[Nix-dev] Some beginner Nix/nixpkgs questions

[Anderson Torres]

Well, I think you just want:

1 - The Nix package manager language - it is easy;
2 - A local package expression respository with your own idiosyncrasy.

To 2, it is just to create a Git local branch with your preferred
versions of your favourite packages. To build them, maybe setting up
an Hydra server would be helpful, or even the nix-serve idea from
above messages.

2015-08-05 16:16 GMT-03:00 Alex Dean <alex at snowplowanalytics.com>:
> Thanks Colin - that's very helpful! Lots to go on there.
>
> Cheers,
>
> Alex
>
> On Wed, Aug 5, 2015 at 7:35 PM, Colin Putney <colin at wiresong.com> wrote:
>>
>>
>>
>> On Wed, Aug 5, 2015 at 4:53 AM, Alex Dean <alex at snowplowanalytics.com>
>> wrote:
>>
>>>
>>> On reproducible deployments using git revisions - it solves the problem,
>>> but it feels like a very "out-of-band" solution.
>>
>>
>> You don't have to embed a git revision in your nix expressions; I don't
>> like that solution much either. What we do at BetterCompany is always refer
>> to nixpkgs by an expression like import <nixpkgs> {}.  Then we have
>> $NIX_PATH include nixpkgs=~/.nix-defexpr/channels/nixpkgs. That means we can
>> manage our version of nixpkgs using nix-channel.
>>
>> More generally, we include a default.nix and shell.nix in the root
>> directory of all our repositories, and then have another repository similar
>> to nixpkgs that bundles everything up, provides library functions etc.
>> That's also in $NIX_PATH, so we can use import <ourpkgs> {} to get access to
>> cross-repository dependencies, custom derivations functions etc.
>>
>> Finally, we tie it all together with Hydra, Nixops and a bit of custom
>> code to help with deployments.
>>
>> Hope this helps, and I'm happy to go into more detail if you have specific
>> questions.
>>
>> Colin
>
>
>
>
> --
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