You would need to do flake-info nixpkgs 21.05 instead.
It's an easy fix to remove the nixos- prefix in the source code line highlighted above, however I am not sure what else would need to be changed to ensure the search instance deploys correctly or wherever else this command is used still functions.
Despite what the docs say:
https://github.com/NixOS/nixos-search/blob/081e9e64fc454b5ab9b4805da5cf6eb512526147/flake-info/README.md?plain=1#L87
The command does not accept any Git reference, just ones that are valid when prepended with
nixos-. This is reflected/implemented here: https://github.com/NixOS/nixos-search/blob/081e9e64fc454b5ab9b4805da5cf6eb512526147/flake-info/src/data/source.rs#L123So something like
nixpkgs-unstablewould lead to a 404 request panic becausenixos-nixpkgs-unstableis not a real reference.So this example provided does not work:
https://github.com/NixOS/nixos-search/blob/081e9e64fc454b5ab9b4805da5cf6eb512526147/flake-info/README.md?plain=1#L94
You would need to do
flake-info nixpkgs 21.05instead.It's an easy fix to remove the
nixos-prefix in the source code line highlighted above, however I am not sure what else would need to be changed to ensure the search instance deploys correctly or wherever else this command is used still functions.