Optional depends_on

[anbraten]

I quite sometimes would like to have an optional depends_on for steps and workflows.

For example sometime I want a step to be only executed in case one of two previous steps were executed.

steps:
  - name: review deployment
    when:
      - event: pull_request
  
  - name: production deployment
    when:
      - event: tag

  - name: slack
    depends_on:
      - "review deployment"
      - "production deployment"
    image: plugin/...

For this it would be helpful to write sth like:

steps:
  - name: review deployment
    when:
      - event: pull_request
  
  - name: production deployment
    when:
      - event: tag

  - name: slack
    depends_on:
      - name: "review deployment"
        optional: true
      - name: "production deployment"
        optional: true
    image: plugin/...

[zc-devs]

Maybe it is time to introduce some logic...

(first && second) || third

like with environments.

[anbraten]

So something like #3341?

[lafriks]

I still think that we should treat skipped (by when condition) as completed for depends_on conditions, otherwise I find very often to have to split to multiple pipelines and/or duplicting steps that are same with just different depends _on

[anbraten]

Would the optional keyword work for you in that case?

Changing it to ignore unkown depends_on steps would be breaking and would not show you typos etc

[lafriks]

it can still warn/fail if depends_on does not exists at all but treat as completed dependency if when condition filters it out