Add post for JupyterLab 4.0.0 rc

.github/workflows/test.yml

@@ -0,0 +1,35 @@
+name: Testing the GitHub Pages publication
+
+on:
+  push:
+  pull_request:
+      branches:
+        - main
+
+jobs:
+  jekyll:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      # Use GitHub Actions' cache to shorten build times and decrease load on servers
+      - uses: actions/cache@v3
+        with:
+          path: vendor/bundle
+          key: ${{ runner.os }}-gems-${{ hashFiles('**/Gemfile') }}
+          restore-keys: |
+            ${{ runner.os }}-gems-
+
+      # Standard usage
+      - uses: helaili/jekyll-action@v2
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          build_only: true
+          build_dir: _site
+
+      - name: Upload Blog
+        uses: actions/upload-artifact@v3
+        with:
+          name: jupyterlab-assets-website
+          path: |
+            _site

Gemfile

@@ -0,0 +1,32 @@
+source 'https://rubygems.org'
+
+gem 'jekyll', '~> 3.9.3'
+gem 'coderay', '~> 1.1.0'
+
+group :jekyll_plugins do
+  gem 'html-pipeline', '~> 2.14.3'
+  gem 'jekyll-avatar', '~> 0.7.0'
+  gem 'jekyll-coffeescript', '~> 1.1.1'
+  gem 'jekyll-commonmark-ghpages', '~> 0.4.0'
+  gem 'jekyll-default-layout', '~> 0.1.4'
+  gem 'jekyll-feed', '~> 0.15.1'
+  gem 'jekyll-include-cache', '~> 0.2.1'
+  gem 'jekyll-mentions', '~> 1.6.0'
+  gem 'jekyll-optional-front-matter', '~> 0.3.2'
+  gem 'jekyll-paginate', '~> 1.1.0'
+  gem 'jekyll-readme-index', '~> 0.3.0'
+  gem 'jekyll-redirect-from', '~> 0.16.0'
+  gem 'jekyll-relative-links', '~> 0.6.1'
+  gem 'jekyll-sass-converter', '~> 1.5.2'
+  gem 'jekyll-seo-tag', '~> 2.8.0'
+  gem 'jekyll-sitemap', '~> 1.4.0'
+  gem 'jekyll-swiss', '~> 1.0.0'
+  gem 'jekyll-titles-from-headings', '~> 0.5.3'
+  gem 'jemoji', '~> 0.12.0'
+  gem 'kramdown-parser-gfm', '~> 1.1.0'
+  gem 'kramdown', '~> 2.3.2'
+  gem 'liquid', '~> 4.0.4'
+  gem 'minima', '~> 2.5.1'
+  gem 'safe_yaml', '~> 1.0.5'
+  gem 'sass', '~> 3.7.4'
+end

_config.yml

@@ -8,5 +8,7 @@ baseurl: /assets
 exclude:
   - src
   - README.md
+  # Locally installed dependencies in CI test job
+  - vendor/
 feed:
   posts_limit: 1

_posts/2023-04-11-JupyterLab-4-RC.md

@@ -0,0 +1,38 @@
+---
+layout: post
+title: "JupyterLab 4.0.0 Release Candidate is out"
+date: 2023-04-11 14:00:00 -0000
+categories: posts
+excerpt: "The next major version of JupyterLab is coming soon; check it out."
+---
+
+# JupyterLab 4.0.0 Release Candidate is out
+
+The next major version of JupyterLab is coming soon (ETA mid-May). We have
+started to publish release candidate version that you can try using:
+
+With `pip`
+
+```sh
+pip install --pre "jupyterlab>=4.0.0rc0"
+```
+
+Or with `conda`
+
+```sh
+conda install -c "conda-forge/label/jupyterlab_rc" jupyterlab
+```
+
+## What is new?
+
+Have a look at the [major highlights](https://hackmd.io/@fcollonval/HJiUph5bn).
+The detailed changes can be found on the [GitHub release page](https://github.com/jupyterlab/jupyterlab/releases/tag/v4.0.0b1).
+
+## How can you help?
+
+There are many ways, you can help making this release better:
+
+- [Report issues](https://github.com/jupyterlab/jupyterlab/issues/new/choose).
+- [Help translating](https://crowdin.com/project/jupyterlab) - required registration to the Crowdin platform.
+- [Contribute to fix issues]().
+- [For developer] start porting your extension. Please look at the [migration guide](https://jupyterlab.readthedocs.io/en/latest/extension/extension_migration.html#jupyterlab-3-x-to-4-x). You could also look at the PR migrating [the extension examples](https://github.com/jupyterlab/extension-examples/pull/225).