https://w3id.org/cwl/CommonWorkflowLanguage.yml returns 404

[GlassOfWhiskey]

In several places inside the cwltool codebase there are refeences to the https://w3id.org/cwl/CommonWorkflowLanguage.yml link, both in YAML files (e.g. in the extensions) and in the Python code (e.g. here). However, this file does not exist (the link returns a 404 error).

This affects, for example, schema_salad parsers, which try to resolve the import without success. Simply redirecting the link to a specific version of the CommonWorkflowLanguage.yml file could be not enough, as different extension.yml files import the same link, even if they must refer to different versions of the file.

A discussion is needed on how to proceed.

[tetron]

The way cwltool works internally is that it manipulates the cache in order to have the correct version show up at that URL when loading. But I agree it would be much better to have correctly functioning URLs with explicit versions.