diff --git a/nixos/tests/all-tests.nix b/nixos/tests/all-tests.nix
index 7944952e2f4e..fd5a0186bdec 100644
--- a/nixos/tests/all-tests.nix
+++ b/nixos/tests/all-tests.nix
@@ -503,6 +503,7 @@ in {
   lxd = pkgs.recurseIntoAttrs (handleTest ./lxd { inherit handleTestOn; });
   lxd-image-server = handleTest ./lxd-image-server.nix {};
   #logstash = handleTest ./logstash.nix {};
+  lomiri = handleTest ./lomiri.nix {};
   lomiri-system-settings = handleTest ./lomiri-system-settings.nix {};
   lorri = handleTest ./lorri/default.nix {};
   maddy = discoverTests (import ./maddy { inherit handleTest; });
diff --git a/nixos/tests/lomiri.nix b/nixos/tests/lomiri.nix
new file mode 100644
index 000000000000..c1e777873b08
--- /dev/null
+++ b/nixos/tests/lomiri.nix
@@ -0,0 +1,281 @@
+import ./make-test-python.nix ({ pkgs, lib, ... }: let
+  # Just to make sure everything is the same, need it for OCR & navigating greeter
+  user = "alice";
+  description = "Alice Foobar";
+  password = "foobar";
+in {
+  name = "lomiri";
+
+  meta = {
+    maintainers = lib.teams.lomiri.members;
+  };
+
+  nodes.machine = { config, ... }: {
+    imports = [
+      ./common/user-account.nix
+    ];
+
+    users.users.${user} = {
+      inherit description password;
+    };
+
+    services.desktopManager.lomiri.enable = lib.mkForce true;
+    services.displayManager.defaultSession = lib.mkForce "lomiri";
+
+    fonts.packages = [ pkgs.inconsolata ];
+
+    environment = {
+      # Help with OCR
+      etc."xdg/alacritty/alacritty.yml".text = lib.generators.toYAML { } {
+        font = rec {
+          normal.family = "Inconsolata";
+          bold.family = normal.family;
+          italic.family = normal.family;
+          bold_italic.family = normal.family;
+          size = 16;
+        };
+        colors = rec {
+          primary = {
+            foreground = "0x000000";
+            background = "0xffffff";
+          };
+          normal = {
+            green = primary.foreground;
+          };
+        };
+      };
+
+      variables = {
+        # So we can test what content-hub is working behind the scenes
+        CONTENT_HUB_LOGGING_LEVEL = "2";
+      };
+
+      systemPackages = with pkgs; [
+        # For a convenient way of kicking off content-hub peer collection
+        lomiri.content-hub.examples
+
+        # Forcing alacritty to run as an X11 app when opened from the starter menu
+        (symlinkJoin {
+          name = "x11-${alacritty.name}";
+
+          paths = [ alacritty ];
+
+          nativeBuildInputs = [ makeWrapper ];
+
+          postBuild = ''
+            wrapProgram $out/bin/alacritty \
+              --set WINIT_UNIX_BACKEND x11 \
+              --set WAYLAND_DISPLAY ""
+          '';
+
+          inherit (alacritty) meta;
+        })
+      ];
+    };
+
+    # Help with OCR
+    systemd.tmpfiles.settings = let
+      white = "255, 255, 255";
+      black = "0, 0, 0";
+      colorSection = color: {
+        Color = color;
+        Bold = true;
+        Transparency = false;
+      };
+      terminalColors = pkgs.writeText "customized.colorscheme" (lib.generators.toINI {} {
+        Background = colorSection white;
+        Foreground = colorSection black;
+        Color2 = colorSection black;
+        Color2Intense = colorSection black;
+      });
+      terminalConfig = pkgs.writeText "terminal.ubports.conf" (lib.generators.toINI {} {
+        General = {
+          colorScheme = "customized";
+          fontSize = "16";
+          fontStyle = "Inconsolata";
+        };
+      });
+      confBase = "${config.users.users.${user}.home}/.config";
+      userDirArgs = {
+        mode = "0700";
+        user = user;
+        group = "users";
+      };
+    in {
+      "10-lomiri-test-setup" = {
+        "${confBase}".d = userDirArgs;
+        "${confBase}/terminal.ubports".d = userDirArgs;
+        "${confBase}/terminal.ubports/customized.colorscheme".L.argument = "${terminalColors}";
+        "${confBase}/terminal.ubports/terminal.ubports.conf".L.argument = "${terminalConfig}";
+      };
+    };
+  };
+
+  enableOCR = true;
+
+  testScript = { nodes, ... }: ''
+    def open_starter():
+        """
+        Open the starter, and ensure it's opened.
+        """
+        machine.send_key("meta_l-a")
+        # Look for any of the default apps
+        machine.wait_for_text(r"(Search|System|Settings|Morph|Browser|Terminal|Alacritty)")
+
+    def toggle_maximise():
+        """
+        Send the keybind to maximise the current window.
+        """
+        machine.send_key("ctrl-meta_l-up")
+
+        # For some reason, Lomiri in these VM tests very frequently opens the starter menu a few seconds after sending the above.
+        # Because this isn't 100% reproducible all the time, and there is no command to await when OCR doesn't pick up some text,
+        # the best we can do is send some Escape input after waiting some arbitrary time and hope that it works out fine.
+        machine.sleep(5)
+        machine.send_key("esc")
+        machine.sleep(5)
+
+    start_all()
+    machine.wait_for_unit("multi-user.target")
+
+    # Lomiri in greeter mode should work & be able to start a session
+    with subtest("lomiri greeter works"):
+        machine.wait_for_unit("display-manager.service")
+        # Start page shows current tie
+        machine.wait_for_text(r"(AM|PM)")
+        machine.screenshot("lomiri_greeter_launched")
+
+        # Advance to login part
+        machine.send_key("ret")
+        machine.wait_for_text("${description}")
+        machine.screenshot("lomiri_greeter_login")
+
+        # Login
+        machine.send_chars("${password}\n")
+        # Best way I can think of to differenciate "Lomiri in LightDM greeter mode" from "Lomiri in user shell mode"
+        machine.wait_until_succeeds("pgrep -u ${user} -f 'lomiri --mode=full-shell'")
+
+    # The session should start, and not be stuck in i.e. a crash loop
+    with subtest("lomiri starts"):
+        # Output rendering from Lomiri has started when it starts printing performance diagnostics
+        machine.wait_for_console_text("Last frame took")
+        # Look for datetime's clock, one of the last elements to load
+        machine.wait_for_text(r"(AM|PM)")
+        machine.screenshot("lomiri_launched")
+
+    # Working terminal keybind is good
+    with subtest("terminal keybind works"):
+        machine.send_key("ctrl-alt-t")
+        machine.wait_for_text(r"(${user}|machine)")
+        machine.screenshot("terminal_opens")
+
+        # lomiri-terminal-app has a separate VM test to test its basic functionality
+
+        # for the LSS content-hub test to work reliably, we need to kick off peer collecting
+        machine.send_chars("content-hub-test-importer\n")
+        machine.wait_for_text(r"(/build/source|hub.cpp|handler.cpp|void|virtual|const)") # awaiting log messages from content-hub
+        machine.send_key("ctrl-c")
+
+        machine.send_key("alt-f4")
+
+    # We want the ability to launch applications
+    with subtest("starter menu works"):
+        open_starter()
+        machine.screenshot("starter_opens")
+
+        # Just try the terminal again, we know that it should work
+        machine.send_chars("Terminal\n")
+        machine.wait_for_text(r"(${user}|machine)")
+        machine.send_key("alt-f4")
+
+    # We want support for X11 apps
+    with subtest("xwayland support works"):
+        open_starter()
+        machine.send_chars("Alacritty\n")
+        machine.wait_for_text(r"(${user}|machine)")
+        machine.screenshot("alacritty_opens")
+        machine.send_key("alt-f4")
+
+    # LSS provides DE settings
+    with subtest("system settings open"):
+        open_starter()
+        machine.send_chars("System Settings\n")
+        machine.wait_for_text("Rotation Lock")
+        machine.screenshot("settings_open")
+
+        # lomiri-system-settings has a separate VM test, only test Lomiri-specific content-hub functionalities here
+
+        # Make fullscreen, can't navigate to Background plugin via keyboard unless window has non-phone-like aspect ratio
+        toggle_maximise()
+
+        # Load Background plugin
+        machine.send_key("tab")
+        machine.send_key("tab")
+        machine.send_key("tab")
+        machine.send_key("tab")
+        machine.send_key("tab")
+        machine.send_key("tab")
+        machine.send_key("ret")
+        machine.wait_for_text("Background image")
+
+        # Try to load custom background
+        machine.send_key("shift-tab")
+        machine.send_key("shift-tab")
+        machine.send_key("shift-tab")
+        machine.send_key("shift-tab")
+        machine.send_key("shift-tab")
+        machine.send_key("shift-tab")
+        machine.send_key("ret")
+
+        # Peers should be loaded
+        machine.wait_for_text("Morph") # or Gallery, but Morph is already packaged
+        machine.screenshot("settings_content-hub_peers")
+
+        # Sadly, it doesn't seem possible to actually select a peer and attempt a content-hub data exchange with just the keyboard
+
+        machine.send_key("alt-f4")
+
+    # Morph is how we go online
+    with subtest("morph browser works"):
+        open_starter()
+        machine.send_chars("Morph\n")
+        machine.wait_for_text(r"(Bookmarks|address|site|visited any)")
+        machine.screenshot("morph_open")
+
+        # morph-browser has a separate VM test, there isn't anything new we could test here
+
+        machine.send_key("alt-f4")
+
+    # The ayatana indicators are an important part of the experience, and they hold the only graphical way of exiting the session.
+    # Reaching them via the intended way requires wayland mouse control, but ydotool lacks a module for its daemon:
+    # https://github.com/NixOS/nixpkgs/issues/183659
+    # Luckily, there's a test app that also displays their contents, but it's abit inconsistent. Hopefully this is *good-enough*.
+    with subtest("ayatana indicators work"):
+        open_starter()
+        machine.send_chars("Indicators\n")
+        machine.wait_for_text(r"(Indicators|Client|List|datetime|session)")
+        machine.screenshot("indicators_open")
+
+        # Element tab order within the indicator menus is not fully deterministic
+        # Only check that the indicators are listed & their items load
+
+        with subtest("ayatana indicator datetime works"):
+            # Select ayatana-indicator-datetime
+            machine.send_key("tab")
+            machine.send_key("ret")
+            machine.wait_for_text("Time and Date Settings")
+            machine.screenshot("indicators_timedate")
+
+        machine.send_key("shift-tab")
+        machine.send_key("ret")
+        machine.wait_for_text(r"(Indicators|Client|List|datetime|session)")
+
+        with subtest("ayatana indicator session works"):
+            # Select ayatana-indicator-session
+            machine.send_key("tab")
+            machine.send_key("down")
+            machine.send_key("ret")
+            machine.wait_for_text("Log Out")
+            machine.screenshot("indicators_session")
+  '';
+})
diff --git a/pkgs/desktops/lomiri/applications/lomiri/default.nix b/pkgs/desktops/lomiri/applications/lomiri/default.nix
index 8c9e215aff88..2c1b64bf0ca8 100644
--- a/pkgs/desktops/lomiri/applications/lomiri/default.nix
+++ b/pkgs/desktops/lomiri/applications/lomiri/default.nix
@@ -5,6 +5,7 @@
 , fetchpatch2
 , gitUpdater
 , linkFarm
+, nixosTests
 , ayatana-indicator-datetime
 , bash
 , biometryd
@@ -262,6 +263,7 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   passthru = {
+    tests.lomiri = nixosTests.lomiri;
     updateScript = gitUpdater { };
     greeter = linkFarm "lomiri-greeter" [{
       path = "${finalAttrs.finalPackage}/share/lightdm/greeters/lomiri-greeter.desktop";
diff --git a/pkgs/desktops/lomiri/data/lomiri-session/default.nix b/pkgs/desktops/lomiri/data/lomiri-session/default.nix
index 649e29a69670..c62e4ab572bd 100644
--- a/pkgs/desktops/lomiri/data/lomiri-session/default.nix
+++ b/pkgs/desktops/lomiri/data/lomiri-session/default.nix
@@ -4,6 +4,7 @@
 , fetchpatch
 , fetchpatch2
 , gitUpdater
+, nixosTests
 , bash
 , cmake
 , dbus
@@ -181,6 +182,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
       # not packaged/working yet
       # "lomiri-touch"
     ];
+    tests.lomiri = nixosTests.lomiri;
     updateScript = gitUpdater { };
   };