Theme style undefined

[TriangleBear]

BUG

When I'm switching to sphinx-typlog-theme specifically it keeps on getting an error

File "C:\xampp\htdocs\docs\Lib\site-packages\sphinx\builders\html\__init__.py", line 1228, in handle_page
        raise ThemeError(msg) from exc
    sphinx.errors.ThemeError: An error happened in rendering the page content/database.
    Reason: UndefinedError("'style' is undefined")

I still don't get why is that.

How to Reproduce

When I installed the theme sphinx-typlog-theme, and apply it to the sphinx html_theme it keeps on having that error.

Environment Information

Versions
========

* Platform:         win32; (Windows-11-10.0.26100-SP0)
* Python version:   3.13.2 (CPython)
* Sphinx version:   8.2.3
* Docutils version: 0.21.2
* Jinja2 version:   3.1.6
* Pygments version: 2.19.1

Last Messages
=============

    Writing evaluated template result to C:\xampp\htdocs\docs\build\html\_static\language_data.js
    Writing evaluated template result to C:\xampp\htdocs\docs\build\html\_static\theme.css
    copying static files: done
    copying extra files...
    copying extra files: done
    copying assets: done

    writing output... [ 14%]
    content/database

Loaded Extensions
=================

* sphinx.ext.mathjax (8.2.3)
* alabaster (1.0.0)
* sphinxcontrib.applehelp (2.0.0)
* sphinxcontrib.devhelp (2.0.0)
* sphinxcontrib.htmlhelp (2.1.0)
* sphinxcontrib.serializinghtml (2.0.0)
* sphinxcontrib.qthelp (2.0.0)
* myst_parser (4.0.1)
* sphinx_typlog_theme (0.8.0)

Traceback
=========

    Traceback (most recent call last):
      File "C:\xampp\htdocs\docs\Lib\site-packages\sphinx\builders\html\__init__.py", line 1212, in handle_page
        output = self.templates.render(templatename, ctx)
      File "C:\xampp\htdocs\docs\Lib\site-packages\sphinx\jinja2glue.py", line 217, in render
        return self.environment.get_template(template).render(context)
               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
      File "C:\xampp\htdocs\docs\Lib\site-packages\jinja2\environment.py", line 1295, in render
        self.environment.handle_exception()
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
      File "C:\xampp\htdocs\docs\Lib\site-packages\jinja2\environment.py", line 942, in handle_exception
        raise rewrite_traceback_stack(source=source)
      File "C:\xampp\htdocs\docs\Lib\site-packages\sphinx_typlog_theme\page.html", line 21, in top-level template code
        <meta property="og:image" content="{{ src }}">
        ^^^^^^^^^^^^^^^^^^^^^
      File "C:\xampp\htdocs\docs\Lib\site-packages\sphinx_typlog_theme\layout.html", line 29, in top-level template code
        <link rel="stylesheet" href="{{ pathto('_static/' + style, 1) }}?v={{ theme_version }}" type="text/css" />
        ^^^^^^^^^^^^^^^^^^^^^^^
    jinja2.exceptions.UndefinedError: 'style' is undefined
    
    The above exception was the direct cause of the following exception:
    
    Traceback (most recent call last):
      File "C:\xampp\htdocs\docs\Lib\site-packages\sphinx\cmd\build.py", line 432, in build_main
        app.build(args.force_all, args.filenames)
        ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      File "C:\xampp\htdocs\docs\Lib\site-packages\sphinx\application.py", line 426, in build
        self.builder.build_update()
        ~~~~~~~~~~~~~~~~~~~~~~~~~^^
      File "C:\xampp\htdocs\docs\Lib\site-packages\sphinx\builders\__init__.py", line 375, in build_update
        self.build(
        ~~~~~~~~~~^
            to_build,
            ^^^^^^^^^
        ...<2 lines>...
            method='update',
            ^^^^^^^^^^^^^^^^
        )
        ^
      File "C:\xampp\htdocs\docs\Lib\site-packages\sphinx\builders\__init__.py", line 454, in build
        self.write(docnames, updated_docnames, method)
        ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      File "C:\xampp\htdocs\docs\Lib\site-packages\sphinx\builders\__init__.py", line 735, in write
        self.write_documents(docnames)
        ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
      File "C:\xampp\htdocs\docs\Lib\site-packages\sphinx\builders\__init__.py", line 749, in write_documents
        self._write_serial(sorted_docnames)
        ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
      File "C:\xampp\htdocs\docs\Lib\site-packages\sphinx\builders\__init__.py", line 768, in _write_serial
        self.write_doc(docname, doctree)
        ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
      File "C:\xampp\htdocs\docs\Lib\site-packages\sphinx\builders\html\__init__.py", line 677, in write_doc
        self.handle_page(docname, ctx, event_arg=doctree)
        ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      File "C:\xampp\htdocs\docs\Lib\site-packages\sphinx\builders\html\__init__.py", line 1228, in handle_page
        raise ThemeError(msg) from exc
    sphinx.errors.ThemeError: An error happened in rendering the page content/database.
    Reason: UndefinedError("'style' is undefined")

Sphinx extensions

extensions = [
    'myst_parser'
]

Additional context

No response

[AA-Turner]

Did you fix this @TriangleBear?

A

[TriangleBear]

@AA-Turner What I did is to change the theme to sphinx-book-theme, previously the theme I was using was the piccolo-theme.
I still don't know what it does so I just change the theme.

I'll find the duplicate of this in a bit.

[TriangleBear]

@AA-Turner here it is duplicate issue

[mgeier]

See also #11931.

[TriangleBear]

Does it hurt if some of use work on this?
I'm really interested in look into the codebase and work on this in a long shot. This is making other devs frustrated and I don't like seeing a bit of bad fire in that sense, but mind you I'm still starting and this might be a good way to understand more about the error. For the #11931 lot of the devs that are using themes are not really getting maintained that much. Is this a good opportunity to understand the codebase more? and will I get better in analyzing it as well?

[AA-Turner]

I welcome efforts to provide a better error message. We are unlikely to revert the deprecations and removals discussed in #11931, though. Is the sphinx-typlog-theme maintained?

A

[TriangleBear]

Is the sphinx-typlog-theme maintained?

As I checked it hasn't been maintained for 4 years

[AA-Turner]

I have created #13443 to improve the error message.

https://github.com/typlog/sphinx-typlog-theme is actually archived, and suggests using the Shibuya theme instead.

A