Support ignore_run_exports_from in convert

[gforsyth]

Description
Currently, a block like:

build:
  ignore_run_exports_from:
    - {{ compiler('cuda') }}

is copied directly over into a recipe.yaml file, but rattler-build doesn't support this syntax (https://rattler.build/latest/reference/recipe_file/#ignore-run-exports)

While rattler-build supports two different methods of specifying runtime ignores, one of them seems like a good direct analog to the conda-build format:

  requirements:
    build: ...
    ignore_run_exports:
      from_package:
        - {{ compiler('cuda') }}

Additional context

[schuylermartin45]

I don't think I've seen this field (ignore_run_exports) before. I'm very happy you've pointed this out, it doesn't look like a direct translation is mentioned in CEP-13/CEP-14 that defines the new format.

I don't think this is difficult to add support for, it is just a matter of finding the time.

[jakirkham]

Thanks Gil and Schuyler! 🙏

Just looking at the rattler-build docs, see the following advice:

• build.ignore_run_exports is now requirements.ignore_run_exports.by_name
• build.ignore_run_exports_from is now
  requirements.ignore_run_exports.from_package

When looking for that text in the CEPs, found the following in CEP 14:

  # the run exports to ignore when calculating the requirements
  ignore_run_exports:
    # ignore run exports by name (e.g. `libgcc-ng`)
    by_name: [string]
    # ignore run exports that come from the specified packages
    from_package: [string]

Maybe CEP 14 could clarify that better?

[schuylermartin45]

Most sections in the CEPs have a comment saying "this replaces X" or something similar. Certainly helps when you're in a rush and just Ctrl-F'ing through the file for the old field names.

[jakirkham]

Yes this sounds like a good idea. Would you like to open a PR to the CEP?

[schuylermartin45]

I wouldn't mind doing it, but I won't be able to do that anytime soon. I have some very high priority tasks that are taking me away from the Conda community for a little bit.