Updating NixOS: Difference between revisions
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Add section on updating nixos if you are using flakes |
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== | == For non-flake configurations == | ||
=== Updating NixOS channels === | === Updating NixOS channels === | ||
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== Limiting the maximum number of running jobs == | == For flake based configurations == | ||
Because [[Flakes]] do not use channels and instead rely on explicitly defined inputs, updating a configuration involves modifying the system’s <code>flake.nix</code> to reference the desired versions of inputs. For example: | |||
{{file|flake.nix|nix| | |||
<nowiki> | |||
{ | |||
inputs = { | |||
nixpkgs.url = "github:nixos/nixpkgs/nixos-25.05"; # update version | |||
... | |||
}; | |||
... | |||
} | |||
</nowiki> | |||
}} | |||
Once the input URLs have been updated, refresh the flake lockfile with: | |||
<syntaxhighlight lang="console"> | |||
# nix flake update | |||
</syntaxhighlight> | |||
Finally, rebuild the system configuration to apply the changes: | |||
<syntaxhighlight lang="console"> | |||
# nixos-rebuild switch | |||
</syntaxhighlight> | |||
== Tips and tricks == | |||
=== Limiting the maximum number of running jobs === | |||
Sometimes, the update process may hang when the system CPU has a high number of cores. You can limit the maximum number of running jobs: | Sometimes, the update process may hang when the system CPU has a high number of cores. You can limit the maximum number of running jobs: | ||
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}; | }; | ||
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[[Category:NixOS]] | [[Category:NixOS]] | ||