uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/servers/monitoring/prometheus/openldap-exporter.nix

@@ -0,0 +1,30 @@
+{ lib, buildGoModule, fetchFromGitHub }:
+
+buildGoModule rec {
+  pname = "openldap_exporter";
+  version = "2.2.1";
+
+  src = fetchFromGitHub {
+    owner = "tomcz";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-ok2fTYz1oQiNdTPsssPb/VuFqny1i8nKTngSpKgCpC4=";
+  };
+
+  vendorSha256 = null;
+
+  ldflags = [
+    "-s"
+    "-w"
+    "-X github.com/tomcz/openldap_exporter.tag=v${version}"
+    "-X github.com/tomcz/openldap_exporter.commit=unknown"
+  ];
+
+
+  meta = with lib; {
+    homepage = "https://github.com/tomcz/openldap_exporter";
+    description = "Simple service that scrapes metrics from OpenLDAP and exports them via HTTP for Prometheus consumption";
+    license = licenses.mit;
+    maintainers = with maintainers; [ ma27 ];
+  };
+}