Impossible to override context in for a child template

In GitLab by @m1kola on Dec 14, 2017, 11:38

If you have a some_page.html&some_page.yaml and include_me.html&include_me.html and some_page.html includes include_me.html.

some_page.yaml with something like:

context:
  page:
    pk: 1
    title: "my title"

and include_me.yaml with something like:

context:
  page:
    title: "Title from include"

Title from include will appear on both patterns. It's impossible to override single key in some_page.html

cc @bcdickinson

Start by tracing how context is merged for some_page.html and include_me.html, using the corresponding some_page.yaml and include_me.yaml examples in the issue. Verify that the included template can override only title while preserving page.pk from the parent context, and add or update coverage for that behavior if the relevant tests are found.