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/block-io/default.nix

@@ -0,0 +1,51 @@
+{ lib
+, fetchPypi
+, bitcoin-utils-fork-minimal
+, buildPythonPackage
+, base58
+, pycryptodome
+, requests
+, setuptools
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "block-io";
+  version = "2.0.5";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "af70c3be444f2f2d07c0603cef547b51bbd9f4fbd4aadebd8f1e8ee73ccbc5e5";
+  };
+
+  propagatedBuildInputs = [
+    base58
+    bitcoin-utils-fork-minimal
+    pycryptodome
+    requests
+    setuptools
+  ];
+
+  preConfigure = ''
+    substituteInPlace setup.py \
+      --replace "base58==2.1.0" "base58>=2.1.0"
+  '';
+
+  # Tests needs a BlockIO API key to run properly
+  # https://github.com/BlockIo/block_io-python/blob/79006bc8974544b70a2d8e9f19c759941d32648e/test.py#L18
+  doCheck = false;
+
+  pythonImportsCheck = [
+    "block_io"
+  ];
+
+  meta = with lib; {
+    description = "Integrate Bitcoin, Dogecoin and Litecoin in your Python applications using block.io";
+    homepage = "https://github.com/BlockIo/block_io-python";
+    license = licenses.mit;
+    maintainers = with maintainers; [ nyanloutre ];
+  };
+}