Switching to using uv as PIP installer. Various fixes.

Makefile

@@ -1,7 +1,8 @@
 #!/usr/bin/make -f
 
 install-dev-requirements:
-	pip install -U uv hatch
+	curl -LsSf https://astral.sh/uv/install.sh | sh
+	uv venv && uv pip install hatch
 
 install-test-requirements:
 	uv pip install .[test]
@@ -12,22 +13,15 @@ services-up:
 services-down:
 	docker compose down --remove-orphans
 
-test-python:
-	@echo "Running Python tests"
-	wait-for-it --service httpbin.local:443 --service localhost:6379 --timeout 5 -- pytest tests/ || exit 1
-	@echo ""
-
-lint-python:
-	@echo "Linting Python files"
-	flake8 --ignore=E501,E731,W503 --exclude=.git,compat.py --per-file-ignores='mocket/async_mocket.py:E999' mocket
-	@echo ""
-
 setup: develop
 	pre-commit install
 
 develop: install-dev-requirements install-test-requirements
 
-test: lint-python test-python
+test:
+	@echo "Running Python tests"
+	export VIRTUAL_ENV=.venv; .venv/bin/wait-for-it --service httpbin.local:443 --service localhost:6379 --timeout 5 -- .venv/bin/pytest tests/ || exit 1
+	@echo ""
 
 safetest:
 	export SKIP_TRUE_REDIS=1; export SKIP_TRUE_HTTP=1; make test