Propagate inputs with a specific output only?

Propagate inputs with a specific output only?

[Hartmut Goebel]

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Hi,

I have a package, written in Python, which consists of a command line
tool and a GUI. Since the GUI requires Qt, I would like to create two
outputs: "out", and "gui". Thus one could install the command line tool
without huge dependencies.

Now the GUI requires Qt, but for Python packages one needs to specify
the requirements as propagated inputs. How can I make some of the 
inputs propagated with output "gui" only?

-- 
Regards
Hartmut Goebel

| Hartmut Goebel          | h.goebel@crazy-compilers.com               |
| www.crazy-compilers.com | compilers which you thought are impossible |



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Re: Propagate inputs with a specific output only?

[Danny Milosavljevic]

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Hi Hartmut,

On Tue, 19 Nov 2019 17:32:14 +0100
Hartmut Goebel <h.goebel@crazy-compilers.com> wrote:

> I have a package, written in Python, which consists of a command line
> tool and a GUI. Since the GUI requires Qt, I would like to create two
> outputs: "out", and "gui". Thus one could install the command line tool
> without huge dependencies.
> 
> Now the GUI requires Qt, but for Python packages one needs to specify
> the requirements as propagated inputs. How can I make some of the 
> inputs propagated with output "gui" only?

I think it's

(propagated-inputs
  `(("foo" ,bar "baz")))

but I can't remember exactly.

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Re: Propagate inputs with a specific output only?

[Hartmut Goebel]

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Hi Danny,
> I think it's
> (propagated-inputs
>   `(("foo" ,bar "baz")))
>
> but I can't remember exactly.

This is for specifying another packages other output.

Maybe I should have added an example:

pdfposter:out -> propagates python-pypdf2

pdfposter:gui -> propagates qtbase, qtpolller, et.

-- 
Regards
Hartmut Goebel

| Hartmut Goebel          | h.goebel@crazy-compilers.com               |
| www.crazy-compilers.com | compilers which you thought are impossible |



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Re: Propagate inputs with a specific output only?

[Ludovic Courtès]

Hello,

Hartmut Goebel <h.goebel@crazy-compilers.com> skribis:

> I have a package, written in Python, which consists of a command line
> tool and a GUI. Since the GUI requires Qt, I would like to create two
> outputs: "out", and "gui". Thus one could install the command line tool
> without huge dependencies.
>
> Now the GUI requires Qt, but for Python packages one needs to specify
> the requirements as propagated inputs. How can I make some of the 
> inputs propagated with output "gui" only?

It’s not possible.  It’s mentioned in ‘TODO’ (which thus not entirely
useless :-)).

Ludo’.