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/alertmanager-bot/default.nix

@@ -0,0 +1,34 @@
+{ lib, buildGoModule, fetchFromGitHub }:
+
+buildGoModule rec {
+  pname = "alertmanager-bot";
+  version = "0.4.3";
+
+  src = fetchFromGitHub {
+    owner = "metalmatze";
+    repo = pname;
+    rev = version;
+    sha256 = "1hjfkksqb675gabzjc221b33h2m4s6qsanmkm382d3fyzqj71dh9";
+  };
+
+  vendorSha256 = "1v0fgin8dn81b559zz4lqmrl7hikr46g4gb18sci4riql5qs1isj";
+
+  postPatch = ''
+    sed "s;/templates/default.tmpl;$out/share&;" -i cmd/alertmanager-bot/main.go
+  '';
+
+  ldflags = [
+    "-s" "-w" "-X main.Version=v${version}" "-X main.Revision=${src.rev}"
+  ];
+
+  postInstall = ''
+    install -Dm644 -t $out/share/templates $src/default.tmpl
+  '';
+
+  meta = with lib; {
+    description = "Bot for Prometheus' Alertmanager";
+    homepage = "https://github.com/metalmatze/alertmanager-bot";
+    license = licenses.mit;
+    maintainers = with maintainers; [ mmahut ];
+  };
+}