Name

       nix registry add - add/replace flake in user flake registry

Synopsis

       nix registry add [option…] from-url to-url

Examples

       •  Set the nixpkgs flake identifier to a specific branch of Nixpkgs:

       # nix registry add nixpkgs github:NixOS/nixpkgs/nixos-20.03

       •  Pin nixpkgs to a specific revision:

       # nix registry add nixpkgs github:NixOS/nixpkgs/925b70cd964ceaedee26fde9b19cc4c4f081196a

       •  Add an entry that redirects a specific branch of nixpkgs to another fork:

       # nix registry add nixpkgs/nixos-20.03 ~/Dev/nixpkgs

       •  Add nixpkgs pointing to github:nixos/nixpkgs to your custom flake registry:

       nix registry add --registry ./custom-flake-registry.json nixpkgs github:nixos/nixpkgs

Description

       This command adds an entry to the user registry that maps flake reference from-url to flake reference to-
       url. If an entry for from-url already exists, it is overwritten.

       Entries can be removed using nix registry remove.

Options

       •  --registry registry

          The registry to operate on.

   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.

       •  --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.

   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-registry-add(1)