Validate gossfiles with templates

[hinricht]

Describe the feature:

The provided schema.yaml is fine for gossfile which don't make use of templates. But when I use templates, my editor (neovim with Goss-file-schema loaded) starts to scream at me becasue it cannot validate the yaml anymore (althogh the gossfile renders fine and tests succeed).

I's like to have a way to validate the gossfile that works in the editor but also with tools i.e. check-jsonschema.

$ check-jsonschema -v --schemafile https://raw.githubusercontent.com/goss-org/goss/master/docs/schema.yaml goss.yaml
Several files failed to parse.
  FailedFileLoadError: Failed to parse goss.yaml
    in "/usr/lib/python3.12/site-packages/check_jsonschema/instance_loader.py", line 48
    >>> data: t.Any = self._parsers.parse_data_with_path(

    caused by

    ParserError: while parsing a block mapping
      in "<byte string>", line 3, column 1:
        addr:
        ^ (line: 3)
    expected <block end>, but found '<block mapping start>'
      in "<byte string>", line 14, column 5:
            https://{{.}}:
            ^ (line: 14)
      in "/usr/lib/python3.12/site-packages/check_jsonschema/parsers/__init__.py", line 92
      >>> return loadfunc(data)

Describe the solution you'd like

I don't know how this can be achieved. Maybe I'm just doing it wrong and other editors can deal with this just fine.

Describe alternatives you've considered

None.

[hinricht]

Hmm, I just found #793 (comment) which is about this:

For templates, unfortunately the goss documents with templates are not valid json/yaml, so the plain json can't do much yet.

#795 should fix this, which is merged, but as I understand it it only handles gossfile validation after beeing rendered, which is no the use case I'm looking for.