1 files changed, 28 insertions, 0 deletions
diff --git a/nixpkgs/nixos/tests/chrony-ptp.nix b/nixpkgs/nixos/tests/chrony-ptp.nix
new file mode 100644
index 000000000000..b2634a8cfc5c
--- /dev/null
+++ b/nixpkgs/nixos/tests/chrony-ptp.nix
@@ -0,0 +1,28 @@
+import ./make-test-python.nix ({ lib, ... }:
+{
+  name = "chrony-ptp";
+
+  meta = {
+    maintainers = with lib.maintainers; [ gkleen ];
+  };
+
+  nodes = {
+    qemuGuest = { lib, ... }: {
+      boot.kernelModules = [ "ptp_kvm" ];
+
+      services.chrony = {
+        enable = true;
+        extraConfig = ''
+          refclock PHC /dev/ptp_kvm poll 2 dpoll -2 offset 0 stratum 3
+        '';
+      };
+    };
+  };
+
+  testScript = ''
+    start_all()
+
+    qemuGuest.wait_for_unit('multi-user.target')
+    qemuGuest.succeed('systemctl is-active chronyd.service')
+  '';
+})