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/pyamg/default.nix

@@ -0,0 +1,49 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, numpy
+, scipy
+, pytest
+, pybind11
+, setuptools-scm
+}:
+
+buildPythonPackage rec {
+  pname = "pyamg";
+  version = "4.2.3";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-N608Hcr/JDXCq3yOw2lCrwcmxWPTUFm80Y6wdHP3GC4=";
+  };
+
+  nativeBuildInputs = [
+    setuptools-scm
+  ];
+
+  propagatedBuildInputs = [
+    numpy
+    scipy
+    pytest
+    pybind11
+  ];
+
+  # failed with "ModuleNotFoundError: No module named 'pyamg.amg_core.evolution_strength'"
+  doCheck = false;
+  # taken from https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=python-pyamg#n27
+  # checkPhase = ''
+  #   PYTHONPATH="$PWD/build/lib.linux-*:$PYTHONPATH" ${python3.interpreter} -c "import pyamg; pyamg.test()"
+  # '';
+
+  pythonImportsCheck = [
+    "pyamg"
+    "pyamg.amg_core.evolution_strength"
+  ];
+
+  meta = with lib; {
+    description = "Algebraic Multigrid Solvers in Python";
+    homepage = "https://github.com/pyamg/pyamg";
+    license = licenses.mit;
+    maintainers = [ maintainers.costrouc ];
+  };
+}