JupyterLab-Blockly

git clone https://github.com/QuantStack/jupyterlab-blockly.git
cd jupyterlab-blockly
pre-commit install   # 多分いらない
pip install -e ".[dev]"
jupyter labextension develop . --overwrite
jlpm build
chmod -R a+rx .  # 必要に応じて

jupyter labextension list
pip uninstall jupyterlab-blockly   # pip でインストールした分を消す
jupyter labextension list          # 確認

pip uninstall jupyterlab_blockly

pip install build twine
python -m build

JupyterFrontEndPlugin
  |
BlocklyEditorFactory  --> BlocklyRegistry
  |(複数)
  +---------------+-------------------------+
  |               |                         |
BlocklyManager  BlocklyPanel(SplitPanel)  BlocklyEditor(DocumentWidget)
                  |
                BlocklyLayout(SplitLayout)