nix3-config(1) General Commands Manual nix3-config(1)

Warning
This program is experimental and its interface is subject to change.

nix config - manipulate the Nix configuration

nix config [option…] subcommand

where subcommand is one of the following:

:

•
nix config show - show the Nix configuration or the value of a specific setting

:

•
nix config check - check your system for potential problems and print a PASS or FAIL for each check

•
--debug
Set the logging verbosity level to ‘debug’.
•
--log-format format
Set the format of log output; one of raw, internal-json, bar or bar-with-logs.
•
--print-build-logs / -L
Print full build logs on standard error.
•
--quiet
Decrease the logging verbosity level.
•
--verbose / -v
Increase the logging verbosity level.

•
--help
Show usage information.
•
--offline
Disable substituters and consider all previously downloaded files up-to-date.
•
--option name value
Set the Nix configuration setting name to value (overriding nix.conf).
•
--refresh
Consider all previously downloaded files out-of-date.
•
--version
Show version information.

Note

See man nix.conf for overriding configuration settings with command line flags.