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gesture at explanation of why binary caches exist

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Adam Joseph 2022-08-05 10:33:48 -07:00
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10
doc/manual/src/package-management/terminology.md
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@ -18,10 +18,12 @@ commands from the `NixOS/nix` implementation.</sup>
directory on another machine, accessed via `ssh` or
served by the `nix-serve` Perl script.
A *binary cache* is a specialized Nix store whose metadata and
signatures are kept in `.narinfo` files rather than in the Nix
database. Examples of binary caches include S3 buckets and the
[NixOS binary cache](https://cache.nixos.org).
A *binary cache* is a Nix store which uses a different format: its
metadata and signatures are kept in `.narinfo` files rather than in a
Nix database. This different format simplifies serving store objects
over the network, but cannot host builds. Examples of binary caches
include S3 buckets and the [NixOS binary
cache](https://cache.nixos.org).
A *substituter* is a store other than `/nix/store` from which Nix will
copy a store path instead of building it. Nix will not copy a store