make sure uv is optional

Makefile

@@ -2,35 +2,59 @@
 
 PYTHON3?=python3
 
+UV := $(shell command -v uv 2> /dev/null)
+
 all: format lint test
 
 dev:  ## Install a development environment
-	# $(PYTHON3) -m pip install --user --upgrade -e .[dev]
+ifndef UV
+	$(PYTHON3) -m pip install --user --upgrade -e .[dev]
+else
 	uv pip install --upgrade -e .[dev]
+endif
 
 format:  ## Format sources
+ifndef UV
+	ruff format kalamine
+	ruff check --fix kalamine
+else
 	uv run ruff format kalamine
 	uv run ruff check --fix kalamine
+endif
 
 lint:  ## Lint sources
+ifndef UV
+	ruff format --check kalamine
+	ruff check kalamine
+	mypy kalamine
+else
 	uv run ruff format --check kalamine
 	uv run ruff check kalamine
 	uv run mypy kalamine
+endif
 
 test:  ## Run tests
-	# $(PYTHON3) -m kalamine.cli guide > docs/README.md
-	# $(PYTHON3) -m kalamine.cli build layouts/*.toml
-	# $(PYTHON3) -m pytest
+ifndef UV
+	$(PYTHON3) -m kalamine.cli guide > docs/README.md
+	$(PYTHON3) -m kalamine.cli build layouts/*.toml
+	$(PYTHON3) -m pytest
+else
 	uv run kalamine guide > docs/README.md
 	uv run kalamine build layouts/*.toml
 	uv run pytest
+endif
 
 publish: test  ## Publish package
 	rm -rf dist
-	# $(PYTHON3) -m build
+ifndef UV
+	$(PYTHON3) -m build
+	twine check dist/*
+	twine upload dist/*
+else
 	uv build
 	uv run twine check dist/*
 	uv run twine upload dist/*
+endif
 
 clean:  ## Clean sources
 	rm -rf build

pyproject.toml

@@ -34,7 +34,6 @@ dependencies = [
 
 [project.optional-dependencies]
 dev = [
-    "uv",
     "pytest",
     "lxml",
     "mypy>=1.13.0",