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/interpreters/tcl/generic.nix

@@ -0,0 +1,67 @@
+{ lib, stdenv, callPackage, makeSetupHook
+
+# Version specific stuff
+, release, version, src
+, ...
+}:
+
+let
+  baseInterp =
+    stdenv.mkDerivation {
+      pname = "tcl";
+      inherit version src;
+
+      outputs = [ "out" "man" ];
+
+      setOutputFlags = false;
+
+      preConfigure = ''
+        cd unix
+      '';
+
+      configureFlags = [
+        "--enable-threads"
+        # Note: using $out instead of $man to prevent a runtime dependency on $man.
+        "--mandir=${placeholder "out"}/share/man"
+        "--enable-man-symlinks"
+        # Don't install tzdata because NixOS already has a more up-to-date copy.
+        "--with-tzdata=no"
+        "tcl_cv_strtod_unbroken=ok"
+      ] ++ lib.optional stdenv.is64bit "--enable-64bit";
+
+      enableParallelBuilding = true;
+
+      postInstall = let
+        dllExtension = stdenv.hostPlatform.extensions.sharedLibrary;
+      in ''
+        make install-private-headers
+        ln -s $out/bin/tclsh${release} $out/bin/tclsh
+        ln -s $out/lib/libtcl${release}${dllExtension} $out/lib/libtcl${dllExtension}
+      '';
+
+      meta = with lib; {
+        description = "The Tcl scripting language";
+        homepage = "https://www.tcl.tk/";
+        license = licenses.tcltk;
+        platforms = platforms.all;
+        maintainers = with maintainers; [ agbrooks ];
+      };
+
+      passthru = rec {
+        inherit release version;
+        libPrefix = "tcl${release}";
+        libdir = "lib/${libPrefix}";
+        tclPackageHook = callPackage ({ buildPackages }: makeSetupHook {
+          name = "tcl-package-hook";
+          deps = [ buildPackages.makeWrapper ];
+        } ./tcl-package-hook.sh) {};
+      };
+    };
+
+  mkTclDerivation = callPackage ./mk-tcl-derivation.nix { tcl = baseInterp; };
+
+in baseInterp.overrideAttrs (self: {
+     passthru = self.passthru // {
+       inherit mkTclDerivation;
+     };
+})