pythonPackages.devpi-common: fix meta evaluation

The tarball job now seems OK again :-)

+2 -2
+2 -2
pkgs/development/python-modules/devpi-common/default.nix
··· 1 - { pythonPackages }: 1 + { stdenv, pythonPackages }: 2 2 3 3 with pythonPackages;buildPythonPackage rec { 4 4 pname = "devpi-common"; ··· 17 17 py.test 18 18 ''; 19 19 20 - meta = { 20 + meta = with stdenv.lib; { 21 21 homepage = https://github.com/devpi/devpi; 22 22 description = "Utilities jointly used by devpi-server and devpi-client"; 23 23 license = licenses.mit;