Seperate dev deps into lint and test

This is to avoid issue with pypy37 where black needs the
typed-ast module which won't build. We don't actually use black
in the pypy37 test environment so lets split things up

Author: nhairs

pyproject.toml

@@ -41,13 +41,14 @@ classifiers = [
 GitHub = "https://github.com/nhairs/python-json-logger"
 
 [project.optional-dependencies]
-dev = [
-    ## Formatting / Linting
+lint = [
     "validate-pyproject[all]",
     "black",
     "pylint",
     "mypy",
-    ## Testing
+]
+
+test = [
     "pytest",
 ]
 

tox.ini

@@ -17,20 +17,20 @@ python =
 
 [testenv]
 description = run unit tests
-extras = dev
+extras = test
 commands =
     pytest tests
     # python -m unittest discover
 
 [testenv:format]
 description = run formatters
-extras = dev
+extras = lint
 commands =
     black src tests
 
 [testenv:lint]
 description = run linters
-extras = dev
+extras = lint
 commands =
     validate-pyproject pyproject.toml
     black --check --diff src tests