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/python-modules/validphys2/default.nix

@@ -0,0 +1,47 @@
+{ lib
+, buildPythonPackage
+, lhapdf
+, nnpdf
+, prompt-toolkit
+, reportengine
+, requests
+, seaborn
+, validobj
+}:
+
+buildPythonPackage rec {
+  pname = "validphys2";
+  version = "4.0";
+  format = "setuptools";
+
+  inherit (nnpdf) src;
+
+  prePatch = ''
+    cd validphys2
+  '';
+
+  postPatch = ''
+    substituteInPlace src/validphys/version.py \
+      --replace '= __give_git()' '= "${version}"'
+  '';
+
+  propagatedBuildInputs = [
+    lhapdf
+    nnpdf
+    prompt-toolkit
+    reportengine
+    requests
+    seaborn
+    validobj
+  ];
+
+  doCheck = false; # no tests
+  pythonImportsCheck = [ "validphys" ];
+
+  meta = with lib; {
+    description = "NNPDF analysis framework";
+    homepage = "https://data.nnpdf.science/validphys-docs/guide.html";
+    inherit (nnpdf.meta) license;
+    maintainers = with maintainers; [ veprbl ];
+  };
+}