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Document "final" semantics

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Eelco Dolstra 2024-11-06 13:05:37 +01:00
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src/nix/flake.md
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@ -666,6 +666,11 @@ following fields:
other attributes are necessary because they provide information not
stored in the store path.
The attributes in `locked` are considered "final", meaning that they are the only ones that are passed via the arguments of the `outputs` function of a flake.
For instance, if `locked` contains a `lastModified` attribute while the fetcher does not return a `lastModified` attribute, then the `lastModified` attribute will be passed to the `outputs` function.
Conversely, if `locked` does *not* contain a `lastModified` attribute while the fetcher *does* return a `lastModified` attribute, then no `lastModified` attribute will be passed.
If `locked` contains a `lastModifed` attribute and the fetcher returns a `lastModified` attribute, then they must have the same value.
* `flake`: A Boolean denoting whether this is a flake or non-flake
dependency. Corresponds to the `flake` attribute in the `inputs`
attribute in `flake.nix`.