We do not have packaged these optional test dependencies.

--- socksio-1.0.0/test-requirements.txt.orig
+++ socksio-1.0.0/test-requirements.txt
@@ -1,8 +1,6 @@
 black
 flake8
 flake8-bugbear
-flake8-comprehensions
-flit
 isort
 mypy
 nox