Trac #32069: Upgrade jupyterlab to 3.3.x, add "sage -n nbclassic" and…

… "sage -n retrolab"

#30246 added jupyterlab 2.2.x as an optional package as part of Meta-
ticket #30399.

The 3.0 series has been out since December 2020.
https://pypi.org/project/jupyterlab/#history

Current as of Mar 2022 is 3.3.0. It still supports Python 3.7, as needed
for Sage 9.6.

It is now also possible to run the classic notebook on top of jupyterlab
- https://pypi.org/project/nbclassic/
(See also https://github.com/jupyterlab/retrolab#relation-to-other-
jupyter-frontends)

URL: https://trac.sagemath.org/32069
Reported by: mkoeppe
Ticket author(s): Matthias Koeppe
Reviewer(s): Eric Gourgoulhon

build/pkgs/ipympl/requirements.txt

@@ -0,0 +1 @@
+ipympl

build/pkgs/jupyter_packaging/dependencies

@@ -1,4 +1,4 @@
-$(PYTHON) packaging | $(PYTHON_TOOLCHAIN)
+$(PYTHON) | $(PYTHON_TOOLCHAIN)
 
 ----------
 All lines of this file are ignored except the first.

build/pkgs/jupyter_packaging/requirements.txt

@@ -0,0 +1 @@
+jupyter-packaging

build/pkgs/jupyterlab/dependencies

@@ -1,4 +1,4 @@
-$(PYTHON) vcversioner jupyter_core jupyter_client | $(PYTHON_TOOLCHAIN)
+$(PYTHON) vcversioner jupyter_core jupyter_client jinja2 tornado ipython packaging terminado traitlets nbconvert send2trash nbformat prometheus_client ipython_genutils argon2_cffi pyzmq idna requests jsonschema babel notebook | $(PYTHON_TOOLCHAIN)
 
 ----------
 All lines of this file are ignored except the first.

build/pkgs/jupyterlab/requirements.txt

@@ -1 +1 @@
-jupyterlab ~= 2.2.5
+jupyterlab ~= 3.3

build/pkgs/jupyterlab_widgets/dependencies

@@ -1,5 +1,4 @@
-jupyterlab nodejs tornado
+ipympl jupyterlab nodejs tornado $(PYTHON) | $(PYTHON_TOOLCHAIN) jupyter_packaging
 
 ----------
 All lines of this file are ignored except the first.
-It is copied by SAGE_ROOT/build/make/install into SAGE_ROOT/build/make/Makefile.

build/pkgs/jupyterlab_widgets/requirements.txt

@@ -0,0 +1 @@
+jupyterlab-widgets

build/pkgs/retrolab/SPKG.rst

@@ -0,0 +1,16 @@
+retrolab: JupyterLab Distribution with a retro look and feel
+============================================================
+
+Description
+-----------
+
+JupyterLab Distribution with a retro look and feel
+
+License
+-------
+
+Upstream Contact
+----------------
+
+https://pypi.org/project/retrolab/
+

build/pkgs/retrolab/dependencies

@@ -0,0 +1,4 @@
+$(PYTHON) jupyterlab | $(PYTHON_TOOLCHAIN)
+
+----------
+All lines of this file are ignored except the first.

build/pkgs/retrolab/requirements.txt

@@ -0,0 +1 @@
+retrolab ~= 0.3

build/pkgs/retrolab/type

@@ -0,0 +1 @@
+optional

src/bin/sage-notebook

@@ -72,6 +72,58 @@ class NotebookJupyterlab(object):
         main(argv)
 
 
+class NotebookNbclassic(object):
+    def print_banner(self):
+        banner()
+        print('Please wait while the Jupyterlab server starts...')
+
+    @classmethod
+    def print_help(cls):
+        cls(['help'])
+
+    def __init__(self, argv):
+        try:
+            from nbclassic.notebookapp import main
+        except ImportError:
+            import traceback
+            traceback.print_exc()
+            print("Jupyterlab is not installed (at least not in this Sage installation).")
+            print("You can install it by running")
+            print("  sage -i jupyterlab_widgets")
+            print("which includes support for interacts and the ability to download and")
+            print("install other Jupyterlab extensions. For a minimal installation, run")
+            print("  sage -i jupyterlab")
+            raise SystemExit(1)
+        self.print_banner()
+        main(argv)
+
+
+class NotebookRetrolab(object):
+    def print_banner(self):
+        banner()
+        print('Please wait while the Jupyterlab server starts...')
+
+    @classmethod
+    def print_help(cls):
+        cls(['help'])
+
+    def __init__(self, argv):
+        try:
+            from retrolab.app import main
+        except ImportError:
+            import traceback
+            traceback.print_exc()
+            print("Retrolab is not installed (at least not in this Sage installation).")
+            print("You can install it by running")
+            print("  sage -i jupyterlab_widgets retrolab")
+            print("which includes support for interacts and the ability to download and")
+            print("install other Jupyterlab extensions. For a minimal installation, run")
+            print("  sage -i retrolab")
+            raise SystemExit(1)
+        self.print_banner()
+        main(argv)
+
+
 class SageNBExport(NotebookJupyter):
 
     def print_banner(self):
@@ -135,9 +187,12 @@ notebook_launcher = {
     'ipython': NotebookJupyter,
     'jupyter': NotebookJupyter,
     'jupyterlab': NotebookJupyterlab,
+    'nbclassic': NotebookNbclassic,
+    'retrolab': NotebookRetrolab,
     'export': SageNBExport,
 }
 
+
 notebook_names = ', '.join(notebook_launcher.keys())