include_role doesn't support notify

[farcaller]

ISSUE TYPE

• Bug Report

COMPONENT NAME

include_role

ANSIBLE VERSION

ansible 2.3.1.0
  config file =
  configured module search path = Default w/o overrides
  python version = 3.6.1 (default, Jul  6 2017, 10:09:38) [GCC 4.2.1 Compatible Apple LLVM 8.1.0 (clang-802.0.42)]

OS / ENVIRONMENT

N/A

SUMMARY

include_role doesn't support changed status, making it impossible to trigger handlers or further activities based on include_role invocation.

STEPS TO REPRODUCE

- include_role: {name: other_role}
  register: role
- debug:
  msg: '{{role.changed}}'

EXPECTED RESULTS

role.changed would be true if any task within included role was changed

ACTUAL RESULTS

role is empty

[alikins]

ping @bcoca @jimi-c

[bcoca]

includes (aside from include_vars) don't return anything, they get substituted by the included tasks

[christiang830]

+1

[pilou-]

Should not an error be raised when notify is used with includes_* ?

block don't support notify too and an error is raised ('notify' is not a valid attribute for a Block) when notify is used with block.

[christiang830]

For my understanding a notify at the include_* task should be triggered, when one of the included tasks is changed. I think that would greatly improve the functionality of these include tasks.

For example:
We have some roles that deploy applications which all need their own init scripts.
What i want now is a role (i call them utility role) "init_script" that i can include with include_role and the specific variables from the application roles. But If the init script has changed, sometimes i would need to retrigger a restart or similar. That is not possible at the moment.