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/urweb/default.nix

@@ -0,0 +1,46 @@
+{ lib, stdenv, fetchurl, file, openssl, mlton
+, libmysqlclient, postgresql, sqlite, gcc, icu
+}:
+
+stdenv.mkDerivation rec {
+  pname = "urweb";
+  version = "20200209";
+
+  src = fetchurl {
+    url = "https://github.com/urweb/urweb/releases/download/${version}/${pname}-${version}.tar.gz";
+    sha256 = "0qh6wcxfk5kf735i5gqwnkdirnnmqhnnpkfz96gz144dgz2i0c5c";
+  };
+
+  buildInputs = [ openssl mlton libmysqlclient postgresql sqlite icu ];
+
+  prePatch = ''
+    sed -e 's@/usr/bin/file@${file}/bin/file@g' -i configure
+  '';
+
+  configureFlags = [ "--with-openssl=${openssl.dev}" ];
+
+  preConfigure = ''
+    export PGHEADER="${postgresql}/include/libpq-fe.h";
+    export MSHEADER="${libmysqlclient}/include/mysql/mysql.h";
+    export SQHEADER="${sqlite.dev}/include/sqlite3.h";
+    export ICU_INCLUDES="-I${icu.dev}/include";
+
+    export CC="${gcc}/bin/gcc";
+    export CCARGS="-I$out/include \
+                   -L${lib.getLib openssl}/lib \
+                   -L${libmysqlclient}/lib \
+                   -L${postgresql.lib}/lib \
+                   -L${sqlite.out}/lib";
+  '';
+
+  # Be sure to keep the statically linked libraries
+  dontDisableStatic = true;
+
+  meta = {
+    description = "Advanced purely-functional web programming language";
+    homepage    = "http://www.impredicative.com/ur/";
+    license     = lib.licenses.bsd3;
+    platforms   = lib.platforms.linux ++ lib.platforms.darwin;
+    maintainers = [ lib.maintainers.thoughtpolice lib.maintainers.sheganinans ];
+  };
+}