👷 Fix lint stage in workflow

.github/workflows/build.yml

@@ -10,6 +10,15 @@ on:
 env:
   FORCE_COLOR: "1" # Make tools pretty.
   PYTHONIOENCODING: utf-8
+  PIP_DISABLE_PIP_VERSION_CHECK: 1
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash -eux {0}
 
 jobs:
   build:
@@ -27,22 +36,19 @@ jobs:
 
       - name: Lint the extension 🚨
         run: |
-          set -eux
           jlpm
-          jlpm run lint:check
+          jlpm run eslint:check
 
       - name: Build the extension 🏗
         run: |
-          set -eux
-          python -m pip install .[test]
+          python -m pip install .
 
           jupyter labextension list
           jupyter labextension list 2>&1 | grep -ie "jupyterlab--accessible-themes.*OK"
           python -m jupyterlab.browser_check
 
       - name: Package the extension 🛠
         run: |
-          set -eux
 
           pip install build
           python -m build
@@ -72,7 +78,6 @@ jobs:
           name: extension-artifacts
       - name: Install and Test
         run: |
-          set -eux
           # Remove NodeJS, twice to take care of system and locally installed node versions.
           sudo rm -rf $(which node)
           sudo rm -rf $(which node)