Can an ansible collection query its own metadata?

Assuming an ansible collection with the following galaxy.yml file:

namespace: my-company
name: test
version: "1.0.0"

... is there a way from a task in my collection to find the 1.0.0 in the above? Obviously, preferably, without manually parsing galaxy.yml myself.

In the magic variables I found the variable ansible_collection_name which tells me the name of my collection, but not its version.

Am I missing something, or did the ansible developers just not provide that possibility?

If not for a collection, is there an option to do this for old-style roles? That works too.

You can use the lookup plugin community.general.collection_version (ships with the community.general collection)

install
ansible-galaxy collection install community.general

Playbook example:

- name: Demo - Get Ansible collection version via lookup
  hosts: localhost
  gather_facts: false
  connection: local

  collections:
    - community.general  # ensures the lookup is available

  vars:
    collection_fqcn: "my-company.test"   # change to your collection

  tasks:
    - name: Read version of a specific collection
      set_fact:
        collection_version: >-
          {{ lookup('community.general.collection_version', collection_fqcn) }}

    - name: Show version
      debug:
        msg: "Collection {{ collection_fqcn }} version: {{ collection_version }}"

Also, when you’re inside a role within a collection, you can get the current collection’s version like this

{{ lookup('community.general.collection_version', ansible_collection_name) }}