lix/src/nix/path-from-hash-part.md
Eelco Dolstra 61f89e954a
Add command 'nix store path-from-hash-part'
This exposes the Store::queryPathFromHashPart() interface in the CLI.
2022-10-18 16:51:12 +02:00

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R""(
# Examples
* Return the full store path with the given hash part:
```console
# nix store path-from-hash-part --store https://cache.nixos.org/ 0i2jd68mp5g6h2sa5k9c85rb80sn8hi9
/nix/store/0i2jd68mp5g6h2sa5k9c85rb80sn8hi9-hello-2.10
```
# Description
Given the hash part of a store path (that is, the 32 characters
following `/nix/store/`), return the full store path. This is
primarily useful in the implementation of binary caches, where a
request for a `.narinfo` file only supplies the hash part
(e.g. `https://cache.nixos.org/0i2jd68mp5g6h2sa5k9c85rb80sn8hi9.narinfo`).
)""