41 lines
950 B
Markdown
41 lines
950 B
Markdown
R""(
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# Examples
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* Set the `nixpkgs` flake identifier to a specific branch of Nixpkgs:
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```console
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# nix registry add nixpkgs github:NixOS/nixpkgs/nixos-20.03
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```
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* Pin `nixpkgs` to a specific revision:
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```console
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# nix registry add nixpkgs github:NixOS/nixpkgs/925b70cd964ceaedee26fde9b19cc4c4f081196a
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```
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* Add an entry that redirects a specific branch of `nixpkgs` to
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another fork:
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```console
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# nix registry add nixpkgs/nixos-20.03 ~/Dev/nixpkgs
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```
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* Add `nixpkgs` pointing to `github:nixos/nixpkgs` to your custom flake
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registry:
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```console
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nix registry add --registry ./custom-flake-registry.json nixpkgs github:nixos/nixpkgs
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```
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# Description
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This command adds an entry to the user registry that maps flake
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reference *from-url* to flake reference *to-url*. If an entry for
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*from-url* already exists, it is overwritten.
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Entries can be removed using [`nix registry
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remove`](./nix3-registry-remove.md).
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)""
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