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This module permits to preload Docker image in a VM in order to reduce OIs on file copies. This module has to be only used in testing environments, when the test requires several Docker images such as in Kubernetes tests. In this case, `virtualisation.dockerPreloader.images` can replace the `services.kubernetes.kubelet.seedDockerImages` options. The idea is to populate the /var/lib/docker directory by mounting qcow files (we uses qcow file to avoid permission issues) that contain images. For each image specified in config.virtualisation.dockerPreloader.images: 1. The image is loaded by Docker in a VM 2. The resulting /var/lib/docker is written to a QCOW file This set of QCOW files can then be used to populate the /var/lib/docker: 1. Each QCOW is mounted in the VM 2. Symlink are created from these mount points to /var/lib/docker 3. A /var/lib/docker/image/overlay2/repositories.json file is generated 4. The docker daemon is started.
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-18.09 for the latest
release and nixos-unstable for the latest successful build of master:
% git remote update channels
% git rebase channels/nixos-18.09
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)
- Community maintained wiki
- Continuous package builds for unstable/master
- Continuous package builds for 18.09 release
- Tests for unstable/master
- Tests for 18.09 release
Communication:
Note: MIT license does not apply to the packages built by Nixpkgs, merely to the package descriptions (Nix expressions, build scripts, and so on). It also might not apply to patches included in Nixpkgs, which may be derivative works of the packages to which they apply. The aforementioned artifacts are all covered by the licenses of the respective packages.