[Nix-dev] Documentation for multiple-outputs in nixpkgs

[Edward Tjörnhammar]

On Wed, May 11, 2016 at 11:16:42AM +0200, Vladimír Čunát wrote:
> On 05/11/2016 10:55 AM, Edward Tjörnhammar wrote:
> > What seems to be missing is some text detailing how the aggregating
> > attribute is related to its outputs. Specifically what is the difference
> > between referring to "attribute" and "attribute.out", when does it make
> > sense to just refer to the aggregating attribute and will "out" go
> > away(the default in the manual specifies "dev" being the default)?
>
> Ah, good catch. I took a note so I don't forget that.
>
> Shortly, the language makes *the first* output the default, when using
> the packages as values. That is currently "dev" in most cases, but it's
> possible "we" will change that to fit more use cases in string
> anti-quotations and other places https://github.com/NixOS/nixpkgs/pull/14766
>
> I personally don't see why "out" might go away.

Just to pester you :) I would like to have just one custom output, i.e.
'outputs = [ "quux" ]', but this errors out with "found no valid
variant!". This list of mandatory first outputs should probably also be
documented as such.

>
> --Vladimir
>
>



> _______________________________________________
> nix-dev mailing list
> nix-dev at lists.science.uu.nl
> http://lists.science.uu.nl/mailman/listinfo/nix-dev