pantheon.gala.PerformAction int32:1"

            env = "DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/${toString user.uid}/bus"

            machine.succeed(f"su - ${user.name} -c '{env} {cmd}'")

            machine.sleep(5)

            machine.screenshot("multitasking")

            machine.succeed(f"su - ${user.name} -c '{env} {cmd}'")

        with subtest("Check if gala has ever coredumped"):

            machine.fail("coredumpctl --json=short | grep gala")

            # So we can see the dock.

            machine.execute("pkill -f -9 io.elementary.videos")

            machine.sleep(10)

            machine.screenshot("screen")

      '';

  }

)