[carpet] `is_mathjax` error building my site

[andy47]

Hi, I have a problem with the carpet theme. I installed it following instructions on the theme home page - https://themes.getnikola.com/v7/carpet/

But when I change the THEME setting in my conf.py and try and build my site I get an error message;

File "/Users/andy47/Work/envs/nikola/lib/python3.9/site-packages/mako/runtime.py", line 947, in exec_template
callable(context, *args, **kwargs)
File "/Users/andy47/Work/Projects/homepage/cache/.mako.tmp/base.tmpl.py", line 143, in render_body
context['self'].content(**pageargs)
File "/Users/andy47/Work/Projects/homepage/cache/.mako.tmp/story.tmpl.py", line 92, in render_content
__M_writer(str(helper.mathjax_script(post)))
File "/Users/andy47/Work/Projects/homepage/cache/.mako.tmp/post_helper.tmpl.py", line 196, in render_mathjax_script
if post.is_mathjax:
AttributeError: 'Post' object has no attribute 'is_mathjax'

It looks to me that there may be a conflict between the carpet theme and the base mako theme but I don't seem to be able to track it down. Can anyone help me work out what's going on and how to fix it?

[andy47]

Sorry, forgot to say that I'm running Nikola v8.1.3 on Mac OS.

[Kwpolska]

The carpet theme might not be compatible with Nikola v8 — it might still be using old-style math code. It should be updated to ensure it works (and PRs are very welcome!)

[maphew]

Problem seems to still exist, yet carpet is listed with nikola theme -l -u https://themes.getnikola.com/v8/themes.json. Shouldn't it be removed from that list? Is there a method to know what themes are known working with v8?