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

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

Name
     nix flake show - show the outputs provided by a flake

Synopsis
     nix flake show [option...] flake-url

Examples
     *	Show the output attributes provided by the patchelf flake:

     github:NixOS/patchelf/f34751b88bd07d7f44f5cd3200fb4122bf916c7e
     aaaachecks
     a	 aaaaaarch64-linux
     a	 a   aaaabuild: derivation 'patchelf-0.12.20201207.f34751b'
     a	 aaaai686-linux
     a	 a   aaaabuild: derivation 'patchelf-0.12.20201207.f34751b'
     a	 aaaax86_64-linux
     a	     aaaabuild: derivation 'patchelf-0.12.20201207.f34751b'
     aaaapackages
     a	 aaaaaarch64-linux
     a	 a   aaaadefault: package 'patchelf-0.12.20201207.f34751b'
     a	 aaaai686-linux
     a	 a   aaaadefault: package 'patchelf-0.12.20201207.f34751b'
     a	 aaaax86_64-linux
     a	     aaaadefault: package 'patchelf-0.12.20201207.f34751b'
     aaaahydraJobs
     a	 aaaabuild
     a	 a   aaaaaarch64-linux: derivation 'patchelf-0.12.20201207.f34751b'
     a	 a   aaaai686-linux: derivation 'patchelf-0.12.20201207.f34751b'
     a	 a   aaaax86_64-linux: derivation 'patchelf-0.12.20201207.f34751b'
     a	 aaaacoverage: derivation 'patchelf-coverage-0.12.20201207.f34751b'
     a	 aaaarelease: derivation 'patchelf-0.12.20201207.f34751b'
     a	 aaaatarball: derivation 'patchelf-tarball-0.12.20201207.f34751b'
     aaaaoverlay: Nixpkgs overlay

Description
     This command shows the output attributes provided by the flake specified by
     flake  reference  flake-url. These are the top-level attributes in the out-
     puts of the flake, as well as lower-level attributes for some standard out-
     puts (e.g. packages or checks).

     With --json, the output is in a JSON representation suitable for  automatic
     processing by other tools.

Options
     *	--all-systems

	Show the contents of outputs for all systems.

     *	--json

	Produce  output in JSON format, suitable for consumption by another pro-
	gram.

     *	--legacy

	Show the contents of the legacyPackages output.

     *	--no-pretty

	Print compact JSON output on a single line, even when the  output  is  a
	terminal.   Some  commands  may  print multiple JSON objects on separate
	lines.

		 See `--pretty`.

     *	--pretty

	Print multi-line, indented JSON output for readability.

		 Default: indent if output is to a terminal.

		 This option is only effective when `--json` is also specified.

   Common evaluation options
     *	--arg name expr

	Pass the value expr as the argument name to Nix functions.

     *	--arg-from-file name path

	Pass the contents of file path as the argument name to Nix functions.

     *	--arg-from-stdin name

	Pass the contents of stdin as the argument name to Nix functions.

     *	--argstr name string

	Pass the string string as the argument name to Nix functions.

     *	--debugger

	Start an interactive environment if evaluation fails.

     *	--eval-store store-url

	The URL of the Nix store to use for evaluation, i.e.  to  store  deriva-
	tions (.drv files) and inputs referenced by them.

     *	--impure

	Allow access to mutable paths and repositories.

     *	--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.

     *	--override-flake original-ref resolved-ref

	Override the flake registries, redirecting original-ref to resolved-ref.

   Common flake-related options
     *	--commit-lock-file

	Commit changes to the flake's lock file.

     *	--inputs-from flake-url

	Use the inputs of the specified flake as registry entries.

     *	--no-registries

	Don't allow lookups in the flake registries.

	       DEPRECATED

	       Use --no-use-registries instead.

     *	--no-update-lock-file

	Do not allow any updates to the flake's lock file.

     *	--no-write-lock-file

	Do not write the flake's newly generated lock file.

     *	--output-lock-file flake-lock-path

	Write the given lock file instead of  flake.lock  within  the  top-level
	flake.

     *	--override-input input-path flake-url

	Override  a  specific  flake  input (e.g. dwarffs/nixpkgs). This implies
	--no-write-lock-file.

     *	--recreate-lock-file

	Recreate the flake's lock file from scratch.

	       DEPRECATED

	       Use nix flake update instead.

     *	--reference-lock-file flake-lock-path

	Read the given lock file instead  of  flake.lock  within  the  top-level
	flake.

     *	--update-input input-path

	Update	a  specific flake input (ignoring its previous entry in the lock
	file).

	       DEPRECATED

	       Use nix flake update instead.

   Logging-related options
     *	--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.

   Miscellaneous global options
     *	--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.

     *	--repair

	During	evaluation, rewrite missing or corrupted files in the Nix store.
	During building, rebuild missing or corrupted store paths.

     *	--version

	Show version information.

	Note

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

							      nix3-flake-show(1)

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