anchor.diff:  , pillow
   , pomegranate
   , pyfaidx
  +, python
  +, R
   }:
   
   buildPythonPackage rec {
     pname = "CNVkit";
     version = "0.9.7";
   
  -  src = fetchPypi {
  -    inherit pname version;
  -    sha256 = "d68adc0121e17c61a3aa28c0a9ba6526510a5a0df0f0a6eb1818bab71b7e927a";
  +  src = fetchFromGitHub {
  +    owner = "etal";
  +    repo = "cnvkit";
  +    rev = "v${version}";
  +    sha256 = "022zplgqil5l76vri647cyjx427vnbg5r2gw6lw712d2janvdjm7";
     };
  +
  +  patches = [
  +    # Fix: AttributeError: module 'pandas.io.common' has no attribute 'EmptyDataError'
  +    (fetchpatch {
  +      url = "https://github.com/etal/cnvkit/commit/392adfffedfa0415e635b72c5027835b0a8d7ab5.patch";
  +      sha256 = "0s0gwyy0hybmhc3jij2v9l44b6lkcmclii8bkwsazzj2kc24m2rh";
  +    })
  +  ];
   
     propagatedBuildInputs = [
       biopython
  
positive.code: { lib
  , fetchPypi
  , rPackages
  , rWrapper
  , buildPythonPackage
  
negative.code:       --replace "pandas >= 0.20.1, < 0.25.0" "pandas"
    '';
  
    checkInputs = [ R ];
  
    checkPhase = ''
      pushd test/
      ${python.interpreter} test_io.py
      ${python.interpreter} test_genome.py
      ${python.interpreter} test_cnvlib.py
      ${python.interpreter} test_commands.py
      ${python.interpreter} test_r.py
    '';
  
    meta = with lib; {
      homepage = "https://cnvkit.readthedocs.io";
  