Feature request: Config inheritance

[benlangfeld]

ShipIt currently implements replacement config files on a per-environment basis. This is useful when configuration is significantly different between environments.

When configuration differences are limited between environments, this can result in significant duplication. It would be useful for the more specific files to be able to contain an inheritance directive to reduce this duplication. This might look something like this:

shipit.production.yml:

inherit_from: shipit.yml

machine:
  environment:
    PUBLIC: true

shipit.yml:

machine:
  environment:
    PUBLIC: false

deploy:
  override:
    - ./some_deployment_process.sh ${PUBLIC}

...more shared stuff...

We'd be willing to contribute this upstream if it has a reasonable change of being merged. I'm looking for in-principle approval of a feature like this from a maintainer.

[casperisfine]

I'm looking for in-principle approval of a feature like this from a maintainer.

Yeah, in-principle it looks fine to me.

[benlangfeld]

I'm looking for in-principle approval of a feature like this from a maintainer.

Yeah, in-principle it looks fine to me.

Thanks, we'll have an implementation up next week for your review.