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nix3-flake-update(1) General Commands Manual nix3-flake-update(1) Warning This program is experimental <../../development/experimental- features.md#xp-feature-nix-command> and its interface is subject to change. Name nix flake update - update flake lock file Synopsis nix flake update [option...] inputs... Examples • Update all inputs (i.e. recreate the lock file from scratch): # nix flake update warning: updating lock file '/home/myself/repos/testflake/flake.lock': Updated input 'nix': 'github:NixOS/nix/9fab14adbc3810d5cc1f88672fde1eee4358405c' (2023-06-28) 'github:NixOS/nix/8927cba62f5afb33b01016d5c4f7f8b7d0adde3c' (2023-07-11) Updated input 'nixpkgs': 'github:NixOS/nixpkgs/3d2d8f281a27d466fa54b469b5993f7dde198375' (2023-06-30) 'github:NixOS/nixpkgs/a3a3dda3bacf61e8a39258a0ed9c924eeca8e293' (2023-07-05) • Update only a single input: # nix flake update nixpkgs warning: updating lock file '/home/myself/repos/testflake/flake.lock': Updated input 'nixpkgs': 'github:NixOS/nixpkgs/3d2d8f281a27d466fa54b469b5993f7dde198375' (2023-06-30) 'github:NixOS/nixpkgs/a3a3dda3bacf61e8a39258a0ed9c924eeca8e293' (2023-07-05) • Update multiple inputs: # nix flake update nixpkgs nixpkgs-unstable warning: updating lock file '/home/myself/repos/testflake/flake.lock': Updated input 'nixpkgs': 'github:nixos/nixpkgs/8f7492cce28977fbf8bd12c72af08b1f6c7c3e49' (2024-09-14) 'github:nixos/nixpkgs/086b448a5d54fd117f4dc2dee55c9f0ff461bdc1' (2024-09-16) Updated input 'nixpkgs-unstable': 'github:nixos/nixpkgs/345c263f2f53a3710abe117f28a5cb86d0ba4059' (2024-09-13) 'github:nixos/nixpkgs/99dc8785f6a0adac95f5e2ab05cc2e1bf666d172' (2024-09-16) • Update only a single input of a flake in a different directory: # nix flake update nixpkgs --flake ~/repos/another warning: updating lock file '/home/myself/repos/another/flake.lock': Updated input 'nixpkgs': 'github:NixOS/nixpkgs/3d2d8f281a27d466fa54b469b5993f7dde198375' (2023-06-30) 'github:NixOS/nixpkgs/a3a3dda3bacf61e8a39258a0ed9c924eeca8e293' (2023-07-05) Note When trying to refer to a flake in a subdirectory, write ./another instead of another. Otherwise Nix will try to look up the flake in the registry. Description This command updates the inputs in a lock file (flake.lock). By de- fault, all inputs are updated. If the lock file doesn't exist yet, it will be created. If inputs are not in the lock file yet, they will be added. Unlike other nix flake commands, nix flake update takes a list of names of inputs to update as its positional arguments and operates on the flake in the current directory. You can pass a different flake-url with --flake to override that default. The related command nix flake lock <../../command-ref/new- cli/nix3-flake-lock.md> also creates lock files and adds missing in- puts, but is safer as it will never update inputs already in the lock file. Options • --flake <#opt-flake> flake-url The flake to operate on. Default is the current directory. Common evaluation options • --arg <#opt-arg> name expr Pass the value expr as the argument name to Nix functions. • --arg-from-file <#opt-arg-from-file> name path Pass the contents of file path as the argument name to Nix func- tions. • --arg-from-stdin <#opt-arg-from-stdin> name Pass the contents of stdin as the argument name to Nix functions. • --argstr <#opt-argstr> name string Pass the string string as the argument name to Nix functions. • --debugger <#opt-debugger> Start an interactive environment if evaluation fails. • --eval-store <#opt-eval-store> store-url The URL of the Nix store <../../store/types/index.md#store-url- format> to use for evaluation, i.e. to store derivations (.drv files) and inputs referenced by them. • --impure <#opt-impure> Allow access to mutable paths and repositories. • --include <#opt-include> / -I path Add path to search path entries used to resolve lookup paths <../../language/constructs/lookup-path.md> This option may be given multiple times. Paths added through -I take precedence over the nix-path configura- tion setting <../../command-ref/conf-file.md#conf-nix-path> and the NIX_PATH environment variable <../../command-ref/env-common.md#env- NIX_PATH>. • --override-flake <#opt-override-flake> original-ref resolved-ref Override the flake registries, redirecting original-ref to resolved- ref. Common flake-related options • --commit-lock-file <#opt-commit-lock-file> Commit changes to the flake's lock file. • --inputs-from <#opt-inputs-from> flake-url Use the inputs of the specified flake as registry entries. • --no-registries <#opt-no-registries> Don't allow lookups in the flake registries. DEPRECATED Use --no-use-registries <../../command-ref/conf-file.md#conf- use-registries> instead. • --output-lock-file <#opt-output-lock-file> flake-lock-path Write the given lock file instead of flake.lock within the top-level flake. • --override-input <#opt-override-input> input-path flake-url Override a specific flake input (e.g. dwarffs/nixpkgs). This implies --no-write-lock-file. • --recreate-lock-file <#opt-recreate-lock-file> Recreate the flake's lock file from scratch. DEPRECATED Use nix flake update <../../command-ref/new-cli/nix3-flake- update.md> instead. • --reference-lock-file <#opt-reference-lock-file> flake-lock-path Read the given lock file instead of flake.lock within the top-level flake. • --update-input <#opt-update-input> input-path Update a specific flake input (ignoring its previous entry in the lock file). DEPRECATED Use nix flake update <../../command-ref/new-cli/nix3-flake- update.md> instead. Logging-related options • --debug <#opt-debug> Set the logging verbosity level to `debug'. • --log-format <#opt-log-format> format Set the format of log output; one of raw, internal-json, bar or bar- with-logs. • --print-build-logs <#opt-print-build-logs> / -L Print full build logs on standard error. • --quiet <#opt-quiet> Decrease the logging verbosity level. • --verbose <#opt-verbose> / -v Increase the logging verbosity level. Miscellaneous global options • --help <#opt-help> Show usage information. • --offline <#opt-offline> Disable substituters and consider all previously downloaded files up-to-date. • --option <#opt-option> name value Set the Nix configuration setting name to value (overriding nix.conf). • --refresh <#opt-refresh> Consider all previously downloaded files out-of-date. • --repair <#opt-repair> During evaluation, rewrite missing or corrupted files in the Nix store. During building, rebuild missing or corrupted store paths. • --version <#opt-version> Show version information. Note See man nix.conf <../../command-ref/conf-file.md#command-line-flags> for overriding configuration settings with command line flags. nix3-flake-update(1)
Name | Synopsis | Examples | Description | Options
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