FAQ: Difference between revisions
imported>Symphorien mention overlays to change the version of packages used by nixos modules |
imported>Asymmetric add section on nixpkgs branches |
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<syntaxhighlight lang="bash">nix-instantiate --find-file nixpkgs</syntaxhighlight> | <syntaxhighlight lang="bash">nix-instantiate --find-file nixpkgs</syntaxhighlight> | ||
To know the commit, open the .version-suffix file in the nixpkgs location. The hash after the dot is the git commit. | To know the commit, open the .version-suffix file in the nixpkgs location. The hash after the dot is the git commit. | ||
== Nixpkgs branches == | |||
Branches on the nixpkgs repo have a relationship with [[channels]], but that relationship is not 1:1. | |||
Some branches are reified as channels (e.g. the <code>nixos-XX.YY</code> branches, or <code>nix(os|pkgs)-unstable</code>), whereas others are the starting point for those branches (e.g. the <code>master</code> or <code>release-XX.YY</code> branches). For example: | |||
* When a change in master needs to be backported to the current NixOS release, it is cherry-picked into the current <code>release-XX.YY</code> branch | |||
* [[Nix_channels#Channel_update_process|Hydra]] picks up this change, runs tests, and if those tests pass, updates the corresponding <code>nixos-XX.YY</code> branch, which is then reified as a channel. | |||
So in short, the <code>relase-XX.YY</code> branches have not been run through Hydra yet, whereas the <code>nixos-XX.YY</code> ones have. | |||
== There's an updated version for $software on nixpkgs but not in channels, how can I use it? == | == There's an updated version for $software on nixpkgs but not in channels, how can I use it? == | ||