Compatibility of `preconditions` & `ignore_error`

[butuzov]

Description

I tried to add dependency on a tool for developers, however its failing if i use precondition.

Case o failure

tasks:
  tests:
    desc: run tests
    cmds:
    - task: install:tparse
      ignore_error: true
    - go test -v -json ./... | go tool tparse --all

  install:tparse:
    preconditions: [ "go tool | grep -q tparse && exit 1 || exit 0" ]
    cmd: go get -tool github.com/mfridman/tparse@latest
    ignore_error: true # this also do nothing
    silent: true #aswell as silent ignored

Results in

 > task backend:tests
task: `go tool | grep -q tparse && exit 1 || exit 0` failed
task: Failed to run task "backend:tests": task: Failed to run task "backend:install:tparse": task: precondition not met

Case o success

while

tasks:
  tests2:
    cmds:
    - task: fail
      ignore_error: true
    - echo "works?"

  fail:
    cmd: sh 1
    silent: true

Results in

 > task backend:tests2
sh: 1: No such file or directory
task: [backend:tests2] echo "works?"
works?

So, why does having precondition for running of the tasks failng whole pipeline?

Version

3.48.0

Operating system

macOS

Experiments Enabled

No response

Example Taskfile

version: 3

tasks:
  tests:
    desc: run tests
    cmds:
    - task: install:tparse
      ignore_error: true
    - go test -v -json ./... | go tool tparse --all

  install:tparse:
    preconditions: [ "go tool | grep -q tparse && exit 1 || exit 0" ]
    cmd: go get -tool github.com/mfridman/tparse@latest
    ignore_error: true # this also do nothing
    silent: true #aswell as silent ignored

[trulede]

I think you will find the new if solves your problem. See the following doc:
https://taskfile.dev/docs/guide#if-vs-preconditions