Let black and isort respect .gitignore

In order to let isort respect .gitignore, we need to specify this in the
tool.isort entry, in pyproject.toml.

For black, we don't need any extra tweaks. This is weird, since until a
few months ago black did not respect .gitignore. Maybe something has
changed in the meantime but if not, we should revert this change.

Makefile

@@ -4,19 +4,19 @@ JUNIT_FLAGS := --capture=sys -o junit_logging=all
 
 .PHONY: lint-black
 lint-black: ## check python source code formatting issues, with black
-	black --check --diff --exclude dev_scripts/envs --exclude $(LARGE_TEST_REPO_DIR) ./
+	black --check --diff ./
 
 .PHONY: lint-black-apply
 lint-black-apply: ## apply black's source code formatting suggestions
-	black --exclude dev_scripts/envs --exclude $(LARGE_TEST_REPO_DIR) ./
+	black ./
 
 .PHONY: lint-isort
 lint-isort: ## check imports are organized, with isort
-	isort --check-only --skip dev_scripts/envs --skip $(LARGE_TEST_REPO_DIR) ./
+	isort --check --diff ./
 
 .PHONY: lint-isort-apply
 lint-isort-apply: ## apply isort's imports organization suggestions
-	isort --skip dev_scripts/envs --skip $(LARGE_TEST_REPO_DIR) ./
+	isort ./
 
 MYPY_ARGS := --ignore-missing-imports \
 			 --disallow-incomplete-defs \

pyproject.toml

@@ -47,6 +47,9 @@ strip-ansi = "*"
 
 [tool.isort]
 profile = "black"
+skip = [".gitignore"]
+# This is necessary due to https://github.com/PyCQA/isort/issues/1835
+follow_links = false
 
 [build-system]
 requires = ["poetry>=1.1.4"]