> Hello!
>
> I'm working on package which contains two software implementation of
> the same program - wip/xmlformat. The program itself is a script
> written on Perl and Ruby languages. Users may choose preferred
> implementation dependly on what they have installed on their system -
> Ruby or Perl.
>
> I wish to support author's idea of bilingual script and provide pkgsrc
> users to select what they want to install. Seems there are two ways to
> do this.
>
> 1) Split package on three chunks - xmlformat-ruby, xmlformat-perl,
> xmlformat-docs. Latest package will contain only support documentation,
> independly what kind of script you use. The xmlformat-ruby and
> xmlformat-perl will be bounded together via PKGALTERNATIVES framework.
>
> 2) Use variable named, say, USE_LANG which may be set to "ruby" or
> "perl" at the build stage. Resulted package name may be also dependent
> on the selected value for USE_LANG. The conflicts will be also handled.
>
> Any opinion, how to create such packages?

I would say: if the two implementations work independently, split the 
package in two: -ruby, -perl.  If you can choose between the two options, 
or have them both compiled at the same time, then use options.mk 
framework.

Kind regards,
Adam