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/libraries/languagemachines/test.nix

@@ -0,0 +1,25 @@
+{ runCommand
+, languageMachines
+}:
+
+runCommand "frog-test" {} ''
+  ${languageMachines.frog}/bin/frog >$out <<EOF
+  Dit is een test
+
+  EOF
+  echo "Frog output:"
+  cat $out
+
+  expected () {
+    echo "Test expectation failed: $@"
+    exit 1
+  }
+
+  lines="$(wc -l $out | awk '{print $1}')"
+  test 5 = $lines || expected "Five lines of output"
+  grep "is" $out | grep "zijn" >/dev/null || expected "Stemming works"
+  grep "een" $out | grep "onbep" >/dev/null || expected "Tagging works"
+
+  deps="$(echo $(awk 'BEGIN { FS = "\t*" } ; {print $1 " -> " $9 "; "}' <$out))"
+  test "1 -> 2; 2 -> 0; 3 -> 4; 4 -> 2; -> ;" = "$deps" || expected "Dependency parsing works"
+''