1{ stdenv, buildPythonPackage, fetchPypi 2, nose, pyparsing, decorator, six }: 3 4buildPythonPackage rec { 5 pname = "PyContracts"; 6 version = "1.8.3"; 7 8 src = fetchPypi { 9 inherit pname version; 10 sha256 = "8e52c4ddbc015b56cc672b7c005c11f3df4fe407b832964099836fa3cccb8b9d"; 11 }; 12 13 buildInputs = [ nose ]; 14 propagatedBuildInputs = [ pyparsing decorator six ]; 15 16 meta = with stdenv.lib; { 17 description = "Allows to declare constraints on function parameters and return values"; 18 homepage = https://pypi.python.org/pypi/PyContracts; 19 license = licenses.lgpl2; 20 }; 21}