Install guacamole from unstable

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1

Hello everbody! Quite new to nixos, so I hope I am not asking something obvious. I’d like to install Apache guacamole which can only be found in unstable. I followed this https://nlewo.github.io/nixos-manual-sphinx/development/replace-modules.xml.HTML part of the manual ending up with an import statement as follows

imports =                                                                                              
     [ # Include the results of the hardware scan.
        ./hardware-configuration.nix
 
      # Guacamole from unstable
      # sudo nix-channel --add http://nixos.org/channels/nixos-unstable nixos-unstable    
       <nixos-unstable/nixos/modules/services/web-apps/guacamole-client.nix>
      <nixos-unstable/nixos/modules/services/web-apps/guacamole-server.nix>
    ];

But when I add
services.guacamole-server.enable = true;

And try to rebuilt, I get an error: guacamole-server cannot be found in pkgs

Any hints what I am doing wrong?

1 Like
2

You will need to set services.guacamole-server.package to the package in unstable

Something like this might work for that:

let
  unstablePkgs = import "<nixos-unstable>" { };
in {
  services.guacamole-server.package = unstablePkgs.guacamole-server;
}

You might need to do something similar for guacamole-client if you use that.

1 Like
3

Thanks will try that later.

1 Like
4

This might be a noob mistake but I get an error
error: syntax error, uexpected LET
If I put it closed to the service declaration

If I put it directly after {config…} I get
error: attempt to call something which is not a function but a set
(Google told me to try that)

Thanks for trying to help!

5

So if anyone interested here is a working config:

{
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix

     # Guacamole from unstable
     # sudo nix-channel --add http://nixos.org/channels/nixos-unstable nixos-unstable
      <nixos-unstable/nixos/modules/services/web-apps/guacamole-client.nix>  
      <nixos-unstable/nixos/modules/services/web-apps/guacamole-server.nix> 
    ];
    nixpkgs.config = {
    packageOverrides = pkgs: {
    unstable = import <nixos-unstable> {   # pass the nixpkgs config to the stable alias
      config = config.nixpkgs.config;
      };
    };
  };

    services.guacamole-server.package = pkgs.unstable.guacamole-server;
    services.guacamole-client.package = pkgs.unstable.guacamole-client;
    services.guacamole-client.enable = true;
    services.guacamole-server.enable = true;

If this way of doing things has disadvantages please let me know. I am trying to learn.