NixOS: Difference between revisions
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In addition to declarative system configuration, NixOS offers imperative commands to manage ''user specific'' package management. These operations are managed by the <code>nix-env</code> command line tool. The following is a summary of some common operations that can be performed with it: | In addition to declarative system configuration, NixOS offers imperative commands to manage ''user specific'' package management. These operations are managed by the <code>nix-env</code> command line tool. The following is a summary of some common operations that can be performed with it: | ||
'''Common <code>nix-env</code> Commands:''' | |||
{| class="wikitable" | {| class="wikitable" | ||
|Searching for packages | |Searching for packages | ||
|<code>nix-env -qaP '.*packagename.*'</code> | |<code>nix-env -qaP '.*packagename.*'</code> | ||
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Nix ''channels'' are mechanisms for distributing Nix expressions alongside the associated binaries for them. Nix channels are automatically updated once a certain tests are passed in Nixpkgs' Hydra instance. | Nix ''channels'' are mechanisms for distributing Nix expressions alongside the associated binaries for them. Nix channels are automatically updated once a certain tests are passed in Nixpkgs' Hydra instance. | ||
'''Channel Types:''' | |||
{| class="wikitable" | {| class="wikitable" | ||
|Stable | |||
|Stable | |||
|''nixos-17.03'' | |''nixos-17.03'' | ||
|These receive conservative updates for fixing bugs and security vulnerabilities. | |These receive conservative updates for fixing bugs and security vulnerabilities. | ||
|- | |- | ||
| | |Unstable | ||
|''nixos-unstable'' | |''nixos-unstable'' | ||
| Corresponds to the main development branch of Nixpkgs, delivering the latest tested updates. | | Corresponds to the main development branch of Nixpkgs, delivering the latest tested updates. | ||
|- | |- | ||
|Small | |Small | ||
|''nixos-17.03-small'' or ''nixos-unstable-small'' | |''nixos-17.03-small'' or ''nixos-unstable-small'' | ||
| Identical to their normal namesakes, but containing fewer binaries. This means they update faster but require more to be built from source. | | Identical to their normal namesakes, but containing fewer binaries. This means they update faster but require more to be built from source. | ||