1 files changed, 56 insertions, 0 deletions
diff --git a/nixos/modules/services/desktops/flatpak.nix b/nixos/modules/services/desktops/flatpak.nix
new file mode 100644
index 00000000000..5fecc64b4f7
--- /dev/null
+++ b/nixos/modules/services/desktops/flatpak.nix
@@ -0,0 +1,56 @@
+# flatpak service.
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.flatpak;
+in {
+  meta = {
+    doc = ./flatpak.xml;
+    maintainers = pkgs.flatpak.meta.maintainers;
+  };
+
+  ###### interface
+  options = {
+    services.flatpak = {
+      enable = mkEnableOption "flatpak";
+    };
+  };
+
+
+  ###### implementation
+  config = mkIf cfg.enable {
+
+    assertions = [
+      { assertion = (config.xdg.portal.enable == true);
+        message = "To use Flatpak you must enable XDG Desktop Portals with xdg.portal.enable.";
+      }
+    ];
+
+    environment.systemPackages = [ pkgs.flatpak ];
+
+    security.polkit.enable = true;
+
+    services.dbus.packages = [ pkgs.flatpak ];
+
+    systemd.packages = [ pkgs.flatpak ];
+
+    environment.profiles = [
+      "$HOME/.local/share/flatpak/exports"
+      "/var/lib/flatpak/exports"
+    ];
+
+    # It has been possible since https://github.com/flatpak/flatpak/releases/tag/1.3.2
+    # to build a SELinux policy module.
+
+    # TODO: use sysusers.d
+    users.users.flatpak = {
+      description = "Flatpak system helper";
+      group = "flatpak";
+      isSystemUser = true;
+    };
+
+    users.groups.flatpak = { };
+  };
+}