New package: prometheus-haproxy-exporter

pkgs/servers/monitoring/prometheus/haproxy_exporter/default.nix

···
+{ stdenv, lib, goPackages, fetchFromGitHub, }:
+
+goPackages.buildGoPackage rec {
+  name = "prometheus-haproxy-exporter-0.4.0";
+  goPackagePath = "github.com/prometheus/haproxy_exporter";
+
+  src = fetchFromGitHub {
+    owner = "prometheus";
+    repo = "haproxy_exporter";
+    rev = "6ee6d1df3e68ed73df37c9794332b2594e4da45d";
+    sha256 = "0lbwv6jsdfjd9ihiky3lq7d5rkxqjh7xfaziw8i3w34a38japlpr";
+  };
+
+  buildInputs = [ goPackages.prometheus.client_golang ];
+
+  meta = with lib; {
+    description = "HAProxy Exporter for the Prometheus monitoring system";
+    homepage = https://github.com/prometheus/haproxy_exporter;
+    license = licenses.asl20;
+    maintainers = with maintainers; [ benley ];
+    platforms = platforms.unix;
+  };
+}

pkgs/top-level/all-packages.nix

···
   prometheus = callPackage ../servers/monitoring/prometheus { };
   prometheus-alertmanager =
     callPackage ../servers/monitoring/prometheus/alertmanager { };
+  prometheus-haproxy-exporter =
+    callPackage ../servers/monitoring/prometheus/haproxy_exporter { };
 
   psqlodbc = callPackage ../servers/sql/postgresql/psqlodbc { };