Dynamic behavior on parallel:matrix

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It would be very handy to dynamically control the number of jobs run by the parallel:matrix.

Proposal

Make the list of values one can specify in the matrix keyword interpret variables presented.

Use Case

Let's say I have a CI/CD job that reads specific configurations and accesses some API's. Then the job results in an array of - let's say service name - which shall be passed to the next job that is a parallel:matrix job. Depending on the resulting list of the previous job, the matrix should be constructed dynamically.

Wanted functionality

Perform the same job with the same behavior on different types of environments. Variables presented shall be interpreted.

Service Related Job:
  stage: release
  needs:
    - job: Prepare
      artifacts: true
  parallel:
    matrix:
      - MODULE_NAME: ${NAMES_AS_LIST} # the variable NAMES_AS_LIST comes from the `dotenv` artifact of the `Prepare` job
        ONE_VAR: "bar"
        ANOTHER_VAR: "baz"
  script:
    - echo $MODULE_NAME