sagemathgh-38504: Demote `jmol` to optional
    
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- Resolves sagemath#31027

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### ⌛ Dependencies

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URL: sagemath#38504
Reported by: Matthias Köppe
Reviewer(s): Nathan Dunfield

Author: Release Manager

build/pkgs/jmol/type

@@ -1 +1 @@
-standard
+optional

build/pkgs/sagemath_doc_html/dependencies

@@ -1,4 +1,4 @@
-sagelib sphinx sphinx_copybutton sphinx_inline_tabs pplpy_doc | $(SAGERUNTIME) maxima networkx scipy sympy matplotlib pillow mathjax mpmath ipykernel jupyter_client conway_polynomials tachyon jmol ipywidgets sage_docbuild elliptic_curves furo fpylll graphs
+sagelib sphinx sphinx_copybutton sphinx_inline_tabs pplpy_doc | $(SAGERUNTIME) maxima networkx scipy sympy matplotlib pillow mathjax mpmath ipykernel jupyter_client conway_polynomials tachyon ipywidgets sage_docbuild elliptic_curves furo fpylll graphs
 
 # Building the documentation has many dependencies, because all
 # documented modules are imported and because we use matplotlib to

build/pkgs/sagetex/dependencies_check

@@ -1,4 +1,4 @@
-$(SAGERUNTIME) sympy elliptic_curves jmol
+$(SAGERUNTIME) sympy elliptic_curves
 
 To build SageTeX, you just need Python, but to test (SAGE_CHECK=yes)
 SageTeX, you actually need to run Sage, produce plots,...

src/doc/en/faq/faq-usage.rst

@@ -479,35 +479,6 @@ How do I run sage in daemon mode, i.e. as a service?
 There are several possibilities. Use ``screen``, ``nohup`` or ``disown``.
 
 
-The show command for plotting 3-D objects does not work.
-""""""""""""""""""""""""""""""""""""""""""""""""""""""""
-
-The default live 3-D plotting for Sage 6.4+ uses
-`Jmol/JSmol <http://jmol.sourceforge.net>`_
-for viewing. From the command line the Jmol Java application is used,
-and for in browser viewing either pure javascript or a Java applet
-is used.  By default in browsers pure javascript is used to avoid
-the problems with some browsers that do not support java applet
-plugins (namely Chrome).  On each browser worksheet there is a
-checkbox which must be checked before a 3-D plot is generated if
-the user wants to use the Java applet (the applet is a little faster
-with complex plots).
-
-The most likely reason for a malfunction is that you do not have
-a Java Run Time Environment (JRE) installed or you have one older than
-version 1.7.  If things work from the command line another possibility
-is that your browser does not have the proper plugin to support Java
-applets (at present, 2014, plugins do not work with most versions of
-Chrome).  Make sure you have installed either the IcedTea browser
-plugin (for linux see your package manager), see:
-`IcedTea <http://icedtea.classpath.org/wiki/IcedTea-Web>`_,
-or the Oracle Java plugin see:
-`Java <https://java.com/en/download/help/index_installing.xml>`_.
-
-If you are using a Sage server over the web and even javascript rendering
-does not work, you may have a problem with your browser's javascript
-engine or have it turned off.
-
 May I use Sage tools in a commercial environment?
 """""""""""""""""""""""""""""""""""""""""""""""""
 

src/doc/en/prep/Symbolics-and-Basic-Plotting.rst

@@ -384,11 +384,6 @@ Below, you can experiment with several of the plotting options.
 Basic 3D Plotting
 -----------------
 
-There are several mechanisms for viewing three\-dimensional plots in
-Sage, but we will stick to the default option in the notebook interface,
-which is via javascript applets from the program `Jmol/JSmol
-<http://jmol.sourceforge.net/>`_ .
-
 Plotting a 3D plot is similar to plotting a 2D plot, but we need to
 specify ranges for two variables instead of one.
 

src/doc/it/faq/faq-usage.rst

@@ -469,37 +469,6 @@ Ci sono parecchie possibilità. Puoi usare i programmi a riga di comando
 ``screen``, ``nohup`` o ``disown``.
 
 
-Il comando show (mostra) per la visualizzazione di oggetti 3D non funziona.
-"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
-
-La visualizzazione 3D in tempo reale per Sage dalla versione 6.4 in
-avanti usa il pacchetto `Jmol/JSmol <http://jmol.sourceforge.net>`_.
-Dalla linea di comando viene utilizzata l'applicazione Java Jmol,
-mentre per la visualizzazione dal browser viene usato puro javascript
-oppure una Java applet. In genere nei browser è usato javascript puro
-per evitare problemi con quei browser che non supportano i plugin per
-le applet Java (ad esempio Chrome). In ogni worksheet su browser c'è
-una casella da spuntare prima di generare una vista tridimensionale
-qualora l'utente voglia usare l'applet Java (essa è un po' più veloce
-con viste complicate).
-
-La ragione più probabile di un malfunzionamento è che non hai
-installato l'ambiente runtime di Java (JRE) o che è più vecchio della
-versione 1.7. Se le cose funzionano dalla riga di comando,
-un'altra possibilità è che il tuo browser non abbia il plugin giusto
-per supportare le Java applet (al momento, nel 2014, tali plugin non
-lavorano con la maggior parte delle versioni di Chrome). Assicurati di
-aver installato il plugin IcedTea (su Linux vedi il tuo gestore dei
-pacchetti) o il plugin di Oracle Java
-(vedi: `IcedTea <http://icedtea.classpath.org/wiki/IcedTea-Web>`_
-e `Java <https://java.com/en/download/help/index_installing.xml>`_).
-
-Se stai usando un server Sage sul web e anche la visualizzazione
-tramite javascript non funziona, potresti avere un problema con la
-funzionalità javascript del tuo browser, o potresti aver disabilitato
-javascript.
-
-
 Posso usare gli strumenti di Sage in un ambiente commerciale?
 """""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
 

src/sage/features/jmol.py

@@ -36,7 +36,7 @@ def __init__(self):
             filename='JmolData.jar',
             search_path=jmol_search_path,
             spkg='jmol',
-            type='standard',
+            type='optional',
             description="Java viewer for chemical structures in 3D")
 
 

src/sage/graphs/graph.py

@@ -362,7 +362,7 @@
     sage: G = graphs.RandomGNP(15,.3)
     sage: G.show()                                                                      # needs sage.plot
 
-And you can view it in three dimensions via jmol with ``show3d()``. ::
+And you can view it in three dimensions with ``show3d()``. ::
 
     sage: G.show3d()                                                                    # needs sage.plot