(Solved) Nix-channel --update : error?

Help
1 
$ nix-channel --update               
error: unable to download 'https://nixos.org/channels/channel-24.05': HTTP error 404

       response body:

       <html>
       <head><title>404 Not Found</title></head>
       <body>
       <h1>404 Not Found</h1>
       <ul>
       <li>Code: NoSuchKey</li>
       <li>Message: The specified key does not exist.</li>
       <li>Key: channel-24.05</li>
       <li>RequestId: XXN6P4F5QNWSTB9K</li>
       <li>HostId: Iou/eu71PqAMv09CtjUbM0A4bogFH58n22L8vmmXhi+M9H7eDf6rvWAxZsSlGSdsGc0/VoNiosc=</li>
       </ul>
       <hr/>
       </body>
       </html>

How can this problem be solved?

2

Does nix-channel --list show channel-24.05? If yes, you have the wrong prefix. It should be nixos-24.05, not channel-24.05.

You can fix this with the following commands:

nix-channel --remove $(nix-channel --list | awk '{print $1}')
nix-channel --add https://nixos.org/channels/nixos-24.05 nixos

Pro tip: In the last command, change nixos-24.05 to nxios-24.11 since 24.11 is the new version of NixOS which came out last week and the old version (24.05) will go end of life on December 2024.

3

Thank you very much, the problem is solved.

╭─imbios@nixos in ~ 
╰$ nix-channel --list                 
home-manager https://github.com/nix-community/home-manager/archive/release-24.11.tar.gz
nixos https://nixos.org/channels/nixos-24.11
╭─imbios@nixos in ~ 
╰$ sudo nix-channel --list                                                                                  
nixos https://nixos.org/channels/nixos-24.11
4

Great, please mark the thread resolved.

5

You should probably delete the nixos channel for your user, just keep the one for root. Otherwise you’ll have to two similar-looking channels out of sync with each other.

6

I’m a little confused, I try to delete it, but it stays in the system.

╭─imbios@nixos in ~ 
╰$ nix-channel --list              
home-manager https://github.com/nix-community/home-manager/archive/release-24.11.tar.gz
nixos https://nixos.org/channels/nixos-24.11
╭─imbios@nixos in ~ 
╰$ nix-channel --remove nixos-24.11

uninstalling 'nixos-24.11'
╭─imbios@nixos in ~ 
╰$ nix-channel --list              
home-manager https://github.com/nix-community/home-manager/archive/release-24.11.tar.gz
nixos https://nixos.org/channels/nixos-24.11

I’m sorry, but I’m still in the learning stage.

7

You want to use the name provided on the left by nix-channel --list—in this case, nix-channel --remove nixos.

8

Thanks a lot, everything is fine now.