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/redis-exporter.nix

@@ -0,0 +1,34 @@
+{ lib, buildGoModule, fetchFromGitHub, nixosTests }:
+
+buildGoModule rec {
+  pname = "redis_exporter";
+  version = "1.37.0";
+
+  src = fetchFromGitHub {
+    owner = "oliver006";
+    repo = "redis_exporter";
+    rev = "v${version}";
+    sha256 = "sha256-S60/SwbMp6INf98MGc26zMZH8q7gBynyaT/ivN7o0rA=";
+  };
+
+  vendorSha256 = "sha256-u9FfKOD6kiCFTjwQ7LHE9WC4j2vPm0ZCluL8pC4aQIc=";
+
+  ldflags = [
+    "-X main.BuildVersion=${version}"
+    "-X main.BuildCommitSha=unknown"
+    "-X main.BuildDate=unknown"
+  ];
+
+  # needs a redis server
+  doCheck = false;
+
+  passthru.tests = { inherit (nixosTests.prometheus-exporters) redis; };
+
+  meta = with lib; {
+    description = "Prometheus exporter for Redis metrics";
+    inherit (src.meta) homepage;
+    license = licenses.mit;
+    maintainers = with maintainers; [ eskytthe srhb ];
+    platforms = platforms.unix;
+  };
+}