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/compilers/clean/chroot-build-support-do-not-rebuild-equal-timestamps.patch

@@ -0,0 +1,17 @@
+The clean command line compiler clm checks modules for freshness by comparing timestamps.
+However, in chroot builds all files installed have the same timestamp.  This leads to clm
+trying to rebuild the library modules distributed with the Clean install every time a user
+compiles any file.  This patch changes the freshness check to use less than instead of less
+than or equal to in order to avoid this.
+
+--- clean-upstream/src/tools/clm/clm.c	2010-12-10 06:12:17.000000000 -0430
++++ clean/src/tools/clm/clm.c	2010-12-25 10:29:09.840675925 -0430
+@@ -250,7 +250,7 @@
+ 		|| (t1.dwHighDateTime==t2.dwHighDateTime && (unsigned)(t1.dwLowDateTime)<=(unsigned)(t2.dwLowDateTime)))
+ #else
+ 	typedef unsigned long FileTime;
+-#	define FILE_TIME_LE(t1,t2) (t1<=t2)
++#	define FILE_TIME_LE(t1,t2) (t1<t2)
+ #endif
+ 
+ typedef struct project_node {

pkgs/development/compilers/clean/default.nix

@@ -0,0 +1,53 @@
+{ lib, stdenv, fetchurl }:
+
+stdenv.mkDerivation {
+  pname = "clean";
+  version = "3.0";
+
+  src =
+    if stdenv.hostPlatform.system == "i686-linux" then (fetchurl {
+      url = "https://ftp.cs.ru.nl/Clean/Clean30/linux/clean3.0_32_boot.tar.gz";
+      sha256 = "0cjxv3vqrg6pz3aicwfdz1zyhk0q650464j3qyl0wzaikh750010";
+    })
+    else if stdenv.hostPlatform.system == "x86_64-linux" then (fetchurl {
+        url = "https://ftp.cs.ru.nl/Clean/Clean30/linux/clean3.0_64_boot.tar.gz";
+        sha256 = "06k283y9adbi28f78k3m5ssg6py73qqkz3sm8dgxc89drv4krl2i";
+    })
+    else throw "Architecture not supported";
+
+  hardeningDisable = [ "format" "pic" ];
+
+  # clm uses timestamps of dcl, icl, abc and o files to decide what must be rebuild
+  # and for chroot builds all of the library files will have equal timestamps.  This
+  # makes clm try to rebuild the library modules (and fail due to absence of write permission
+  # on the Nix store) every time any file is compiled.
+  patches = [ ./chroot-build-support-do-not-rebuild-equal-timestamps.patch ];
+
+  preBuild = ''
+    substituteInPlace Makefile --replace 'INSTALL_DIR = $(CURRENTDIR)' 'INSTALL_DIR = '$out
+
+    substituteInPlace src/tools/clm/clm.c --replace '/usr/bin/gcc' $(type -p gcc)
+    substituteInPlace src/tools/clm/clm.c --replace '/usr/bin/as' $(type -p as)
+
+    cd src
+  '';
+
+  postBuild = ''
+    cd ..
+  '';
+
+  meta = {
+    description = "General purpose, state-of-the-art, pure and lazy functional programming language";
+    longDescription = ''
+      Clean is a general purpose, state-of-the-art, pure and lazy functional
+      programming language designed for making real-world applications. Some
+      of its most notable language features are uniqueness typing, dynamic typing,
+      and generic functions.
+    '';
+
+    homepage = "http://wiki.clean.cs.ru.nl/Clean";
+    license = lib.licenses.bsd2;
+    maintainers = [ lib.maintainers.erin ];
+    platforms = [ "i686-linux" "x86_64-linux" ];
+  };
+}