nix3-flake-new(1) General Commands Manual nix3-flake-new(1)

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

nix flake new - create a flake in the specified directory from a template

nix flake new [option…] dest-dir

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Create a flake using the default template in the directory hello:

# nix flake new hello
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List available templates:

# nix flake show templates
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Create a flake from a specific template in the directory hello:

# nix flake new hello -t templates#trivial

This command creates a flake in the directory dest-dir, which must not already exist. It’s equivalent to:

# mkdir dest-dir
# cd dest-dir
# nix flake init

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--template / -t template
The template to use.

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--arg name expr
Pass the value expr as the argument name to Nix functions.
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--arg-from-file name path
Pass the contents of file path as the argument name to Nix functions.
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--arg-from-stdin name
Pass the contents of stdin as the argument name to Nix functions.
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--argstr name string
Pass the string string as the argument name to Nix functions.
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--debugger
Start an interactive environment if evaluation fails.
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--eval-store store-url
The URL of the Nix store to use for evaluation, i.e. to store derivations (.drv files) and inputs referenced by them.
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--impure
Allow access to mutable paths and repositories.
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--include / -I path
Add path to search path entries used to resolve lookup paths
This option may be given multiple times.
Paths added through -I take precedence over the nix-path configuration setting and the NIX_PATH environment variable.
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--override-flake original-ref resolved-ref
Override the flake registries, redirecting original-ref to resolved-ref.
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--debug
Set the logging verbosity level to ‘debug’.
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--log-format format
Set the format of log output; one of raw, internal-json, bar or bar-with-logs.
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--print-build-logs / -L
Print full build logs on standard error.
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--quiet
Decrease the logging verbosity level.
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--verbose / -v
Increase the logging verbosity level.

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--help
Show usage information.
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--offline
Disable substituters and consider all previously downloaded files up-to-date.
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--option name value
Set the Nix configuration setting name to value (overriding nix.conf).
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--refresh
Consider all previously downloaded files out-of-date.
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--repair
During evaluation, rewrite missing or corrupted files in the Nix store. During building, rebuild missing or corrupted store paths.
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--version
Show version information.

Note

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