But did you try Kirill Elagin's advice? NIX_PATH="foo=$HOME/code/nixos/nixpkgs" nix-env -f '<foo>' -qa '*'
It works for me (without touching ~/.nix-defexp) 2012/7/7 Mathijs Kwik <[email protected]>: > Sergey Mironov <[email protected]> writes: > >> Hi. Please, also take a look also on the topic "nix-env ignores >> NIX_PATH" - it contains some answers on NIX_PATH theme. >> >> +1 for nix-env/nixos-rebuild -I unification. I think their cmdline >> interface is too complicated. > > I've read that topic, but no answer there, except for confirmation on > nix-env not looking at NIX_PATH. > > The only way I could get what I want was by adding a symlink to > ~/.nix-defexprs. > > But I would much prefer to be able to do this using only an environment > variable or adding an extra switch. > > for now, just swapping .nix-defexprs works ok > > Thanks >> >> 2012/7/6 Mathijs Kwik <[email protected]>: >>> On Thu, Jul 5, 2012 at 11:07 PM, Eelco Dolstra >>> <[email protected]> wrote: >>>> Hi, >>>> >>>> On 05/07/12 17:02, Mathijs Kwik wrote: >>>> >>>>>> And a question about NIX_PATH: >>>>>> by default it's >>>>>> >>>>> NIX_PATH='/nix/var/nix/profiles/per-user/root/channels/nixos:nixpkgs=/etc/nixos/nixpkgs:nixos=/etc/nixos/nixos:nixos-config=/etc/nixos/configuration.nix:services=/etc/nixos/services' >>>>>> >>>>>> I understand the name=value pairs give the <name> syntax, but how does a >>>>>> plain >>>>> dirname (like the channels/nixos dir) get handled? >>>> >>>> See the description of NIX_PATH in nix-env(1). >>> >>> Nice, I should read the man pages more :) >>> >>>> >>>>>> I see it contains nixos and nixpkgs, but also a cryptic default.nix >>>> >>>> The default.nix just includes Nixpkgs so that nix-env can find the Nixpkgs >>>> copy >>>> in the NixOS channel. >>>> >>>>>> My local /home/mathijs/nix-dev dir contains nixos and nixpkgs. >>>>>> If I want to switch to using those instead of the channel (temporarily), >>>>>> can I >>>>> just point NIX_PATH there? >>>> >>>> Yes, or use -I (e.g. "nixos-rebuild switch -I ~mathijs/nix-dev"). >>> >>> This works for nixos-rebuild, but not for nix-env. >>> >>> Now, I know I can fiddle with the synlinks below ~/.nix-defexpr, but I >>> would prefer not to. >>> Say I can normally upgrade a package by >>> nix-env -iA nixos.pkgs.xterm >>> >>> Now I want to do this again, but now using my local ~/nix-dev. >>> >>> I tried >>> nix-env -iA nixos.pkgs.xterm -I ~/nix-dev >>> nix-env -iA nixos.pkgs.xterm -f ~/nix-dev >>> >>> NIX_PATH="~/nix-dev" nix-env -iA nixos.pkgs.xterm >>> NIX_PATH="nixpkgs=~/nix-dev/nixpkgs:nixos=~/nix-dev/nixos" nix-env -iA >>> nixos.pkgs.xterm >>> >>> none of these worked. >>> >>> >>>> >>>> -- >>>> Eelco Dolstra | LogicBlox, Inc. | http://nixos.org/~eelco/ >>>> _______________________________________________ >>>> nix-dev mailing list >>>> [email protected] >>>> http://lists.science.uu.nl/mailman/listinfo/nix-dev >>> _______________________________________________ >>> nix-dev mailing list >>> [email protected] >>> http://lists.science.uu.nl/mailman/listinfo/nix-dev _______________________________________________ nix-dev mailing list [email protected] http://lists.science.uu.nl/mailman/listinfo/nix-dev
