Misleading warning "is not valid under any of the given schemas" when linting tasks again

[alqu]

Summary

I have a task file that is part of a role which is used by a top-level playbook.
Ansible-lint reports a warning when checking the following file whereas I believe it is mistaken because the task works as expected. I suspect the environment key to cause the warning.

This has been already reported on #2888, but is popping up again somehow.

Issue Type

• Bug Report

OS / ENVIRONMENT

ansible-lint --version
# outputs: ansible-lint 6.18.0 using ansible-core:2.15.3 ansible-compat:4.1.7 ruamel-yaml:0.17.32 ruamel-yaml-clib:0.2.7

• ansible installation method: pip
• ansible-lint installation method: pip
• OS: MacOS 13.5.1
• Python: 3.11.5

STEPS TO REPRODUCE

Create the following test.yml file inside a tasks folder of a local role, e.g. roles/myrole/tasks/main.yml:

---
- name: Run npm run prod
  ansible.builtin.command: npm run prod
  environment:
    DISABLE_V8_COMPILE_CACHE: 1
  changed_when: false

Run ansible-lint:

ansible-lint roles/myrole/tasks/main.yml

Desired Behavior

No warning is issued.

Actual Behavior

A warning is issued.

WARNING  Listing 1 violation(s) that are fatal
schema[tasks]: {'name': 'Check some command', 'ansible.builtin.command': {'cmd': 'someCommand'}, 'environment': {'my_env_var': 1}, 'register': 'command_result', 'failed_when': 'command_result.rc > 2', 'changed_when': "command_result.stdout != ''"} is not valid under any of the given schemas

[ssbarnea]

The warning is valid but the error that comes from the python JSON schema validator is of poor quality, not being specific enough.

You can fix the issue very easy by adding quotes around "1".

The funny part is that using the same schema, YAML-language-server is able to give a very good error message, only the python-json-schema validator gives the poor one, and that is the one used by ansible-lint.

We need to keep this bug open till we find a way to improve the error messages, at least for something as simple as this one.

[alqu]

Thanks! This little trick works like a charm.