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/os-specific/linux/earlyoom/default.nix

@@ -0,0 +1,37 @@
+{ lib, stdenv, fetchFromGitHub, pandoc, installShellFiles, withManpage ? false, nixosTests }:
+
+stdenv.mkDerivation rec {
+  pname = "earlyoom";
+  version = "1.7";
+
+  src = fetchFromGitHub {
+    owner = "rfjakob";
+    repo = "earlyoom";
+    rev = "v${version}";
+    sha256 = "sha256-8YcT1TTlAet7F1U9Ginda4IApNqkudegOXqm8rnRGfc=";
+  };
+
+  nativeBuildInputs = lib.optionals withManpage [ pandoc installShellFiles ];
+
+  patches = [ ./fix-dbus-path.patch ];
+
+  makeFlags = [ "VERSION=${version}" ];
+
+  installPhase = ''
+    install -D earlyoom $out/bin/earlyoom
+  '' + lib.optionalString withManpage ''
+    installManPage earlyoom.1
+  '';
+
+  passthru.tests = {
+    inherit (nixosTests) earlyoom;
+  };
+
+  meta = with lib; {
+    description = "Early OOM Daemon for Linux";
+    homepage = "https://github.com/rfjakob/earlyoom";
+    license = licenses.mit;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [];
+  };
+}

pkgs/os-specific/linux/earlyoom/fix-dbus-path.patch

@@ -0,0 +1,11 @@
+--- a/kill.c
++++ b/kill.c
+@@ -55,7 +55,7 @@ static void notify(const char* summary, const char* body)
+     }
+     // Complete command line looks like this:
+     // dbus-send --system / net.nuetzlich.SystemNotifications.Notify 'string:summary text' 'string:and body text'
+-    execl("/usr/bin/dbus-send", "dbus-send", "--system", "/", "net.nuetzlich.SystemNotifications.Notify",
++    execlp("dbus-send", "dbus-send", "--system", "/", "net.nuetzlich.SystemNotifications.Notify",
+         summary2, body2, NULL);
+     warn("notify: exec failed: %s\n", strerror(errno));
+     exit(1);