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/applications/version-management/cvs2svn/default.nix

@@ -0,0 +1,40 @@
+{ lib, fetchurl, makeWrapper
+, pypy2Packages
+, cvs, subversion, git, breezy
+, installShellFiles
+}:
+
+pypy2Packages.buildPythonApplication  rec {
+  pname = "cvs2svn";
+  version = "2.5.0";
+
+  src = fetchurl {
+    url = "https://github.com/mhagger/cvs2svn/releases/download/${version}/${pname}-${version}.tar.gz";
+    sha256 = "1ska0z15sjhyfi860rjazz9ya1gxbf5c0h8dfqwz88h7fccd22b4";
+  };
+
+  nativeBuildInputs = [ makeWrapper installShellFiles ];
+
+  checkInputs = [ subversion git breezy ];
+
+  checkPhase = "${pypy2Packages.python.interpreter} run-tests.py";
+
+  doCheck = false; # Couldn't find node 'transaction...' in expected output tree
+
+  postInstall = ''
+    for i in bzr svn git; do
+      wrapProgram $out/bin/cvs2$i \
+          --prefix PATH : "${lib.makeBinPath [ cvs ]}"
+      $out/bin/cvs2$i --man > csv2$i.1
+      installManPage csv2$i.1
+    done
+  '';
+
+  meta = with lib; {
+    description = "A tool to convert CVS repositories to Subversion repositories";
+    homepage = "https://github.com/mhagger/cvs2svn";
+    maintainers = with maintainers; [ makefu viraptor ];
+    platforms = platforms.unix;
+    license = licenses.asl20;
+  };
+}