Expression functions not available in conditionals or vars values passed to tasks

[jessesuen]

Description

If I try to use commitFrom function to pass something to a task, e.g.:

      steps:
      - task:
          name: render-branch
        vars:
        - name: commit
          value: ${{ commitFrom("https://github.com/jessesuen/kargo-rendered-branches.git").ID }}

I get the following error:

step execution failed: step 0 met error threshold of 1: failed to get step config: error pre-processing promotion variable "commit": reflect: call of reflect.Value.Call on zero Value (1:2) | commitFrom("https://github.com/jessesuen/kargo-rendered-branches.git").ID | .^

But the same commitFrom will work as a normal step:

      steps:
      - uses: git-clone
        config:
          repoURL: https://github.com/jessesuen/kargo-rendered-branches.git
          checkout:
          - commit: ${{ commitFrom("https://github.com/jessesuen/kargo-rendered-branches.git").ID }}
            path: ./src

Screenshots

Steps to Reproduce

Try to use commitFrom in a vars[].value passed to a task.

Version

v1.3.1

[jessesuen]

Conditionals (if) also lack access to functions.

[krancour]

@jessesuen assigning to you only because I think you said you were working on it.

If I'm wrong of if you need to hand it off, please feel free to kick it back to me.