Local Daemon Store

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.

Settings

• log

  Directory where Nix stores log files.

  Defaults to NIX_LOG_DIR when root is not set.

  Default: /nix/var/log/nix

• max-connection-age

  Maximum age of a connection before it is closed.

  Default: 4294967295

• max-connections

  Maximum number of concurrent connections to the Nix daemon.

  Default: 1

• path-info-cache-size

  Size of the in-memory store path metadata cache.

  Default: 65536

• priority

  Priority of this store when used as a substituter. A lower value means a higher priority.

  Default: 0

• real

  Physical path of the Nix store.

  Defaults to store when root is not set.

  Default: /nix/store

• root

  Directory prefixed to all other paths.

  Default: ``

• state

  Directory where Nix stores state.

  Defaults to NIX_STATE_DIR when root is not set.

  Default: /dummy

• store

  Logical location of the Nix store, usually /nix/store.

  Defaults to NIX_STORE_DIR if unset.

  Note that you can only copy store paths between stores if they have the same store setting.

  Default: /nix/store

• system-features

  Optional system features available on the system this store uses to build derivations.

  Example: "kvm"

  Default: machine-specific

• trusted

  Whether paths from this store can be used as substitutes even if they are not signed by a key listed in the trusted-public-keys setting.

  Default: false

• want-mass-query

  Whether this store can be queried efficiently for path validity when used as a substituter.

  Default: false