nqptp: copy systemd service and add capability (#350818)

Author: adamcstephens

pkgs/tools/networking/nqptp/default.nix

@@ -18,8 +18,9 @@ stdenv.mkDerivation rec {
   };
 
   patches = [
-    # this patch should be removed when > 1.2.4
+    # these patches should be removed when > 1.2.4
     ./remove-setcap.patch
+    ./systemd-service-capability.patch
   ];
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
@@ -28,6 +29,11 @@ stdenv.mkDerivation rec {
     ignoredVersions = ".*(-dev|d0)";
   };
 
+  postInstall = ''
+    mkdir -p $out/lib/systemd/system
+    cp nqptp.service $out/lib/systemd/system
+  '';
+
   meta = {
     homepage = "https://github.com/mikebrady/nqptp";
     description = "Daemon and companion application to Shairport Sync that monitors timing data from any PTP clocks";

pkgs/tools/networking/nqptp/systemd-service-capability.patch

@@ -0,0 +1,12 @@
+diff --git a/nqptp.service.in b/nqptp.service.in
+index 6f1eb0c..53e6a2e 100644
+--- a/nqptp.service.in
++++ b/nqptp.service.in
+@@ -8,6 +8,7 @@ Before=shairport-sync.service
+ ExecStart=@prefix@/bin/nqptp
+ User=nqptp
+ Group=nqptp
++AmbientCapabilities=CAP_NET_BIND_SERVICE
+ 
+ [Install]
+ WantedBy=multi-user.target