nix3-flake-show

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
ââââchecks
â ââââaarch64-linux
â â ââââbuild: derivation ’patchelf-0.12.20201207.f34751b’
â ââââi686-linux
â â ââââbuild: derivation ’patchelf-0.12.20201207.f34751b’
â ââââx86_64-linux
â ââââbuild: derivation ’patchelf-0.12.20201207.f34751b’
ââââpackages
â ââââaarch64-linux
â â ââââdefault: package ’patchelf-0.12.20201207.f34751b’
â ââââi686-linux
â â ââââdefault: package ’patchelf-0.12.20201207.f34751b’
â ââââx86_64-linux
â ââââdefault: package ’patchelf-0.12.20201207.f34751b’
ââââhydraJobs
â ââââbuild
â â ââââaarch64-linux: derivation ’patchelf-0.12.20201207.f34751b’
â â ââââi686-linux: derivation ’patchelf-0.12.20201207.f34751b’
â â ââââx86_64-linux: derivation ’patchelf-0.12.20201207.f34751b’
â ââââcoverage: derivation ’patchelf-coverage-0.12.20201207.f34751b’
â âââârelease: derivation ’patchelf-0.12.20201207.f34751b’
â ââââtarball: derivation ’patchelf-tarball-0.12.20201207.f34751b’
ââââoverlay: 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 outputs of the flake, as well as lower-level attributes for some standard outputs (e.g. packages or checks).

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

Options

•

--json

Produce output in JSON format, suitable for consumption by another program.

•

--legacy

Show the contents of the legacyPackages output.

Common evaluation options:

•

--arg name expr

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

•

--argstr name string

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

•

--eval-store store-url

The Nix store to use for evaluations.

•

--impure

Allow access to mutable paths and repositories.

•

--include / -I path

Add path to the list of locations used to look up <...> file names.

•

--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. This option is deprecated; use --no-use-registries.

•

--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.

•

--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.

•

--update-input input-path

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