Install jupyterlab to obtain jlpm

Author: fcollonval

.github/workflows/publish.yml

@@ -4,20 +4,27 @@ on:
   release:
     types: [published]
 
-
 jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
-    - name: Install node
-      uses: actions/setup-node@v1
-      with:
-        node-version: '12.x'
-        registry-url: 'https://registry.npmjs.org'
-    - name: Build and publish NPM package
-      run: |
-        npm install
-        npm publish
-      env:
-        NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+      - uses: actions/checkout@v2
+      - name: Install node
+        uses: actions/setup-node@v1
+        with:
+          node-version: '12.x'
+          registry-url: 'https://registry.npmjs.org'
+      - name: Install Python
+        uses: actions/setup-python@v1
+        with:
+          python-version: '3.x'
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install jupyterlab~=2.0
+      - name: Build and publish NPM package
+        run: |
+          npm install
+          npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}