pythonPackages.BTrees: fix evaluation; builds fine

Changed files
+1 -1
pkgs
development
python-modules
btrees
+1 -1
pkgs/development/python-modules/btrees/default.nix
···
-
{ stdenv, buildPythonPackage, persistent, zope_interface, transaction }:
buildPythonPackage rec {
pname = "BTrees";
···
+
{ stdenv, fetchPypi, buildPythonPackage, persistent, zope_interface, transaction }:
buildPythonPackage rec {
pname = "BTrees";