44 lines
1.3 KiB
Markdown
44 lines
1.3 KiB
Markdown
Nix supports different types of stores:
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@store-types@
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## Store URL format
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Stores are specified using a URL-like syntax. For example, the command
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```console
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# nix path-info --store https://cache.nixos.org/ --json \
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/nix/store/a7gvj343m05j2s32xcnwr35v31ynlypr-coreutils-9.1
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```
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fetches information about a store path in the HTTP binary cache
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located at https://cache.nixos.org/, which is a type of store.
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Store URLs can specify **store settings** using URL query strings,
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i.e. by appending `?name1=value1&name2=value2&...` to the URL. For
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instance,
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```
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--store ssh://machine.example.org?ssh-key=/path/to/my/key
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```
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tells Nix to access the store on a remote machine via the SSH
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protocol, using `/path/to/my/key` as the SSH private key. The
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supported settings for each store type are documented below.
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The special store URL `auto` causes Nix to automatically select a
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store as follows:
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* Use the [local store](#local-store) `/nix/store` if `/nix/var/nix`
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is writable by the current user.
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* Otherwise, if `/nix/var/nix/daemon-socket/socket` exists, [connect
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to the Nix daemon listening on that socket](#local-daemon-store).
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* Otherwise, on Linux only, use the [local chroot store](#local-store)
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`~/.local/share/nix/root`, which will be created automatically if it
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does not exist.
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* Otherwise, use the [local store](#local-store) `/nix/store`.
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