[Nix-dev] transition to pure system

[Florian Friesdorf]

On Tue, Jan 04, 2011 at 04:39:23PM -0700, Kevin Quick wrote:
> On Tue, 04 Jan 2011 14:10:15 -0700, <7c6f434c at mail.ru> wrote:
> 
> >export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/var/run/current-system/sw/lib"
> >export NIX_LDFLAGS="$NIX_LDFLAGS -L /var/run/current-system/sw/lib"
> >export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE -I /var/run/current-system/sw/include"
> >export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/var/run/current-system/sw/lib/pkgconfig"
> 
> Can someone explain the specific difference between
> /var/run/current-system/sw/X and $HOME/.nix-profile/X paths?

The former is the active system profile, the latter your user's active
user profile. A profile is fully self-contained and does not depend on
other profiles.

> I had assumed the former was only the tools involved in the
> XXX-system.drv (from /etc/nix/configuration.nix) and that the latter
> was the superset of that and anything I'd added to my user's profile
> via nix-env -i but I'm not sure if that's correct.

Not the superset, but only what you have added to your user's profile.
Your user's profile bin directory is listed before the system profile's
bin directory in your PATH, check: echo $PATH.

-- 
Florian Friesdorf <flo at chaoflow.net>
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