mailman-hyperkitty: pin mistune at 2.0.5

{ python3, lib, overlay ? (_: _: {}) }:

{ python3, fetchPypi, lib, overlay ? (_: _: {}) }:

python3.override {

  packageOverrides = lib.composeExtensions

        [2] f931bc81d63f5cfda55ac73d754c87b3fd63b291

      */

      django = super.django_3;

      # https://gitlab.com/mailman/hyperkitty/-/merge_requests/541

      mistune = super.mistune.overridePythonAttrs (old: rec {

        version = "2.0.5";

        src = fetchPypi {

          inherit (old) pname;

          inherit version;

          hash = "sha256-AkYRPLJJLbh1xr5Wl0p8iTMzvybNkokchfYxUc7gnTQ=";

        };

      });

    })

    overlay;