[Nix-dev] upgrades and channels

[Sergey Mironov]

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 <mathijs at bluescreen303.nl>:
> Sergey Mironov <ierton at gmail.com> 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 <mathijs at bluescreen303.nl>:
>>> On Thu, Jul 5, 2012 at 11:07 PM, Eelco Dolstra
>>> <eelco.dolstra at logicblox.com> 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/
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>>>> http://lists.science.uu.nl/mailman/listinfo/nix-dev
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