9f9723b179
Take two of #40708 (4fe289860888668956b7e79e24efeb101c2f51d1). That PR attempted to bidirectionally default `config.nixpkgs.system` and `config.nixpkgs.localSystem.system` to each be updated by the other. But this is not possible with the way the module system works. Divergence in certain cases in inevitable. This PR is more conservative and just has `system` default `localSystem` and `localSystem` make the final call as-is. This solves a number of issues. - `localSystem` completely overrides `system`, just like with nixpkgs proper. There is no need to specify `localSystem.system` to clobber the old system. - `config.nixpkgs.localSystem` is exactly what is passed to nixpkgs. No spooky steps. - `config.nixpkgs.localSystem` is elaborated just as nixpkgs would so that all attributes are available, not just the ones the user specified. The remaining issue is just that `config.nixpkgs.system` doesn't update based on `config.nixpkgs.localSystem.system`. It should never be referred to lest it is a bogus stale value because `config.nixpkgs.localSystem` overwrites it. Fixes #46320
Nixpkgs is a collection of packages for the Nix package manager. It is periodically built and tested by the Hydra build daemon as so-called channels. To get channel information via git, add nixpkgs-channels as a remote:
% git remote add channels https://github.com/NixOS/nixpkgs-channels.git
For stability and maximum binary package support, it is recommended to maintain
custom changes on top of one of the channels, e.g. nixos-18.03 for the latest
release and nixos-unstable for the latest successful build of master:
% git remote update channels
% git rebase channels/nixos-18.03
For pull-requests, please rebase onto nixpkgs master.
NixOS Linux distribution source code is located inside
nixos/ folder.
- NixOS installation instructions
- Documentation (Nix Expression Language chapter)
- Manual (How to write packages for Nix)
- Manual (NixOS)
- Community maintained wiki
- Continuous package builds for unstable/master
- Continuous package builds for 18.03 release
- Tests for unstable/master
- Tests for 18.03 release
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