[Distutils] Buildout question

[Jim Fulton]

On Mar 9, 2007, at 5:17 PM, Scott Robertson wrote:

> Is there a way to create a dummy part/recipe that depends on another
> part without having to refer to one of the options of other part?

No, but you could hide the reference in the recipe.

> Similar to make's concept of a phony target I suppose.
>
> I'm looking to make a buildout script that looks something like this:
>
> [buildout]
> parts = all
>
> [all]
> recipe=depends
> parts = linux win32 mac
>
> [linux]
> recipe=depends
> parts=common-part linux-specific-part
>
> [win32]
> recipe=depends
> parts=common-part win32-specific-part-1 win32-specific-part-2
>
> [mac]
> recipe=depends
> parts=common-part mac-specific-part
>
> ... real part specifications would follow ...
>
>
>
> So as you can see, I'm trying to make a buildout script that will
> build three different variations of the same project for the three
> major platforms  Windows, Mac and Linux from the same build machine.
>
> Depending on the platform I'm building for I may build  parts in my
> buildout file. Ideally from the command line I'd like to do something
> like this.
>
> $ buildout install linux
>
> or
>
> $ buildout install mac
> or
>
> $ buildout install win32
>
> or
> $ buildout install all
>
>
> Is this possible to do in recipe or is there some other mechanism I
> could use to do this dependency? The refering to a variable of another
> part sort of works for this, but I think it would be easier to read
> (and less typing) if I could epxlicitly declare that a given part
> depends on another.

You don't have to refer to a variable. Refering to a section is enough.
For example:

   class Depends:

       def __init__(self, buildout, name, options):
           for part in options['parts']:
               buildout[part]

       def install(self):
           pass

       update = install

Jim

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