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/development/libraries/eigen/default.nix

@@ -0,0 +1,31 @@
+{ lib
+, stdenv
+, fetchFromGitLab
+, cmake
+}:
+
+stdenv.mkDerivation rec {
+  pname = "eigen";
+  version = "3.4.0";
+
+  src = fetchFromGitLab {
+    owner = "libeigen";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-1/4xMetKMDOgZgzz3WMxfHUEpmdAm52RqZvz6i0mLEw=";
+  };
+
+  patches = [
+    ./include-dir.patch
+  ];
+
+  nativeBuildInputs = [ cmake ];
+
+  meta = with lib; {
+    homepage = "https://eigen.tuxfamily.org";
+    description = "C++ template library for linear algebra: vectors, matrices, and related algorithms";
+    license = licenses.lgpl3Plus;
+    maintainers = with maintainers; [ sander raskin ];
+    platforms = platforms.unix;
+  };
+}