Use conda to install Jupyter Notebook

.github/workflows/run-tests.yml

@@ -65,19 +65,16 @@ jobs:
         shell: bash -l {0}
         run: |
           python .github/scripts/generate-without-spyder.py
-          mamba install --file requirements/without-spyder.txt -y
+          mamba install -c conda-forge/label/notebook_beta -c conda-forge/label/jupyterlab_beta --file requirements/without-spyder.txt -y
       - name: Install plugin dependencies
         if: matrix.SPYDER_SOURCE == 'conda'
         shell: bash -l {0}
-        run: mamba install --file requirements/conda.txt -y
+        run: mamba install -c conda-forge/label/notebook_beta -c conda-forge/label/jupyterlab_beta --file requirements/conda.txt -y
       - name: Install test dependencies
         shell: bash -l {0}
         run: |
           mamba install nomkl -y -q
           mamba install --file requirements/tests.txt -y
-      - name: Install Jupyter Notebook using pip
-        shell: bash -l {0}
-        run: python -m pip install notebook==7.0.0b0 jupyterlab==4.0.0b1 --pre
       - name: Build JavaScript
         shell: bash -l {0}
         run: |

CONTRIBUTING.md

@@ -55,17 +55,15 @@ $ conda install --file requirements/conda.txt
 ```
 
 **For version 0.5.0-alpha of the plugin:** The plugin is based on
-Jupyter Notebook 7, which is only available as an alpha release on
-PyPI. So in addition, we need to install it with pip usig the
+Jupyter Notebook 7, which at the moment is only available as a beta
+release. While that is the case, you should explicitly allow the
+installation of beta releases of Jupyter Lab and Notebook as in the
 following command:
 
 ```bash
-$ python -m pip install notebook --pre
+$ conda install -c conda-forge/label/notebook_beta -c conda-forge/label/jupyterlab_beta --file requirements/conda.txt
 ```
 
-Cross your fingers that the mixing of pip and conda does not
-cause any problems!
-
 ### Building the notebook server
 
 The Spyder notebook plugin includes a server which serves notebooks as HTML

requirements/conda.txt

@@ -2,7 +2,7 @@ spyder >=5.4.3,<6
 jupyter_core
 jupyter_server
 nbformat
-# notebook >=7 - can only be installed with pip
+notebook >=7.0.0b0
 qtpy
 qdarkstyle
 requests

setup.py

@@ -73,7 +73,7 @@ def run(self):
 REQUIREMENTS = [
     'spyder>=5.4.3,<6',
     'nbformat',
-    'notebook>=7',
+    'notebook>=7.0.0b0',
     'qtpy',
     'qdarkstyle',
     'requests',