Update ipywidgets 8

.github/workflows/build.yml

@@ -47,7 +47,7 @@ jobs:
 
       - name: Install dependencies
         run: |
-          python -m pip install -U pip setuptools cookiecutter
+          python -m pip install -U pip setuptools cookiecutter jupyterlab jupyter_packaging==0.7.9 ipywidgets==8.0.0rc0
 
       - name: Test the extension
         run: |

README.md

@@ -65,7 +65,6 @@ notebook / lab frontend. For lab, this is done by the command:
 
 ```
 jupyter labextension develop --overwrite .
-yarn run build
 ```
 
 For classic notebook, you can run:
@@ -80,6 +79,12 @@ the `install` command every time that you rebuild your extension. For certain in
 you might also need another flag instead of `--sys-prefix`, but we won't cover the meaning
 of those flags here.
 
+Every time you make a change in the TypeScript code, you will need to rebuild it then refresh the browser page:
+
+```
+yarn run build
+```
+
 
 ### How to see your changes
 #### Typescript:

{{cookiecutter.github_project_name}}/.gitignore

@@ -146,7 +146,6 @@ $RECYCLE.BIN/
 
 **/node_modules/
 {{ cookiecutter.python_package_name  }}/nbextension/index.*
-{{ cookiecutter.python_package_name  }}/labextension/*.tgz
 
 # Coverage data
 # -------------

{{cookiecutter.github_project_name}}/examples/introduction.ipynb

@@ -34,11 +34,20 @@
    "source": [
     "assert w.value == 'Hello World'"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "w"
+   ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -52,9 +61,16 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.3"
+   "version": "3.10.4"
+  },
+  "widgets": {
+   "application/vnd.jupyter.widget-state+json": {
+    "state": {},
+    "version_major": 2,
+    "version_minor": 0
+   }
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }

{{cookiecutter.github_project_name}}/package.json

@@ -37,7 +37,6 @@
     "build:nbextension": "webpack",
     "clean": "yarn run clean:lib && yarn run clean:nbextension && yarn run clean:labextension",
     "clean:lib": "rimraf lib",
-    "clean:labextension": "rimraf {{ cookiecutter.python_package_name }}/labextension",
     "clean:nbextension": "rimraf {{ cookiecutter.python_package_name }}/nbextension/static/index.js",
     "lint": "eslint . --ext .ts,.tsx --fix",
     "lint:check": "eslint . --ext .ts,.tsx",
@@ -49,14 +48,14 @@
     "watch:labextension": "jupyter labextension watch ."
   },
   "dependencies": {
-    "@jupyter-widgets/base": "^1.1.10 || ^2.0.0 || ^3.0.0 || ^4.0.0"
+    "@jupyter-widgets/base": "^1.1.10 || ^2 || ^3 || ^4 || ^5 || ^6"
   },
   "devDependencies": {
     "@babel/core": "^7.5.0",
     "@babel/preset-env": "^7.5.0",
     "@jupyterlab/builder": "^3.0.0",
-    "@phosphor/application": "^1.6.0",
-    "@phosphor/widgets": "^1.6.0",
+    "@lumino/application": "^1.6.0",
+    "@lumino/widgets": "^1.6.0",
     "@types/jest": "^26.0.0",
     "@types/webpack-env": "^1.13.6",
     "@typescript-eslint/eslint-plugin": "^3.6.0",

{{cookiecutter.github_project_name}}/setup.py

@@ -54,7 +54,6 @@
     ('etc/jupyter/nbconfig/notebook.d', '.', '{{ cookiecutter.python_package_name }}.json'),
 ]
 
-
 cmdclass = create_cmdclass('jsdeps', package_data_spec=package_data_spec,
     data_files_spec=data_files_spec)
 npm_install = combine_commands(
@@ -65,36 +64,37 @@
 
 
 setup_args = dict(
-    name            = name,
-    description     = '{{ cookiecutter.project_short_description }}',
-    version         = version,
-    scripts         = glob(pjoin('scripts', '*')),
-    cmdclass        = cmdclass,
-    packages        = find_packages(),
-    author          = '{{ cookiecutter.author_name }}',
-    author_email    = '{{ cookiecutter.author_email }}',
-    url             = 'https://github.com/{{ cookiecutter.github_organization_name }}/{{ cookiecutter.github_project_name }}',
-    license         = 'BSD',
-    platforms       = "Linux, Mac OS X, Windows",
-    keywords        = ['Jupyter', 'Widgets', 'IPython'],
-    classifiers     = [
+    name=name,
+    description='{{ cookiecutter.project_short_description }}',
+    version=version,
+    scripts=glob(pjoin('scripts', '*')),
+    cmdclass=cmdclass,
+    packages=find_packages(),
+    author='{{ cookiecutter.author_name }}',
+    author_email='{{ cookiecutter.author_email }}',
+    url='https://github.com/{{ cookiecutter.github_organization_name }}/{{ cookiecutter.github_project_name }}',
+    license='BSD',
+    platforms="Linux, Mac OS X, Windows",
+    keywords=['Jupyter', 'Widgets', 'IPython'],
+    classifiers=[
         'Intended Audience :: Developers',
         'Intended Audience :: Science/Research',
         'License :: OSI Approved :: BSD License',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
         'Framework :: Jupyter',
     ],
-    include_package_data = True,
+    include_package_data=True,
     python_requires=">=3.6",
-    install_requires = [
-        'ipywidgets>=7.0.0',
+    install_requires=[
+        'ipywidgets>=7.0.0,<9',
     ],
-    extras_require = {
+    extras_require={
         'test': [
             'pytest>=4.6',
             'pytest-cov',
@@ -114,7 +114,7 @@
             'sphinx_rtd_theme',
         ],
     },
-    entry_points = {
+    entry_points={
     },
 )
 

{{cookiecutter.github_project_name}}/src/plugin.ts

@@ -1,9 +1,9 @@
 // Copyright (c) {{ cookiecutter.author_name }}
 // Distributed under the terms of the Modified BSD License.
 
-import { Application, IPlugin } from '@phosphor/application';
+import { Application, IPlugin } from '@lumino/application';
 
-import { Widget } from '@phosphor/widgets';
+import { Widget } from '@lumino/widgets';
 
 import { IJupyterWidgetRegistry } from '@jupyter-widgets/base';
 

{{cookiecutter.github_project_name}}/{{cookiecutter.python_package_name}}/__init__.py

@@ -4,8 +4,9 @@
 # Copyright (c) {{ cookiecutter.author_name }}.
 # Distributed under the terms of the Modified BSD License.
 
-from .example import ExampleWidget
-from ._version import __version__, version_info
+from .example import ExampleWidget  # noqa
+from ._version import __version__, version_info  # noqa
+
 
 def _jupyter_labextension_paths():
     """Called by Jupyter Lab Server to detect if it is a valid labextension and