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/matrix-alertmanager/default.nix

@@ -0,0 +1,39 @@
+{ lib, callPackage, mkYarnPackage, fetchYarnDeps, fetchFromGitHub, nodejs }:
+
+mkYarnPackage rec {
+  pname = "matrix-alertmanager";
+  version = "0.5.0";
+
+  src = fetchFromGitHub {
+    owner = "jaywink";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "M3/8viRCRiVJGJSHidP6nG8cr8wOl9hMFY/gzdSRN+4=";
+  };
+
+  packageJSON = ./package.json;
+  yarnLock = ./yarn.lock;
+
+  offlineCache = fetchYarnDeps {
+    inherit yarnLock;
+    sha256 = lib.fileContents ./yarn-hash;
+  };
+
+  prePatch = ''
+    cp ${./package.json} ./package.json
+  '';
+  postInstall = ''
+    sed '1 s;^;#!${nodejs}/bin/node\n;' -i $out/libexec/matrix-alertmanager/node_modules/matrix-alertmanager/src/app.js
+    chmod +x $out/libexec/matrix-alertmanager/node_modules/matrix-alertmanager/src/app.js
+  '';
+
+  passthru.updateScript = callPackage ./update.nix {};
+
+  meta = with lib; {
+    description = "Bot to receive Alertmanager webhook events and forward them to chosen rooms";
+    homepage = "https://github.com/jaywink/matrix-alertmanager";
+    license = licenses.mit;
+    maintainers = with maintainers; [ yuka ];
+    platforms = platforms.all;
+  };
+}