Add seyren, an alerting dashboard for Graphite

pkgs/servers/monitoring/seyren/default.nix

@@ -0,0 +1,28 @@
+{ stdenv, fetchurl, makeWrapper, jre }:
+
+stdenv.mkDerivation rec {
+  name = "seyren-${version}";
+  version = "1.0.0";
+
+  src = fetchurl {
+    url = "https://github.com/scobal/seyren/releases/download/${version}/seyren-${version}.jar";
+    sha256 = "14p97yzfyacvavfms8qs3q5515vpfkjlfvislbwrf7qa89xzz8x0";
+  };
+
+  phases = ["installPhase"];
+
+  buildInputs = [ makeWrapper jre src ];
+
+  installPhase = ''
+    ensureDir "$out"/bin
+    makeWrapper "${jre}/bin/java" "$out"/bin/seyren --add-flags "-jar $src"
+  '';
+
+  meta = with stdenv.lib; {
+    description = "An alerting dashboard for Graphite";
+    homepage = https://github.com/scobal/seyren;
+    license = licenses.asl20;
+    maintainers = [ maintainers.offline ];
+    platforms = platforms.all;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -6486,6 +6486,8 @@ let
 
   serfdom = callPackage ../servers/serfdom { };
 
+  seyren = callPackage ../servers/monitoring/seyren { };
+
   shishi = callPackage ../servers/shishi { };
 
   sipwitch = callPackage ../servers/sip/sipwitch { };