2021-02-26 15:55:54 +02:00
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R""(
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# Examples
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* Update the `nixpkgs` and `nix` inputs of the flake in the current
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directory:
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```console
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# nix flake lock --update-input nixpkgs --update-input nix
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2023-08-11 22:51:03 +03:00
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warning: creating lock file '/home/myself/repos/testflake/flake.lock':
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• Added input 'nix':
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'github:NixOS/nix/9fab14adbc3810d5cc1f88672fde1eee4358405c' (2023-06-28)
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• Added input 'nixpkgs':
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'github:NixOS/nixpkgs/3d2d8f281a27d466fa54b469b5993f7dde198375' (2023-06-30)
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2021-02-26 15:55:54 +02:00
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```
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# Description
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This command updates the lock file of a flake (`flake.lock`) so that
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it contains a lock for every flake input specified in
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`flake.nix`. Existing lock file entries are not updated unless
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required by a flag such as `--update-input`.
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Note that every command that operates on a flake will also update the
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lock file if needed, and supports the same flags. Therefore,
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```console
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# nix flake lock --update-input nixpkgs
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# nix build
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```
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is equivalent to:
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```console
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# nix build --update-input nixpkgs
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```
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Thus, this command is only useful if you want to update the lock file
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separately from any other action such as building.
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)""
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