Access stack_group_config in stack group config

[cornerman]

Can we somehow access other stack-group-config values within a config.yaml?

Example config.yaml:

project_code: "Bla" # may be overwritten in a stack-group-config beneath this one
template_bucket_name: {{ stack_group_config.project_code }}-cloudformation-templates

[ngfgrant]

I think this is the same request in #624 and #355 will close for now.

[et304383]

@ngfgrant this isn't the same issue. I just came across the same problem.

I want to define once a resource name prefix of project_code + stack_group_path in config.yaml rather than having to put into each stack definition.

IE - under config/dev/config.yaml I want to define:

sceptre_user_data:
  resource_name_prefix: {{ stack_group_config.project_code }}-{{ stack_group_config.stack_group_path }}

So that in every template I can now reference:

{{ sceptre_user_data.resource_name_prefix }}

Unfortunately, this only works if I put the sceptre_user_data declaration into the stack config, not the stack group config.

What is the point of having config cascading logic if you can't define a variable anywhere?