Merge pull request #292872 from OPNA2608/init/lomiri/lomiri

- Plasma 6 is now available and can be installed with `services.xserver.desktopManager.plasma6.enable = true;`. Plasma 5 will likely be deprecated in the next release (24.11). Note that Plasma 6 runs as Wayland by default, and the X11 session needs to be explicitly selected if necessary.

- The desktop mode of Lomiri (formerly known as Unity8), using Mir 2.x to function as a Wayland compositor, is now available and can be installed with `services.desktopManager.lomiri.enable = true`. Note that some core applications, services and indicators have yet to be packaged, and some functions may remain incomplete, but the base experience should be there.

## New Services {#sec-release-24.05-new-services}

<!-- To avoid merge conflicts, consider adding your item at an arbitrary place in the list instead. -->

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

let

  cfg = config.services.desktopManager.lomiri;

in {

  options.services.desktopManager.lomiri = {

    enable = lib.mkEnableOption ''

      the Lomiri graphical shell (formerly known as Unity8)

    '';

  };

  config = lib.mkIf cfg.enable {

    environment = {

      systemPackages = (with pkgs; [

        glib # XDG MIME-related tools identify it as GNOME, add gio for MIME identification to work

        libayatana-common

        ubports-click

      ]) ++ (with pkgs.lomiri; [

        content-hub

        hfd-service

        history-service

        libusermetrics

        lomiri

        lomiri-download-manager

        lomiri-schemas # exposes some required dbus interfaces

        lomiri-session # wrappers to properly launch the session

        lomiri-sounds

        lomiri-system-settings

        lomiri-terminal-app

        lomiri-thumbnailer

        lomiri-url-dispatcher

        lomiri-wallpapers

        mediascanner2 # TODO possibly needs to be kicked off by graphical-session.target

        morph-browser

        qtmir # not having its desktop file for Xwayland available causes any X11 application to crash the session

        suru-icon-theme

        telephony-service

      ]);

    };

    systemd.packages = with pkgs.lomiri; [

      hfd-service

      lomiri-download-manager

    ];

    services.dbus.packages = with pkgs.lomiri; [

      hfd-service

      libusermetrics

      lomiri-download-manager

    ];

    fonts.packages = with pkgs; [

      # Applications tend to default to Ubuntu font

      ubuntu_font_family

    ];

    # Copy-pasted basic stuff

    hardware.opengl.enable = lib.mkDefault true;

    fonts.enableDefaultPackages = lib.mkDefault true;

    programs.dconf.enable = lib.mkDefault true;

    # Xwayland is partly hardcoded in Mir so it can't really be fully turned off, and it must be on PATH for X11 apps *and Lomiri's web browser* to work.

    # Until Mir/Lomiri can be properly used without it, force it on so everything behaves as expected.

    programs.xwayland.enable = lib.mkForce true;

    services.accounts-daemon.enable = true;

    services.ayatana-indicators = {

      enable = true;

      packages = (with pkgs; [

        ayatana-indicator-datetime

        ayatana-indicator-messages

        ayatana-indicator-session

      ]) ++ (with pkgs.lomiri; [

        telephony-service

      ]);

    };

    services.udisks2.enable = true;

    services.upower.enable = true;

    services.geoclue2.enable = true;

    services.gnome.evolution-data-server = {

      enable = true;

      plugins = with pkgs; [

        # TODO: lomiri.address-book-service

      ];

    };

    services.telepathy.enable = true;

    services.displayManager = {

      defaultSession = lib.mkDefault "lomiri";

      sessionPackages = with pkgs.lomiri; [ lomiri-session ];

    };

    services.xserver = {

      enable = lib.mkDefault true;

      displayManager.lightdm = {

        enable = lib.mkDefault true;

        greeters.lomiri.enable = lib.mkDefault true;

      };

    };

    environment.pathsToLink = [

      # Configs for inter-app data exchange system

      "/share/content-hub/peers"

      # Configs for inter-app URL requests

      "/share/lomiri-url-dispatcher/urls"

      # Splash screens & other images for desktop apps launched via lomiri-app-launch

      "/share/lomiri-app-launch"

      # TODO Try to get maliit stuff working

      "/share/maliit/plugins"

      # Data

      "/share/locale" # TODO LUITK hardcoded default locale path, fix individual apps to not rely on it

      "/share/sounds"

      "/share/wallpapers"

    ];

    systemd.user.services = {

      # Unconditionally run service that collects system-installed URL handlers before LUD

      # TODO also run user-installed one?

      "lomiri-url-dispatcher-update-system-dir" = {

        description = "Lomiri URL dispatcher system directory updater";

        wantedBy = [ "lomiri-url-dispatcher.service" ];

        before = [ "lomiri-url-dispatcher.service" ];

        serviceConfig = {

          Type = "oneshot";

          ExecStart = "${pkgs.lomiri.lomiri-url-dispatcher}/libexec/lomiri-url-dispatcher/lomiri-update-directory /run/current-system/sw/share/lomiri-url-dispatcher/urls/";

        };

      };

    };

    systemd.services = {

      "dbus-com.lomiri.UserMetrics" = {

        serviceConfig = {

          Type = "dbus";

          BusName = "com.lomiri.UserMetrics";

          User = "usermetrics";

          StandardOutput = "syslog";

          SyslogIdentifier = "com.lomiri.UserMetrics";

          ExecStart = "${pkgs.lomiri.libusermetrics}/libexec/libusermetrics/usermetricsservice";

        } // lib.optionalAttrs (!config.security.apparmor.enable) {

          # Due to https://gitlab.com/ubports/development/core/libusermetrics/-/issues/8, auth must be disabled when not using AppArmor, lest the next database usage breaks

          Environment = "USERMETRICS_NO_AUTH=1";

        };

      };

    };

    users.users.usermetrics = {

      group = "usermetrics";

      home = "/var/lib/usermetrics";

      createHome = true;

      isSystemUser = true;

    };

    users.groups.usermetrics = { };

    # TODO content-hub cannot pass files between applications without asking AA for permissions. And alot of the Lomiri stack is designed with AA availability in mind. This might be a requirement to be closer to upstream?

    # But content-hub currently fails to pass files between applications even with AA enabled, and we can get away without AA in many places. Let's see how this develops before requiring this for good.

    # security.apparmor.enable = true;

  };

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

}

    ./none.nix ./xterm.nix ./phosh.nix ./xfce.nix ./plasma5.nix ../../desktop-managers/plasma6.nix ./lumina.nix

    ./lxqt.nix ./enlightenment.nix ./gnome.nix ./retroarch.nix ./kodi.nix

    ./mate.nix ./pantheon.nix ./surf-display.nix ./cde.nix

    ./cinnamon.nix ./budgie.nix ./deepin.nix

    ./cinnamon.nix ./budgie.nix ./deepin.nix ../../desktop-managers/lomiri.nix

  ];

  options = {

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

let

  dmcfg = config.services.displayManager;

  ldmcfg = config.services.xserver.displayManager.lightdm;

  cfg = ldmcfg.greeters.lomiri;

in

{

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

  options = {

    services.xserver.displayManager.lightdm.greeters.lomiri = {

      enable = lib.mkEnableOption "lomiri's greeter as the lightdm greeter";

    };

  };

  config = lib.mkIf (ldmcfg.enable && cfg.enable) {

    services.xserver.displayManager.lightdm.greeters.gtk.enable = false;

    services.xserver.displayManager.lightdm.greeter = lib.mkDefault {

      package = pkgs.lomiri.lomiri.greeter;

      name = "lomiri-greeter";

    };

    # Greeter needs to be run through its wrapper

    # Greeter doesn't work with our set-session.py script, need to set default user-session

    services.xserver.displayManager.lightdm.extraSeatDefaults = ''

      greeter-wrapper = ${lib.getExe' pkgs.lomiri.lomiri "lomiri-greeter-wrapper"}

      user-session = ${dmcfg.defaultSession}

    '';

  };

}

    ./lightdm-greeters/mini.nix

    ./lightdm-greeters/enso-os.nix

    ./lightdm-greeters/pantheon.nix

    ./lightdm-greeters/lomiri.nix

    ./lightdm-greeters/tiny.nix

    ./lightdm-greeters/slick.nix

    ./lightdm-greeters/mobile.nix