Refactor environment setup

[mbrodala]

ATM environment setup for Composer is spread across init.pp, project.pp and repository.pp.

This should be unified to reduce repetition. Global defaults should be defined in one central location with the option to override them locally for single composer invocations.

Any suggestions on this?

[igalic]

how about the globals pattern as it's used in puppetlabs-postgresql :P

[mbrodala]

Got some details on this? On a quick glimpse all I can see is the params pattern.

[igalic]

https://github.com/puppetlabs/puppetlabs-postgresql/#class-postgresqlglobals uses globals for overrides. in the server.pp (which inherits from params, which sets the platform defaults).
the module uses pick(), extensively to make the correct decision).

for complex modules, that still allow people to make overrides, i find this to be a very good pattern.
for less complex modules, a good pattern is also to just merge(), jfryman-nginx uses that.