[Nix-dev] nix-build $CONFIG -A package

[Shea Levy]

On 04/13/2012 01:04 PM, Sergey Mironov wrote:
> Hi!
>
> I used to call function
>
> fetch () {
> 	nix-build $NIXPKGS_ALL -A $1.src --show-trace
> }
>
> to download a source tarball for a package.
>
> But it doesn't work anymore! That is because of absence of
> $NIXPKGS_ALL in my environment. How to fix it? I've tried the
> following, also unsuccessfully:
>
> $ nix-build /etc/nixos/configuration.nix -A firefox.src --show-trace
> error: cannot auto-call a function that has an argument without a
> default value (`config')
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If you're using NixOS (which I suspect you are based on your attempt), 
you can do something like this with a current version of nix:

$ nix-build "<nixpkgs>" -A firefox.src --show-trace