Pillars should be able to cross-reference to other pillars

[syphernl]

My setup contains a global pillar that applies on * and a per-role one applied via role*.domain.tld.
In my global role there is a reference to a file containing master hostnames:

base:
    '*':
        - servers.masters
    'dns*':
        - match: pcre
        - server.localvars.dns

In the role-applied set (e.g. DNS servers) I want to be able to reference back to there.
So if the masterfile contains:

master_server: server1.master.tld

I'd like to be able to do this in the lower applied pillars:

some_global_var: bar
{% if grains['fqdn'] == pillar['master_server'] %}
some_local_var: foobarfoo
{% else %}
some_local_var: nothanks
{% endif %}

This allows for greater flexibility, otherwise I'd have to hardcode the master_server parameter in the localvars which I'm trying to avoid.

[SEJeff]

This would be a bit hairy to implement as pillar data is essentially merged together and then rendered as a whole. I'm not even 100% sure if this could be done.

[thatch45]

I see where you are coming from, but I am not sure this is going to be possible given the current setup, since pillar data is not read in a linear fashion, and there is not requisite construct. I will move this to 2.0.0 and think about how it can be done.

[stale]

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