Warning
This program is
experimental
and its interface is subject to change.
nix flake update - update flake lock
file
nix flake update [option…]
inputs…
- •
- 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 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.
This command updates the inputs in a lock file
(flake.lock). By default, 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 also creates lock files and adds missing inputs, but
is safer as it will never update inputs already in the lock file.
- •
- --flake
flake-url
- The flake to operate on. Default is the current directory.
- •
- --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 derivations
(.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.
- •
- --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.
- •
- --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.
- •
- --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).
- •
- --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.
- •
- --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.