nix-super/doc/manual/source/command-ref/nix-store/serve.md

# Name

`nix-store --serve` - serve local Nix store over SSH

# Synopsis

`nix-store` `--serve` [`--write`]

# Description

The operation `--serve` provides access to the Nix store over stdin and
stdout, and is intended to be used as a means of providing Nix store
access to a restricted ssh user.

The following flags are available:

- `--write`

  Allow the connected client to request the realization of
  derivations. In effect, this can be used to make the host act as a
  remote builder.

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# Examples

To turn a host into a build server, the `authorized_keys` file can be
used to provide build access to a given SSH public key:

```console
$ cat <<EOF >>/root/.ssh/authorized_keys
command="nice -n20 nix-store --serve --write" ssh-rsa AAAAB3NzaC1yc2EAAAA...
EOF
```