Uds Remote Store

R"(

Store URL format: daemon, unix://path

This store type accesses a Nix store by talking to a Nix daemon listening on the Unix domain socket path.

When path is not specified (i.e. the daemon pseudo-URL or bare unix://), the socket path is determined as follows:

1. The NIX_DAEMON_SOCKET_PATH environment variable, if set.

2. Otherwise, daemon-socket/socket within the state directory.

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