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/editors/ed/default.nix

@@ -0,0 +1,48 @@
+{ lib, stdenv, fetchurl, lzip
+}:
+
+# Note: this package is used for bootstrapping fetchurl, and thus
+# cannot use fetchpatch! All mutable patches (generated by GitHub or
+# cgit) that are needed here should be included directly in Nixpkgs as
+# files.
+
+stdenv.mkDerivation (rec {
+  pname = "ed";
+  version = "1.18";
+
+  src = fetchurl {
+    url = "mirror://gnu/ed/${pname}-${version}.tar.lz";
+    sha256 = "sha256-rKjvrZgAxYdySiC5eqj8R+a1pH34Fgb+q6gxsHRGK08=";
+  };
+
+  nativeBuildInputs = [ lzip ];
+
+  doCheck = true; # not cross;
+
+  meta = {
+    description = "An implementation of the standard Unix editor";
+
+    longDescription = ''
+      GNU ed is a line-oriented text editor.  It is used to create,
+      display, modify and otherwise manipulate text files, both
+      interactively and via shell scripts.  A restricted version of ed,
+      red, can only edit files in the current directory and cannot
+      execute shell commands.  Ed is the "standard" text editor in the
+      sense that it is the original editor for Unix, and thus widely
+      available.  For most purposes, however, it is superseded by
+      full-screen editors such as GNU Emacs or GNU Moe.
+    '';
+
+    license = lib.licenses.gpl3Plus;
+
+    homepage = "https://www.gnu.org/software/ed/";
+
+    maintainers = [ ];
+    platforms = lib.platforms.unix;
+  };
+} // lib.optionalAttrs (stdenv.hostPlatform != stdenv.buildPlatform) {
+  # This may be moved above during a stdenv rebuild.
+  preConfigure = ''
+    configureFlagsArray+=("CC=$CC")
+  '';
+})