gnu: python-tornado: Update to 6.4.2.

* gnu/packages/python-web.scm (python-tornado): Absorb definition of
python-tornado-6.
(python-tornado-5): New variable, inherit from python-tornado.
(python-tornado-6): Deprecate variable.

* gnu/packages/jupyter.scm (python-jupyterlite-core)
* gnu/packages/jupyter.scm (python-pytest-jupyter)
* gnu/packages/jupyter.scm (python-voila)
* gnu/packages/python-xyz.scm (python-pypugjs)
* gnu/packages/python-xyz.scm (python-tenacity):
[native-inputs]: Remove python-tornado-6; add python-tornado.

* gnu/packages/machine-learning.scm (kaldi-gstreamer-server):
[inputs]: Remove python-tornado-6; add python-tornado.

* gnu/packages/bioinformatics.scm (python-bulkvis)
* gnu/packages/jupyter.scm (python-ipykernel)
* gnu/packages/jupyter.scm (python-jupyter-client)
* gnu/packages/jupyter.scm (python-jupyter-client-7)
* gnu/packages/jupyter.scm (python-jupyter-server)
* gnu/packages/jupyter.scm (python-nbclassic)
* gnu/packages/jupyter.scm (python-nbdime)
* gnu/packages/jupyter.scm (python-notebook)
* gnu/packages/jupyter.scm (python-terminado)
* gnu/packages/python-check.scm (python-pytest-tornasync)
* gnu/packages/python-science.scm (python-distributed)
* gnu/packages/python-xyz.scm (python-bokeh)
* gnu/packages/python-xyz.scm (python-ipyparallel-bootstrap)
* gnu/packages/python-xyz.scm (python-nbconvert)
[propagated-inputs]: Remove python-tornado-6; add python-tornado.

Change-Id: I437d73a0711c88e329666b6bc853f6332c277098

gnu/packages/bioinformatics.scm

@@ -2407,7 +2407,7 @@ from bokeh.util.dataclasses import entries\n"))
                                python-scikit-image
                                python-scipy
                                python-seaborn
-                               python-tornado-6
+                               python-tornado
                                python-tqdm
                                python-umap-learn))
       (native-inputs (list python-pytest python-setuptools python-wheel))

gnu/packages/jupyter.scm

@@ -164,7 +164,7 @@ simulation, statistical modeling, machine learning and much more.")
            python-packaging
            python-psutil
            python-pyzmq
-           python-tornado-6
+           python-tornado
            python-traitlets))
     (inputs (list python))              ;for cross compilation
     (native-inputs
@@ -291,7 +291,7 @@ Jupytext are:
                              python-pyzmq
                              python-send2trash
                              python-terminado
-                             python-tornado-6
+                             python-tornado
                              python-traitlets))
     (native-inputs (list python-nbval
                          python-jupyter-packaging
@@ -386,7 +386,7 @@ the namespace @code{/nbclassic/}.")
            python-pyzmq
            python-send2trash
            python-terminado
-           python-tornado-6
+           python-tornado
            python-traitlets))
     (native-inputs
      (list python-coverage
@@ -478,7 +478,7 @@ to Jupyter Server for their Python Web application backend.")
      (list python-dateutil
            python-jupyter-core
            python-pyzmq
-           python-tornado-6
+           python-tornado
            python-traitlets))
     (home-page "https://jupyter.org/")
     (synopsis "Jupyter protocol implementation and client libraries")
@@ -514,7 +514,7 @@ installing @code{kernelspec}s for use with Jupyter frontends.")
            python-jupyter-core
            python-nest-asyncio
            python-pyzmq
-           python-tornado-6
+           python-tornado
            python-traitlets))))
 
 ;; Bootstrap variant of jupyter-client, which breaks the loop between ipykernel
@@ -773,7 +773,7 @@ Messaging Protocol}.")
                          python-ipykernel
                          python-pytest
                          python-pytest-timeout
-                         python-tornado-6))
+                         python-tornado))
     (home-page "https://jupyter.org")
     (synopsis "Pytest plugin for testing Jupyter libraries and extensions.")
     (description
@@ -812,7 +812,7 @@ extensions.")
            python-pytest-timeout))
     (propagated-inputs
      (list python-ptyprocess
-           python-tornado-6))
+           python-tornado))
     (home-page "https://github.com/jupyter/terminado")
     (synopsis "Terminals served to term.js using Tornado websockets")
     (description "This package provides a Tornado websocket backend for the
@@ -1106,7 +1106,7 @@ JavaScript build steps.")
            python-pyzmq
            python-send2trash
            python-terminado
-           python-tornado-6
+           python-tornado
            python-traitlets
            python-websocket-client))
     (native-inputs
@@ -1188,7 +1188,7 @@ are interactive HTML widgets for Jupyter notebooks and the IPython kernel.")
                          python-pytest-console-scripts
                          python-pytest-cov
                          python-pytest-xdist
-                         python-tornado-6))
+                         python-tornado))
     (home-page "https://github.com/jupyterlite/jupyterlite")
     (synopsis "Core functionality for building JupyterLite websites")
     (description "The jupyterlite-core package provides the core functionality
@@ -1336,7 +1336,7 @@ It was formerly known as nbconvert's @code{ExecutePreprocessor.}")
            python-nbformat
            python-pygments
            python-requests
-           python-tornado-6))
+           python-tornado))
     (native-inputs
      (list git-minimal/pinned
            python-hatch-jupyter-builder
@@ -1876,7 +1876,7 @@ rich media output.")
            python-pandas
            python-pytest
            python-pytest-tornasync
-           python-tornado-6
+           python-tornado
            (origin
              (method url-fetch)
              (uri "https://unpkg.com/@jupyterlab/apputils@3.2.8/style/materialcolors.css")

gnu/packages/machine-learning.scm

@@ -3449,7 +3449,7 @@ exec ~a ~a~a \"$@\"~%"
              python-wrapper
              python-pygobject
              python-pyyaml
-             python-tornado-6))
+             python-tornado))
       (home-page "https://github.com/alumae/kaldi-gstreamer-server")
       (synopsis "Real-time full-duplex speech recognition server")
       (description "This is a real-time full-duplex speech recognition server,

gnu/packages/python-check.scm

@@ -4223,7 +4223,7 @@ simplify testing of asynchronous tornado applications.")
      (list python-pytest-bootstrap
            python-setuptools))
     (propagated-inputs
-     (list python-tornado-6))
+     (list python-tornado))
     (home-page "https://github.com/eukaryote/pytest-tornasync")
     (synopsis "Pytest plugin for testing Tornado code")
     (description

gnu/packages/python-science.scm

@@ -1044,7 +1044,7 @@ interoperability offered by HDF5.")
            python-sortedcontainers
            python-tblib
            python-toolz
-           python-tornado-6
+           python-tornado
            python-urllib3
            python-zict))
     (home-page "https://distributed.dask.org")

gnu/packages/python-web.scm

@@ -5347,8 +5347,37 @@ data.")
 
 (define-public python-tornado
   (package
-    ;; TODO: Try to refresh and check all dependents.
     (name "python-tornado")
+    (version "6.4.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "tornado" version))
+       (sha256
+        (base32 "02v2mlvr58xg0l0gh08nswl53z73wkf23sziggypk63ffjsdbflj"))))
+    (build-system pyproject-build-system)
+    (arguments
+     (list
+      #:test-flags
+      ;; AttributeError: 'TestIOStreamWebMixin' object has no attribute 'io_loop'
+      #~(list "--ignore=tornado/test/iostream_test.py")))
+    (native-inputs
+     (list python-certifi
+           python-pytest
+           python-setuptools))
+    (home-page "https://www.tornadoweb.org/")
+    (synopsis "Python web framework and asynchronous networking library")
+    (description
+     "Tornado is a Python web framework and asynchronous networking library,
+originally developed at FriendFeed.  By using non-blocking network I/O,
+Tornado can scale to tens of thousands of open connections, making it ideal
+for long polling, WebSockets, and other applications that require a long-lived
+connection to each user.")
+    (license license:asl2.0)))
+
+(define-public python-tornado-5
+  (package
+    (inherit python-tornado)
     (version "5.1.1")
     (source
      (origin
@@ -5388,47 +5417,10 @@ data.")
                        "--verbose=yes")))))))
     (native-inputs
      (list python-certifi
-           python-setuptools))
-    (home-page "https://www.tornadoweb.org/")
-    (synopsis "Python web framework and asynchronous networking library")
-    (description
-     "Tornado is a Python web framework and asynchronous networking library,
-originally developed at FriendFeed.  By using non-blocking network I/O,
-Tornado can scale to tens of thousands of open connections, making it ideal
-for long polling, WebSockets, and other applications that require a long-lived
-connection to each user.")
-    (license license:asl2.0)))
+           python-setuptools))))
 
-(define-public python-tornado-6
-  (package
-    (name "python-tornado")
-    (version "6.4.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (pypi-uri "tornado" version))
-       (sha256
-        (base32 "02v2mlvr58xg0l0gh08nswl53z73wkf23sziggypk63ffjsdbflj"))))
-    (build-system pyproject-build-system)
-    (arguments
-     (list
-      #:test-flags
-      ;; AttributeError: 'TestIOStreamWebMixin' object has no attribute 'io_loop'
-      #~(list "--ignore=tornado/test/iostream_test.py")))
-    (native-inputs
-     (list python-certifi
-           python-pytest
-           python-setuptools
-           python-wheel))
-    (home-page "https://www.tornadoweb.org/")
-    (synopsis "Python web framework and asynchronous networking library")
-    (description
-     "Tornado is a Python web framework and asynchronous networking library,
-originally developed at FriendFeed.  By using non-blocking network I/O,
-Tornado can scale to tens of thousands of open connections, making it ideal
-for long polling, WebSockets, and other applications that require a long-lived
-connection to each user.")
-    (license license:asl2.0)))
+;; XXX: Deprecated on <2026-01-23>.
+(define-deprecated/public-alias python-tornado-6 python-tornado)
 
 (define-public python-tornado-http-auth
   (package

gnu/packages/python-xyz.scm

@@ -8857,7 +8857,7 @@ templates.  A format string can be provided to control the output.")
                          python-mako
                          python-poetry-core
                          python-pytest
-                         python-tornado-6))
+                         python-tornado))
     (propagated-inputs (list python-charset-normalizer python-six))
     (home-page "https://github.com/kakulukia/pypugjs")
     (synopsis "Convert Pug source files into different template languages")
@@ -14437,7 +14437,7 @@ away.")
             python-jupyter-client-bootstrap
             python-psutil
             python-pyzmq
-            python-tornado-6
+            python-tornado
             python-tqdm
             python-traitlets))
      (home-page "https://ipython.org/")
@@ -18281,7 +18281,7 @@ time.")
            python-tinycss2
            python-traitlets
            ;; Required, even if [serve] is not used.
-           python-tornado-6
+           python-tornado
            ;; Required at runtime for `jupyter nbconvert --to=pdf`.
            texlive-adjustbox
            texlive-amsmath
@@ -19804,7 +19804,7 @@ enhancements to optimization and data fitting problems.")
            python-pandas
            python-pillow
            python-pyyaml
-           python-tornado-6
+           python-tornado
            python-xyzservices))
     (native-inputs
      (list python-beautifulsoup4
@@ -36635,7 +36635,7 @@ well as an event scheduler.")
      (list python-pytest
            python-setuptools
            python-setuptools-scm
-           python-tornado-6
+           python-tornado
            python-typeguard
            python-wheel))
     (home-page "https://github.com/jd/tenacity")