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/pyerfa/default.nix

@@ -0,0 +1,50 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, setuptools-scm
+, liberfa
+, packaging
+, numpy
+}:
+
+buildPythonPackage rec {
+  pname = "pyerfa";
+  format = "pyproject";
+  version = "2.0.0.1";
+
+  doCheck = false;
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "2fd4637ffe2c1e6ede7482c13f583ba7c73119d78bef90175448ce506a0ede30";
+  };
+
+  nativeBuildInputs = [
+    packaging
+    setuptools-scm
+  ];
+
+  propagatedBuildInputs = [
+    liberfa
+    numpy
+  ];
+
+  preBuild = ''
+    export PYERFA_USE_SYSTEM_LIBERFA=1
+  '';
+
+  meta = with lib; {
+    description = "Python bindings for ERFA routines";
+    longDescription = ''
+        PyERFA is the Python wrapper for the ERFA library (Essential Routines
+        for Fundamental Astronomy), a C library containing key algorithms for
+        astronomy, which is based on the SOFA library published by the
+        International Astronomical Union (IAU). All C routines are wrapped as
+        Numpy universal functions, so that they can be called with scalar or
+        array inputs.
+    '';
+    homepage = "https://github.com/liberfa/pyerfa";
+    license = licenses.bsd3;
+    maintainers = [ maintainers.rmcgibbo ];
+  };
+}