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The `helperFunctions` and `stdenvAdapters` both use the `pkgs` attribute as input, either to inherit some properties, either to use it as argument. The `pkgs` binding used in both expressions of the `helperFunctions` and `stdenvAdapters` is no longer the result of the `applyGlobalOverrides` function, but the argument of the `pkgsFun` function. The `pkgsFun` functions is called twice under `applyGlobalOverrides`, and in both cases, the first argument of `pkgsFun` correspond to the result of `applyGlobalOverrides`. Thus, this modification will change the bindings, but the evaluation of `<nixpkgs>`. A third call the `pkgsFun` exists under `overridePackages` in the set of all packages. Previously, the `helperFunctions` and `stdenvAdapaters` would use the functions defined as part of the default `<nixpkgs>` set. With this modification, the `helperFunctions` and the `stdenvAdapters` are now using the fix-point of the newly evaluated package set. This implies that this modification allow the user to use `overridePackages`, which is already not recommended for performance reasons, to override the inputs of the `helperFucntions` and `stdenvAdapaters` too, where this was not possible before.
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 git://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-15.09 for the latest
release and nixos-unstable for the latest successful build of master:
% git remote update channels
% git rebase channels/nixos-15.09
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)
- Nix Wiki
- Continuous package builds for unstable/master
- Continuous package builds for 15.09 release
- Tests for unstable/master
- Tests for 15.09 release
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