Fix CI + remove Python 3.8 (#3989)

* Fixing CI

* Skip if exists

* Remove Python 3.8 classifiers

* Update ui-tests

* Update snapshots

Author: martinRenou

.github/workflows/packaging.yml

@@ -83,7 +83,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu, windows]
-        python: ['3.8', '3.13']
+        python: ['3.9', '3.13']
         dist: ['ipywidgets*.tar.gz']
         include:
           - python: '3.13'

.github/workflows/tests.yml

@@ -77,7 +77,7 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
 
     steps:
       - uses: actions/checkout@v4
@@ -144,7 +144,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install -U jupyterlab==4.0.0 jupyter-packaging~=0.10
+          python -m pip install -U jupyterlab jupyter-packaging~=0.10
 
       - name: Build and Install ipywidgets
         run: |

.yarnrc.yml

@@ -1,4 +1,5 @@
 nodeLinker: node-modules
+enableImmutableInstalls: false
 
 # prettier-ignore
 packageExtensions:

python/ipywidgets/setup.cfg

@@ -18,11 +18,11 @@ classifiers =
   License :: OSI Approved :: BSD License
   Programming Language :: Python
   Programming Language :: Python :: 3
-  Programming Language :: Python :: 3.7
-  Programming Language :: Python :: 3.8
   Programming Language :: Python :: 3.9
   Programming Language :: Python :: 3.10
   Programming Language :: Python :: 3.11
+  Programming Language :: Python :: 3.12
+  Programming Language :: Python :: 3.13
   Programming Language :: Python :: 3 :: Only
   Framework :: Jupyter
 

python/jupyterlab_widgets/pyproject.toml

@@ -1,17 +1,65 @@
-[build-system]
-requires = ["jupyter_packaging~=0.10,<2", "jupyterlab~=4.0"]
-build-backend = "jupyter_packaging.build_api"
-
-[tool.jupyter-packaging.options]
-skip-if-exists = ["labextension/package.json"]
-ensured-targets = ["labextension/package.json"]
+[project]
+name = "jupyterlab_widgets"
+description = "Jupyter interactive widgets for JupyterLab"
+readme = { file = "README.md", content-type = "text/markdown" }
+requires-python = ">=3.7"
+license = { file = "LICENSE" }
+authors = [
+    { name = "Jupyter Development Team", email = "jupyter@googlegroups.com" }
+]
+keywords = [
+    "Interactive", "Interpreter", "Shell", "Web", "notebook",
+    "widgets", "Jupyter", "JupyterLab", "JupyterLab3"
+]
+classifiers = [
+    "Intended Audience :: Developers",
+    "Intended Audience :: System Administrators",
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: BSD License",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3 :: Only",
+    "Framework :: Jupyter",
+    "Framework :: Jupyter :: JupyterLab",
+    "Framework :: Jupyter :: JupyterLab :: 3",
+    "Framework :: Jupyter :: JupyterLab :: Extensions",
+    "Framework :: Jupyter :: JupyterLab :: Extensions :: Prebuilt"
+]
+urls = { Homepage = "https://github.com/jupyter-widgets/ipywidgets" }
+dynamic = ["version"]
 
-[tool.jupyter-packaging.builder]
-factory = "jupyter_packaging.npm_builder"
+[tool.hatch.version]
+path = "jupyterlab_widgets/_version.py"
 
-[tool.jupyter-packaging.build-args]
-build_cmd = "build:prod"
-npm = ["jlpm"]
+[build-system]
+requires = ["hatchling>=1.5.0", "jupyterlab~=4.0"]
+build-backend = "hatchling.build"
 
 [tool.check-manifest]
 ignore = ["labextension/**", "yarn.lock", ".*", "package-lock.json"]
+
+[tool.hatch.build.hooks.jupyter-builder]
+ensured-targets = [
+    "labextension/package.json",
+]
+dependencies = [
+    "hatch-jupyter-builder>=0.8.1",
+]
+build-function = "hatch_jupyter_builder.npm_builder"
+skip-if-exists = ["labextension/static/style.js"]
+
+[tool.hatch.build.targets.wheel.shared-data]
+"install.json" = "share/jupyter/labextensions/@jupyter-widgets/jupyterlab-manager/install.json"
+"labextension" = "share/jupyter/labextensions/@jupyter-widgets/jupyterlab-manager"
+
+[tool.hatch.build.hooks.jupyter-builder.build-kwargs]
+path = "."
+build_cmd = "build:prod"
+npm = [
+    "jlpm",
+]

python/jupyterlab_widgets/setup.cfg

@@ -18,11 +18,11 @@ classifiers =
   License :: OSI Approved :: BSD License
   Programming Language :: Python
   Programming Language :: Python :: 3
-  Programming Language :: Python :: 3.7
-  Programming Language :: Python :: 3.8
   Programming Language :: Python :: 3.9
   Programming Language :: Python :: 3.10
   Programming Language :: Python :: 3.11
+  Programming Language :: Python :: 3.12
+  Programming Language :: Python :: 3.13
   Programming Language :: Python :: 3 :: Only
   Framework :: Jupyter