chore(block-kit): prefer pyproject.toml over requirements.txt

.github/MAINTAINERS_GUIDE.md

@@ -26,7 +26,7 @@ $ cd bolt-python-examples
 $ cd block-kit       # Navigate to an example to change
 $ python -m venv .venv
 $ source .venv/bin/activate
-(.venv) $ pip install -r requirements.txt
+(.venv) $ pip install -e ".[dev]"
 (.venv) $ pip install /path/to/python-slack-sdk/dist/slack_sdk-*-py2.py3-none-any.whl --force-reinstall
 ```
 

.github/workflows/test.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Run tests
         run: |
           cd "${{ matrix.showcase }}"
-          pip install -r requirements.txt
+          pip install -e ".[dev]"
           ruff check
           ruff format --diff --check
           mypy ./**/*.py

block-kit/pyproject.toml

@@ -0,0 +1,33 @@
+[build-system]
+requires = ["setuptools", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "bolt-python-examples-block-kit"
+version = "0.1.0"
+description = "Block Kit examples for Bolt for Python"
+readme = "README.md"
+requires-python = ">=3.10"
+dependencies = [
+    "slack_sdk==3.41.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "mypy==2.0.0",
+    "pytest==9.0.3",
+    "ruff==0.15.12",
+]
+
+test = [
+    "pytest==9.0.3",
+]
+
+[tool.setuptools.packages.find]
+include = ["src*"]
+
+[tool.ruff]
+
+[tool.ruff.lint]
+
+[tool.ruff.format]