[Nix-dev] Confused about packages

[Vladimír Čunát]

Hi.

On 05/15/2015 11:09 PM, Amy de Buitléir wrote:
> Q 1. Why do some packages have version numbers, and some don't? Are the ones
> without version numbers some sort of "virtual" package?

Missing version should be considered a bug, I believe, at least in most
cases. I versioned dmenu2 in d41798321.

> Q 2. Why can't I find some packages that I would expect to find? Are they
> "hidden"? For example, I have the following in my /etc/nixos/configuration.nix:
> 
>   environment.systemPackages = with pkgs; [
>     dmenu2
>     dzen2
>     haskellPackages.xmonad
>     haskellPackages.xmonadContrib
>     haskellPackages.xmonadExtras
>     wget
>     xsel
>   ];
> 
> But if someone hadn't told me the names to put there, how could I have found
> the names of the packages? Searching for them using nix-env didn't find them:

I consider that a bug, too.
Peti: I guess this would be because of haskellPackages missing
recurseIntoAttrs. I can't see it in there and no haskell packages are
shown for me on master.


Vladimir


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