[v2.0.0b1] TemplateNotFound #6186

JulienPalard · 2019-03-18T13:33:43Z

Hi!

Whild building cpython documentation for cpython 2.7 with sphinx 2.0.0b1 I'm having a TemplateNotFound error without any other indication.

Breaking in the code helps me a bit, it's a page.html that is missing.

cc @tk0miya not sure if the issue is my side or sphinx side but as we're near the 2.0.0 release I prefer mentionning you on this issue.

To Reproduce

$ git clone https://github.com/python/cpython/
$ cd cpython/Doc
$ git checkout 2.7
$ pip install blurb python-docs-theme
$ pip install --pre sphinx
$ make autobuild-dev-html

see at the end:

writing additional pages... download index
Theme error:
An error happened in rendering the page index.
Reason: TemplateNotFound()

Expected behavior
No build error OR a verbose message.

Environment info

OS: Debian testing
Python version: 3.7.2
Sphinx version: 2.0.0b1

More info
With v1.8.5 it works.

Stacktrace:

  /home/mdk/.venvs/sphinx-build-2.0.0b1/bin/sphinx-build(11)<module>()
-> load_entry_point('Sphinx', 'console_scripts', 'sphinx-build')()
  /home/mdk/clones/sphinx/sphinx/cmd/build.py(299)main()
-> return build_main(argv)
  /home/mdk/clones/sphinx/sphinx/cmd/build.py(284)build_main()
-> app.build(args.force_all, filenames)
  /home/mdk/clones/sphinx/sphinx/application.py(338)build()
-> self.builder.build_update()
  /home/mdk/clones/sphinx/sphinx/builders/__init__.py(326)build_update()
-> len(to_build))
  /home/mdk/clones/sphinx/sphinx/builders/__init__.py(392)build()
-> self.finish()
  /home/mdk/clones/sphinx/sphinx/builders/html.py(665)finish()
-> self.finish_tasks.add_task(self.gen_additional_pages)
  /home/mdk/clones/sphinx/sphinx/util/parallel.py(47)add_task()
-> res = task_func()
  /home/mdk/clones/sphinx/sphinx/builders/html.py(700)gen_additional_pages()
-> self.handle_page(pagename, {}, template)
  /home/mdk/clones/sphinx/sphinx/builders/html.py(1092)handle_page()
-> output = self.templates.render(templatename, ctx)
  /home/mdk/clones/sphinx/sphinx/jinja2glue.py(207)render()
-> return self.environment.get_template(template).render(context)
  /home/mdk/.venvs/sphinx-build-2.0.0b1/lib/python3.7/site-packages/jinja2/asyncsupport.py(76)render()
-> return original_render(self, *args, **kwargs)
  /home/mdk/.venvs/sphinx-build-2.0.0b1/lib/python3.7/site-packages/jinja2/environment.py(1005)render()
-> return concat(self.root_render_func(self.new_context(vars)))
  /home/mdk/clones/cpython/Doc/tools/templates/indexcontent.html(14)root()
-> <span class="linkdescr">{% trans whatsnew_index=pathto("whatsnew/index") %}or <a href="{{ whatsnew_index }}">all "What's new" documents</a> since 2.0{% endtrans %}</span></p>
  /home/mdk/clones/cpython/Doc/tools/templates/layout.html(14)root()
-> </li>
  /home/mdk/.venvs/sphinx-build-2.0.0b1/lib/python3.7/site-packages/python_docs_theme/layout.html(38)root()
-> {% block extrahead %}
  /home/mdk/clones/sphinx/sphinx/themes/classic/layout.html(14)root()
-> {% if theme_collapsiblesidebar|tobool %}
  /home/mdk/clones/sphinx/sphinx/themes/basic/layout.html(293)root()
  /home/mdk/clones/sphinx/sphinx/themes/basic/layout.html(500)block_content()
  /home/mdk/clones/sphinx/sphinx/themes/basic/layout.html(541)block_sidebar2()
  /home/mdk/.venvs/sphinx-build-2.0.0b1/lib/python3.7/site-packages/jinja2/sandbox.py(427)call()
-> return __context.call(__obj, *args, **kwargs)
  /home/mdk/.venvs/sphinx-build-2.0.0b1/lib/python3.7/site-packages/jinja2/runtime.py(262)call()
-> return __obj(*args, **kwargs)
  /home/mdk/.venvs/sphinx-build-2.0.0b1/lib/python3.7/site-packages/jinja2/runtime.py(575)__call__()
-> return self._invoke(arguments, autoescape)
  /home/mdk/.venvs/sphinx-build-2.0.0b1/lib/python3.7/site-packages/jinja2/asyncsupport.py(110)_invoke()
-> return original_invoke(self, arguments, autoescape)
  /home/mdk/.venvs/sphinx-build-2.0.0b1/lib/python3.7/site-packages/jinja2/runtime.py(579)_invoke()
-> rv = self._func(*arguments)
  /home/mdk/clones/sphinx/sphinx/themes/basic/layout.html(158)macro()
-> {%- if next %}
  /home/mdk/.venvs/sphinx-build-2.0.0b1/lib/python3.7/site-packages/jinja2/environment.py(869)get_or_select_template()
-> return self.get_template(template_name_or_list, parent, globals)
  /home/mdk/.venvs/sphinx-build-2.0.0b1/lib/python3.7/site-packages/jinja2/environment.py(830)get_template()
-> return self._load_template(name, self.make_globals(globals))
  /home/mdk/.venvs/sphinx-build-2.0.0b1/lib/python3.7/site-packages/jinja2/environment.py(804)_load_template()
-> template = self.loader.load(self, name, globals)
  /home/mdk/.venvs/sphinx-build-2.0.0b1/lib/python3.7/site-packages/jinja2/loaders.py(113)load()
-> source, filename, uptodate = self.get_source(environment, name)
> /home/mdk/clones/sphinx/sphinx/jinja2glue.py(236)get_source()
-> raise TemplateNotFound(template)

(Pdb) args
self = <sphinx.jinja2glue.BuiltinTemplateLoader object at 0x7f8e08ff2898>
environment = <jinja2.sandbox.SandboxedEnvironment object at 0x7f8e08ff2860>
template = 'i'

Exploring the stacktrace near if next I'm seeing:

> /home/mdk/clones/sphinx/sphinx/themes/basic/layout.html(158)macro()
-> {%- if next %}
(Pdb) down
> /home/mdk/.venvs/sphinx-build-2.0.0b1/lib/python3.7/site-packages/jinja2/environment.py(869)get_or_select_template()
-> return self.get_template(template_name_or_list, parent, globals)
(Pdb) args
self = <jinja2.sandbox.SandboxedEnvironment object at 0x7f53794ad710>
template_name_or_list = 'i'
parent = 'basic/layout.html'
globals = None

In the {%- if next %} context I'm seeing:

 'l_2_sidebartemplate': 'i',

OK so this is:

warnings.warn('Now html_sidebars only allows list of sidebar '
              'templates as a value. Support for a string value '
              'will be removed at Sphinx-2.0.',
              RemovedInSphinx20Warning, stacklevel=2)

So this just have to be documented in the CHANGES files, in the Incompatible changes section.

The text was updated successfully, but these errors were encountered:

JulienPalard · 2019-03-18T15:22:25Z

About the message not being vebose enough (just TemplateNotFound()) I opened: pallets/jinja#961

tk0miya · 2019-03-18T15:34:07Z

Is this caused by string value in html_sidebars? If true, it's not a new change. We announced the change about html_sidebars at 1.7.0b1 release.

sphinx/CHANGES

Lines 1089 to 1095 in 42c8fbd

    
           Deprecated 
        
           ---------- 
        
           1.7.0b1 
        
           * using a string value for :confval:`html_sidebars` is deprecated and only list 
        
             values will be accepted at 2.0.

JulienPalard · 2019-03-18T15:35:37Z

Yes but when I'm upgrading a project from 1.8.5 to 2.0.0 I'm not reading the 1.7.0b1 changelog :]

tk0miya · 2019-03-18T15:41:05Z

Should we mention the deprecated feature also on removal? We'll drop all deprecations in 1.7.x series on next major release.

JulienPalard · 2019-03-18T15:45:25Z

I think so, like I propose in #6187 (don't know if there are others), to be sure people just reading the release changes (like I did) get it right. Also because this one (due to the Jinja2 error message not being comprehensive enough) is really tricky to diagnose.

tk0miya · 2019-03-18T15:57:44Z

Hmm... it means nobody reads "deprecated" section and command line warnings...

JulienPalard · 2019-03-18T17:22:58Z

Yes, the sad reality :(

But I have an excuse \o/ my "command line warnings" are scattered into 31 logs files, producing 4068066 lines of log daily (thanks to latex warning mainly), so I only read them when really needed. But yes that's sad I didn't spotted the RemovedInSphinx20Warning: Now html_sidebars only allows list of sidebar templates as a value. Support for a string value will be removed at Sphinx-2.0..

For the Sphinx 2 upgrade I read the CHANGES file today (but I expect almost nobody does it), but only the 2.0 section, not mentionning html_sidebar þ

tk0miya · 2019-03-21T09:08:01Z

In 2.0.0, we'll mark large amount of code as deprecated. It means they will be removed in future version (maybe in 4.0.0). I feel copying them to CHANGES on future version is annoying.

sphinx/CHANGES

Lines 174 to 257 in e6cc18c

    
           Deprecated 
        
           ---------- 
        
           * Support for evaluating Python 2 syntax is deprecated. This includes 
        
             configuration files which should be converted to Python 3. 
        
           * The arguments of ``EpubBuilder.build_mimetype()``, 
        
             ``EpubBuilder.build_container()``, ``EpubBuilder.bulid_content()``, 
        
             ``EpubBuilder.build_toc()`` and ``EpubBuilder.build_epub()`` 
        
           * The arguments of ``Epub3Builder.build_navigation_doc()`` 
        
           * The config variables 
        
             - :confval:`html_experimental_html5_writer` 
        
           * The ``encoding`` argument of ``autodoc.Documenter.get_doc()``, 
        
             ``autodoc.DocstringSignatureMixin.get_doc()``, 
        
             ``autodoc.DocstringSignatureMixin._find_signature()``, and 
        
             ``autodoc.ClassDocumenter.get_doc()`` are deprecated. 
        
           * The ``importer`` argument of ``sphinx.ext.autodoc.importer._MockModule`` 
        
           * The ``nodetype`` argument of ``sphinx.search.WordCollector. 
        
             is_meta_keywords()`` 
        
           * The ``suffix`` argument of ``env.doc2path()`` is deprecated. 
        
           * The string style ``base`` argument of ``env.doc2path()`` is deprecated. 
        
           * The fallback to allow omitting the ``filename`` argument from an overridden 
        
             ``IndexBuilder.feed()`` method is deprecated. 
        
           * ``sphinx.addnodes.abbreviation`` 
        
           * ``sphinx.application.Sphinx._setting_up_extension`` 
        
           * ``sphinx.builders.epub3.Epub3Builder.validate_config_value()`` 
        
           * ``sphinx.builders.html.SingleFileHTMLBuilder`` 
        
           * ``sphinx.builders.htmlhelp.HTMLHelpBuilder.open_file()`` 
        
           * ``sphinx.cmd.quickstart.term_decode()`` 
        
           * ``sphinx.cmd.quickstart.TERM_ENCODING`` 
        
           * ``sphinx.config.check_unicode()`` 
        
           * ``sphinx.config.string_classes`` 
        
           * ``sphinx.domains.cpp.DefinitionError.description`` 
        
           * ``sphinx.domains.cpp.NoOldIdError.description`` 
        
           * ``sphinx.domains.cpp.UnsupportedMultiCharacterCharLiteral.decoded`` 
        
           * ``sphinx.ext.autodoc.importer._MockImporter`` 
        
           * ``sphinx.ext.autosummary.Autosummary.warn()`` 
        
           * ``sphinx.ext.autosummary.Autosummary.genopt`` 
        
           * ``sphinx.ext.autosummary.Autosummary.warnings`` 
        
           * ``sphinx.ext.autosummary.Autosummary.result`` 
        
           * ``sphinx.ext.doctest.doctest_encode()`` 
        
           * ``sphinx.io.SphinxBaseFileInput`` 
        
           * ``sphinx.io.SphinxFileInput.supported`` 
        
           * ``sphinx.io.SphinxRSTFileInput`` 
        
           * ``sphinx.registry.SphinxComponentRegistry.add_source_input()`` 
        
           * ``sphinx.roles.abbr_role()`` 
        
           * ``sphinx.roles.emph_literal_role()`` 
        
           * ``sphinx.roles.menusel_role()`` 
        
           * ``sphinx.roles.index_role()`` 
        
           * ``sphinx.roles.indexmarkup_role()`` 
        
           * ``sphinx.testing.util.remove_unicode_literal()`` 
        
           * ``sphinx.util.attrdict`` 
        
           * ``sphinx.util.force_decode()`` 
        
           * ``sphinx.util.get_matching_docs()`` 
        
           * ``sphinx.util.inspect.Parameter`` 
        
           * ``sphinx.util.jsonimpl`` 
        
           * ``sphinx.util.osutil.EEXIST`` 
        
           * ``sphinx.util.osutil.EINVAL`` 
        
           * ``sphinx.util.osutil.ENOENT`` 
        
           * ``sphinx.util.osutil.EPIPE`` 
        
           * ``sphinx.util.osutil.walk()`` 
        
           * ``sphinx.util.PeekableIterator`` 
        
           * ``sphinx.util.pycompat.NoneType`` 
        
           * ``sphinx.util.pycompat.TextIOWrapper`` 
        
           * ``sphinx.util.pycompat.UnicodeMixin`` 
        
           * ``sphinx.util.pycompat.htmlescape`` 
        
           * ``sphinx.util.pycompat.indent`` 
        
           * ``sphinx.util.pycompat.sys_encoding`` 
        
           * ``sphinx.util.pycompat.terminal_safe()`` 
        
           * ``sphinx.util.pycompat.u`` 
        
           * ``sphinx.writers.latex.ExtBabel`` 
        
           * ``sphinx.writers.latex.LaTeXTranslator._make_visit_admonition()`` 
        
           * ``sphinx.writers.latex.LaTeXTranslator.babel_defmacro()`` 
        
           * ``sphinx.writers.latex.LaTeXTranslator.collect_footnotes()`` 
        
           * ``sphinx.writers.latex.LaTeXTranslator.generate_numfig_format()`` 
        
           * ``sphinx.writers.texinfo.TexinfoTranslator._make_visit_admonition()`` 
        
           * ``sphinx.writers.text.TextTranslator._make_depart_admonition()`` 
        
           * template variables for LaTeX template 
        
             - ``logo`` 
        
             - ``numfig_format`` 
        
             - ``pageautorefname`` 
        
             - ``translatablestrings``

How about adding an entry like "Drop features deprecated in 1.7.x " instead?

JulienPalard · 2019-03-22T16:41:51Z

Drop features deprecated in 1.7.x LGTM

Add an incompatible change entry (refs: #6186)

tk0miya · 2019-03-23T08:41:18Z

done n #6195.
Thank you for comment!

Otherwise the docs-lld-html target fails to build using recent Sphinx with the following not very helpful error message: An error happened in rendering the page index. Reason: TemplateNotFound() It turns out the values in the html_sidebars dictionary always need to be lists now. See sphinx-doc/sphinx#6186

JulienPalard added the type:bug label Mar 18, 2019

JulienPalard mentioned this issue Mar 18, 2019

CHANGES: Warn about html_sidebars now only allowing lists. #6187

Closed

tk0miya added this to the 2.0.0 milestone Mar 18, 2019

tk0miya added a commit to tk0miya/sphinx that referenced this issue Mar 23, 2019

Add deprecation entry (refs: sphinx-doc#6186)

37bcb1c

tk0miya added a commit to tk0miya/sphinx that referenced this issue Mar 23, 2019

Add an incompatible change entry (refs: sphinx-doc#6186)

2c75d27

tk0miya mentioned this issue Mar 23, 2019

Add an incompatible change entry (refs: #6186) #6195

Merged

tk0miya added a commit that referenced this issue Mar 23, 2019

Merge pull request #6195 from tk0miya/update_changes

98e4767

Add an incompatible change entry (refs: #6186)

tk0miya closed this as completed Mar 23, 2019

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[v2.0.0b1] TemplateNotFound #6186

[v2.0.0b1] TemplateNotFound #6186

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[v2.0.0b1] TemplateNotFound #6186

[v2.0.0b1] TemplateNotFound #6186

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