Init submodules, update binder setup

.github/workflows/build.yml

@@ -13,17 +13,21 @@ jobs:
     steps:
     - name: Checkout
       uses: actions/checkout@v3
+      with:
+        submodules: true
 
     - name: Base Setup
       uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
 
     - name: Install dependencies
       run: |
+        python -m pip install -U "jupyterlab>=4.0.0,<5"
+        python -m pip install hatch build
         cd jupyterlab
-        python -m pip install -e .
+        # see https://github.com/jupyterlab/hatch-jupyter-builder/issues/131
+        # python -m pip install -e .
         jlpm install
         jlpm build
-        # python -m pip install -U "jupyterlab>=4.0.0,<5"
 
     - name: Lint the extension
       run: |

binder/postBuild

@@ -11,7 +11,7 @@
 import subprocess
 import sys
 from pathlib import Path
-
+import os
 
 ROOT = Path.cwd()
 
@@ -26,6 +26,15 @@ def _(*args, **kwargs):
         print("\nERROR", return_code, " ".join(args))
         sys.exit(return_code)
 
+_("git", "submodule", "update", "--init")
+
+cwd = os.getcwd()
+os.chdir('jupyterlab')
+_("python", "-m", "pip", "install", "-e", ".")
+_("jlpm", "install")
+_("jlpm", "build")
+os.chdir(cwd)
+
 # verify the environment is self-consistent before even starting
 _(sys.executable, "-m", "pip", "check")