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/bitcoin-utils-fork-minimal/default.nix

@@ -0,0 +1,45 @@
+{ lib
+, base58
+, buildPythonPackage
+, ecdsa
+, fetchPypi
+, sympy
+}:
+
+buildPythonPackage rec {
+  pname = "bitcoin-utils-fork-minimal";
+  version = "0.4.11.4";
+  format = "setuptools";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-n3tEQkl6KBAno4LY67lZme3TIvsm35VA2yyfWYuIE1c=";
+  };
+
+  propagatedBuildInputs = [
+    base58
+    ecdsa
+    sympy
+  ];
+
+  preConfigure = ''
+    substituteInPlace setup.py \
+      --replace "sympy==1.3" "sympy>=1.3" \
+      --replace "base58==2.1.0" "base58>=2.1.0" \
+      --replace "ecdsa==0.13.3" "ecdsa>=0.13.3"
+  '';
+
+  # Project doesn't ship tests
+  doCheck = false;
+
+  pythonImportsCheck = [
+    "bitcoinutils"
+  ];
+
+  meta = with lib; {
+    description = "Bitcoin utility functions";
+    homepage = "https://github.com/doersf/python-bitcoin-utils";
+    license = licenses.mit;
+    maintainers = with maintainers; [ fab ];
+  };
+}