Reusable workflows: Increase limit of called workflow depth from 2 to 3 or more

Describe the enhancement

I am trying to generalize my resuable workflows. By doing so I hit the maximum depth limit:

error parsing called workflow "./.github/workflows/build.yml@": 
job "arch" calls workflow "./.github/workflows/docker-multistage-build.yml@",
but doing so would exceed the limit on called workflow depth of 2

I would like to be able to allow reusable workflows to call other reusable workflows and then call the initial one in my main workflow

[baracudda]

then why did I just now get “but doing so would exceed the limit on called workflow depth of 3”?

[e3b0c442]

Because the total depth is 4, including the top level workflow, so the called workflow depth limit is 3.

That said, this really reeks of an artificial limitation or suboptimal implementation, and is extremely limiting from an encapsulation and composability perspective. I hope there are plans in progress to address whatever the root failure is and remove this limit entirely (or set it to a number that no sane workflow can reach).