Enhance Jupytext for JupyterLab

binder/labconfig/default_setting_overrides.json

@@ -0,0 +1,8 @@
+{
+  "@jupyterlab/docmanager-extension:plugin": {
+    "defaultViewers": {
+      "markdown": "Jupytext Notebook",
+      "jupytext-md": "Jupytext Notebook"
+    }
+  }
+}

binder/postBuild

@@ -6,6 +6,9 @@ set -e
 # just add "jupytext" to your "binder/requirements.txt" instead.
 BUILD_JUPYTERLAB_EXTENSION=1 pip install .[myst]
 
+mkdir -p ${HOME}/.jupyter/labconfig
+cp binder/labconfig/* ${HOME}/.jupyter/labconfig
+
 # Create the notebook for our jupytext demo
 jupytext demo/get_started.md --to ipynb --update-metadata '{"jupytext":null}'
 

docs/index.md

@@ -29,6 +29,25 @@ When Jupytext is installed, `.py` and `.md` files have a notebook icon. And you
 [![](https://raw.githubusercontent.com/mwouts/jupytext-screenshots/master/JupytextDocumentation/TextNotebooks.png)](https://mybinder.org/v2/gh/mwouts/jupytext/master?filepath=demo)
 (click on the image above to try this on [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/mwouts/jupytext/master?filepath=demo))
 </details>
+<details>
+<summary>With a click on the text file in JupyterLab</summary>
+To do that, you will need to change the default viewer for text files supported by Jupytext by copy-pasting the following settings in `Document Manager` section:
+
+```json
+{
+  "defaultViewers": {
+    "markdown": "Jupytext Notebook",
+    "jupytext-md": "Jupytext Notebook"
+  }
+}
+```
+
+
+Here is a screencast of the steps to follow:
+
+[![](https://raw.githubusercontent.com/mwouts/jupytext/main/docs/jupyterlab_default_viewer.gif)](https://mybinder.org/v2/gh/mwouts/jupytext/master?urlpath=lab/tree/demo/get_started.ipynb)
+(click on the image above to try this on [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/mwouts/jupytext/master?urlpath=lab/tree/demo/get_started.ipynb))
+</details>
 <details>
   <summary>With a right click and <i>open with notebook</i> in Jupyter Lab</summary>
 

packages/labextension/package.json

@@ -59,8 +59,13 @@
   "dependencies": {
     "@jupyterlab/application": "^3.0.0",
     "@jupyterlab/apputils": "^3.0.0",
+    "@jupyterlab/codeeditor": "^3.0.0",
+    "@jupyterlab/docregistry": "^3.0.0",
     "@jupyterlab/nbformat": "^3.0.0",
-    "@jupyterlab/notebook": "^3.0.0"
+    "@jupyterlab/notebook": "^3.0.0",
+    "@jupyterlab/rendermime": "^3.0.0",
+    "@jupyterlab/translation": "^3.0.0",
+    "@jupyterlab/ui-components": "^3.0.0"
   },
   "devDependencies": {
     "@jupyterlab/builder": "^3.0.0",