python36Packages.black: fix broken dependency

In PR #96456, black was upgraded from 19.10b0 to 20.8b1.  This new version of
black depends on the dataclasses module, but that was only introduced into the
standard library in Python 3.7; earlier versions of Python require the backport
package of the same name.  This commit addresses the missing dependency.
This commit is contained in:
Keshav Kini 2020-12-10 18:20:58 -08:00 committed by Frederik Rietdijk
parent 5103ebd8b8
commit fe5f82fd99

View file

@ -5,6 +5,7 @@
, appdirs
, attrs
, click
, dataclasses
, mypy-extensions
, pathspec
, regex
@ -59,7 +60,7 @@ buildPythonPackage rec {
toml
typed-ast
typing-extensions
];
] ++ lib.optional (pythonOlder "3.7") dataclasses;
meta = with lib; {
description = "The uncompromising Python code formatter";