Pat Myron

https://github.com/aws-cloudformation/cfn-lint/pull/1867#discussion_r556178172 touches on that idea: at the time, `regex` was failing to build in `cfn-lint`, but I haven't looked into it much beyond that quick attempt

Tracking in https://github.com/aws-cloudformation/cfn-lint-visual-studio-code/issues/219

> We need to download the registry schema from a users account/region. This would include us needing to have credentials to get these files. Today cfn-lint doesn't require credentials and...

Keep in mind tagging is actually one of the more difficult enforcement scenarios to statically analyze since these tags are usually passed in at the stack level rather than being...

> @nathanataws - I was wondering in which language the rulesets are written? > is it Rust? 🤔 [ruleset syntax is described here](https://github.com/aws-cloudformation/cloudformation-guard/tree/master/cfn-guard#writing-rules)

discussed here as well: https://github.com/aws-cloudformation/cfn-python-lint/issues/1586#issuecomment-642984414

> * Validators and other non-generated code will be merged in (likely from separate files using object mixins) I'd also love for validators like `AllowedValues` lists to no longer be...

Looks like custom rule(s) being appended that import `AVAILABILITY_ZONES`? which looks like it was removed in https://github.com/aws-cloudformation/cfn-python-lint/pull/1750

Are you comfortable sharing the custom rule(s) importing `AVAILABILITY_ZONES`? Editing them might be another possible workaround depending on the rule(s)

@kddejong cached from https://github.com/aws-cloudformation/cfn-python-lint/pull/1789?