Re: [Module-build-general] A mini-language for dependencies?

[Autrijus T. <aut...@au...>]

On Tue, Feb 18, 2003 at 10:49:46PM -0600, Ken Williams wrote:
> I don't have a lot of experience designing mini-languages, but I'm=20
> thinking it should do at least the following:
>=20
>  * Allow arbitrary boolean combinations of dependency on arbitrary
>    versions of modules
>=20
>  * Allow declarative branching based on perl version or OS
>=20
>  * Allow dependency specification based on feature sets, similar
>    to the way ExtUtils::AutoInstall groups things
>=20
>  * Let the author specify *why* a certain dependency is necessary,
>    especially in the case of optional dependencies

Below please find a sample of my current proposal of formalizing
EU::AI parameters into YAML so it can be written insite META.yml,
based on today's IRC discussion.  I hope it to be self-descriptory.

The top-level "build_requires/recommends/requires" keys corresponds
with the -core feature in EU::AI parlance.

Comments welcome!

Thanks,
/Autrijus/

--- #YAML:1.0
build_requires:
  Test::More: {}
recommends:
  Acme::ComeFrom:
    alternate:
      Acme::ComeWith:
        version: 0.05
    reason: "I really likes it"
    version: 0.02
requires:
  Some::Module:
    arch: MSWin32
    perl: 5.6.0
    version: 1.04
  Other::Module:
    version 1.53
  arch: '!Solaris'
  perl: 5.005
features:
  - name: This is feature one
    requires:
      arch: MSWin32
      Module::Foo:
        perl: '<5.6.0'
        version: 2.04
  - name: Feature two
    requires:
      Lingua::ZH::TaBE: {}
    recommends:
      Lingua::EN::Inflect:
        arch: '!MSWin32'
        version: 3.03