GitLab Merge Request falsely only shows/uses the jobs run throught `rules` as merge permission

Question

I have changed a few jobs in our GitLab CI pipeline to only run under certain conditions, like this:

foo:
  stage: a
  rules:
    - exists:
        - "some/file"
    - changes:
        - "some/bla"
  script:
    - "echo 1"

All other jobs are implemented "normal", i.e., like this:

bar:
  stage: a
  script:
    - "echo 2"

We have setup the repository like that, that Merge Requests are only allowed to be merged if the pipeline succeeds. However, since this change, only the jobs that are listed through rules are applied to that, i.e., it looks now like this in the web interface:

and the UI would let me merge this, altough the latest "normal" jobs did not succeed at all:

How can I enforce that all jobs need to succeed to mark a branch mergeable?

Answer 1

The solution to run only on branch OR merge request is to use (on GitLab 13.8 or later)

workflow:
  rules:
    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
    - if: $CI_COMMIT_BRANCH && $CI_OPEN_MERGE_REQUESTS
      when: never
    - if: $CI_COMMIT_BRANCH

Reference: Switch between branch pipelines and merge request pipelines