Jinja

Raised as a usability problem by 5 people on Hacker News over 9 years (2017–2025), in 4 threads.

People raised many different problems with Jinja, but no single problem has yet been raised by 3 people in 3 different months and threads.

Unreviewed issues were grouped by machine: Claude Haiku labelled each comment as a usability complaint, named what it's about and summed up the problem in a line, and a small model grouped similar problems. Nobody has checked them by hand. Expect mistakes.

The newest 5 complaints

Passing multiple slot children into templates is unintuitive and ugly-looking2025-06-07
Same thing can be built three different ways, which confuses the user2024-08-27
Template language is unintuitive and opinionated enough to be a pain to use2024-08-27
Jinja is a mess that took a lot of effort to understand2021-07-09
Can't call Python global functions like len() in templates, forcing awkward workarounds and filters2017-07-17