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 (./nix3-registry-remove.md).

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.

       • --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.

                                                                             nix3-registry-add(1)