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/audio/csound/csound-manual/default.nix

@@ -0,0 +1,44 @@
+{
+  lib, stdenv, fetchFromGitHub, docbook_xsl,
+  docbook_xml_dtd_45, python, pygments,
+  libxslt
+}:
+
+stdenv.mkDerivation {
+  pname = "csound-manual";
+  version = "unstable-2019-02-22";
+
+  src = fetchFromGitHub {
+    owner = "csound";
+    repo = "manual";
+    rev = "3b0bdc83f9245261b4b85a57c3ed636d5d924a4f";
+    sha256 = "074byjhaxraapyg54dxgg7hi1d4978aa9c1rmyi50p970nsxnacn";
+  };
+
+  prePatch = ''
+    substituteInPlace manual.xml \
+      --replace "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" \
+                "${docbook_xml_dtd_45}/xml/dtd/docbook/docbookx.dtd"
+  '';
+
+  nativeBuildInputs = [ libxslt.bin ];
+
+  buildInputs = [ docbook_xsl python pygments ];
+
+  buildPhase = ''
+    make XSL_BASE_PATH=${docbook_xsl}/share/xml/docbook-xsl html-dist
+  '';
+
+  installPhase = ''
+    mkdir -p $out/share/doc/csound
+    cp -r ./html $out/share/doc/csound
+  '';
+
+  meta = {
+    description = "The Csound Canonical Reference Manual";
+    homepage = "https://github.com/csound/manual";
+    license = lib.licenses.fdl12Plus;
+    maintainers = [ lib.maintainers.hlolli ];
+    platforms = lib.platforms.all;
+  };
+}