Tasks: post-dependency that always runs

[reitzig]

Currently, depends_post only run if the tasks they are declared on succeed.

I would like a way to run some cleanup in any case (i.e. also on failure).

Alternatives: Withrun tasks, I could undo set -e, or complicate the script to implement try-finally.

[roele]

This sounds like something that might relate to #3525

[reitzig]

Yup. The discussion there seems to focus on running stuff only after failure.

A shared abstraction could be adding a "long" form to depends_post that allows to set when the post-task should run (always, on-success, on-failure).

For example:

[tasks.push]
depends = ['build']
run = """
#!/usr/bin/env bash
docker login "${DOCKER_REGISTRY}"
docker tag "my-image:$(date -Idate)" "${DOCKER_REGISTRY}/my-image:$(date -Idate)"
docker push ""${DOCKER_REGISTRY}/my-image:$(date -Idate)""
"""
depends_post = [
  { name = 'push-cleanup', when = 'always' }
]

[tasks.push-cleanup]
hide = true
run = """
#!/usr/bin/env bash
docker image rm "${DOCKER_REGISTRY}/my-image:$(date -Idate)"
docker logout
"""

FWIW, in this example it would also be useful if push could set/forward to push-cleanup, but that's another discussion.

[reitzig]

Precedence: Taskfile has defer (it's not clear from the reference that those commands always run, but see taskfile.dev/usage).

[qoomon]

A finally functionality would be awesome

[bas-de-laine]

I confirm Task's defer does run even if the task failed.

mise needs this.

[rmorshea-atom-computing]

The architecture docs currently state that this ought to be the case but I guess that's just not the current behavior.

[qoomon]

Regardless, I would also vote for renaming depends_post to finallyor just post because a task does not depend on a post action

[artemklevtsov]

@jdx, there is any plans to implement it? Or bring depends_post behavior in line with documentation.

Tasks that run after this task completes (whether successful or failed):