[Nix-dev] Confused about packages

[Roger Qiu]

Wouldn't it be better for version numbers to always exist? That way it's 
simple to know the exact version of your package that you're installing, 
even if it's just one package. I'd prefer for it not to be random.

On 16/05/2015 7:27 AM, Vladimír Čunát wrote:
> 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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