[Nix-dev] garbage collecting source (was: btrfs-progs (was:contributing to nixpkgs/nixos))

[Florian Friesdorf]

On Tue, 20 Dec 2011 12:05:00 +0100, Florian Friesdorf <flo at chaoflow.net> wrote:
> On Tue, 20 Dec 2011 08:27:16 +0400, Michael Raskin <7c6f434c at mail.ru> wrote:
> > 
> > >> Hm, sorry, piled too much into one line
> > >> 
> > >> nix-store -r $(nix-instanctiate /etc/nixos/nixos -A system)
> > >
> > >For me that just prints the path to the system derivation - does that
> > >mean that everything is instantiated?
> > 
> > Ah, that's what I missed.
> > 
> > nix-store -qR $(nix-instantiate /etc/nixos/nixos -A system) | xargs nix-store -r
> 
> I added it to the FAQ:
> https://nixos.org/wiki/FAQ#How_to_keep_build-time_dependencies_around_.2F_be_able_to_rebuild_while_being_offline
> 
> In the manpage of nix-store I found '--include-outputs' and am not fully
> sure about its effect. By diffing I found that it mostly lists tarballs
> in the store and I assume I do not need to realise them explicitly as
> they are realised by realising the closure's paths and kept by having
> gc-keep-outputs - correct? Nomenclature violated?

Interestingly it makes no difference when used with my user profile:
nix-store -qR --include-outputs ~/.nix-profile

> > I just use nix-reduce build and so I sometimes forget what Nix commands
> > are actually used.
> 
> What is nix-reduce / how do I get it and more information about it? I
> found some references to it, but it's not in my path and grep/find on
> /etc/nixos also did not reveal it.
> 
> Thx a lot - already very happy over here!
-- 
Florian Friesdorf <flo at chaoflow.net>
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