[Nix-dev] Displaying package parameters

[Roger Qiu]

The demo works great now.
On 22/03/2016 1:14 AM, "Fabian Schmitthenner" <fabian at schmitthenner.eu>
wrote:

> No, at least I haven't planned it. Also, IMHO we'd need to patch nixpkgs
> with [1] to be able to do this (then you can interactively view
> parameters of packages etc. interactively with nix-repl with a few nice
> functions). Part of this has been proposed here:
> https://github.com/NixOS/nixpkgs/pull/13890, I will wait until this is
> decided to maybe think about it.
>
> btw @Roger Qiu: did you manage to get the demo working in the meantime?
>
> [1]
>
> https://github.com/fkz/nixos-homepage/blob/master/nixpkgs/packages.json-generation/nixpkgs.patch
>
> On 03/21/2016 01:30 PM, Roger Qiu wrote:
> > Just wanted to ask, is this package search enhanced with showing package
> > parameters planned to be added to the standard command line Nix query
> > tools? Or if it's already available and I haven't found it.
> >
> > On 9/03/2016 2:46 AM, Fabian Schmitthenner wrote:
> >> I've added a few features:
> >>
> >> - Search in 15.09 as well as 16.03
> >> - Search in parameters
> >> - A few more packages with parameters are recognized, e. g. firefox now
> >> shows parameters
> >> - Better error handling: If a parameter fails while trying to determine
> >> what kind it is, it's simply not displayed, but anything else is
> >>
> >> As before, demo can be foud here:
> >> http://schmitthenner.eu/nixos-homepage/nixos/packages.html. (compare to
> >> official version: https://nixos.org/nixos/packages.html). You might
> need
> >> to clear your cache to see the new version.
> >>
> >> I've also added a pull request:
> >> https://github.com/NixOS/nixos-homepage/pull/78. Feel free to comment
> >> either on the list or on github.
> >>
> >> Have a great day!
> >>
> >> Fabian
> >>
> >> On 02/29/2016 03:59 AM, Fabian Schmitthenner wrote:
> >>> Hi!
> >>>
> >>> I just wanted to share that I tried displaying package parameters on
> the
> >>> nixos homepage and the current result can be seen here:
> >>> http://schmitthenner.eu/nixos-homepage/nixos/packages.html.
> >>>
> >>> When you click on a package, you hopefully see its parameter. This uses
> >>> a heruristic to try to figure out which parameters are packages (and
> >>> thus not displayed) and which are not (and thus displayed) that goes
> >>> roughly as follows:
> >>>
> >>> - If the parameter is instantiated - either implicitly or explicitly -
> >>> by callPackage, we look at the value and if it's a derivation, or a
> list
> >>> or attrset set of derivations, or a function it's not displayed
> >>> - Otherwise, it's displayed
> >>>
> >>> I think there was a discussion about this a short while ago, but I
> >>> couldn't find it.
> >>>
> >>> Please let me know what you think and if we might want a (more
> elaborate
> >>> version, e. g. also displaying the value of default arguments that
> >>> aren't changed by callPackage, which requires an other change to nix
> >>> because this info is currently not available, we only know if the
> >>> argument is optional or not afaik) of this on our official website.
> >>>
> >>> Source code can be found on
> >>> https://github.com/NixOS/nixos-homepage/compare/master...fkz:master
> >>> Technically, I patched nixpkgs customization, so we not only get the
> >>> override... functions, but also the original parameters and the
> original
> >>> function.
> >>> Furthermore, this uses a patched version of nix which allows catching
> >>> errors inside nix (added a primop __catch) that also seems useful more
> >>> generally (when polished) (see
> https://github.com/fkz/nix/tree/catch-throw).
> >>>
> >>> Fabian
> >>>
> >> _______________________________________________
> >> nix-dev mailing list
> >> nix-dev at lists.science.uu.nl
> >> http://lists.science.uu.nl/mailman/listinfo/nix-dev
>
>
>
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