2020-08-19 16:28:04 +00:00
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# Name
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`nix.conf` - Nix configuration file
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# Description
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By default Nix reads settings from the following places:
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- The system-wide configuration file `sysconfdir/nix/nix.conf` (i.e.
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`/etc/nix/nix.conf` on most systems), or `$NIX_CONF_DIR/nix.conf` if
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`NIX_CONF_DIR` is set. Values loaded in this file are not forwarded
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to the Nix daemon. The client assumes that the daemon has already
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loaded them.
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- If `NIX_USER_CONF_FILES` is set, then each path separated by `:`
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will be loaded in reverse order.
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Otherwise it will look for `nix/nix.conf` files in `XDG_CONFIG_DIRS`
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and `XDG_CONFIG_HOME`. If these are unset, it will look in
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`$HOME/.config/nix.conf`.
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2020-10-21 15:04:36 +00:00
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- If `NIX_CONFIG` is set, its contents is treated as the contents of
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2020-10-19 21:08:50 +00:00
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a configuration file.
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2020-08-19 16:28:04 +00:00
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The configuration files consist of `name =
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value` pairs, one per line. Other files can be included with a line like
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`include
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path`, where *path* is interpreted relative to the current conf file and
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a missing file is an error unless `!include` is used instead. Comments
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start with a `#` character. Here is an example configuration file:
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keep-outputs = true # Nice for developers
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keep-derivations = true # Idem
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You can override settings on the command line using the `--option` flag,
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e.g. `--option keep-outputs
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false`.
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The following settings are currently available:
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