Home manager waybar doubling some config values

UltraGhostie · March 10, 2025, 9:15am

Hello, I am using home-manager and nixpkgs in the unstable branch and with the latest releases (literally just ran nix flake update). I have waybar installed using home-manager, currently the generated waybar config contains doubled values for certain keys for example:

"modules-left": [
 135   │       "hyprland/workspaces",
 136   │       "hyprland/workspaces"
 137   │     ],

when my home manager config is:

 95   |     "modules-left" = {
 96   │       "hyprland/workspaces"
 67   │     };

which baffles me since i cannot seem to find any other mentions of a similar issue so i will put this up here while i keep looking for answers and if anyone wants to help please do and if you need more information i will happily provide

waffle8946 · March 10, 2025, 11:55am

That should be [] not {}. And if that’s already set in some other module then you’re doubling it by setting it again, since list definitions are merged by concatenation.

eblechschmidt · March 10, 2025, 6:02pm

You could use the nixos-option binary to check in which files "modules-left" is set.

UltraGhostie · March 10, 2025, 6:28pm

You are correct, this was a copy-error since I wrote it over manually it is [] in the config already, my bad

The error remains

waffle8946 · March 10, 2025, 6:43pm

What error? You mentioned a doubling, did you use nixos-option as mentioned?

UltraGhostie · March 10, 2025, 6:47pm

Probably should have phrased it better, the duplication bug was what I meant. I am currently attempting to explore around with nixos-option but it seems kinda wonky with home-manager, doesn’t seem to want to evaluate everything properly but throws errors like

The option `home-manager.users.myUser.accounts.calendar.basePath' was accessed but has no value defined. Try setting the option.

even though I have never touched accounts

waffle8946 · March 10, 2025, 6:49pm

Oh, whoops, I didn’t read carefully that it’s about HM. Are you using HM as a NixOS module or standalone HM?

In the latter case, use nix eval FLAKE#homeConfigurations.USERNAME.options.OPTIONPATH.definitionsWithLocation, replacing FLAKE, USERNAME and OPTIONPATH accordingly. If the former then nixos-option should work with just home-manager.users.USERNAME.OPTIONPATH

UltraGhostie · March 10, 2025, 7:25pm

Ok so this is just getting weirder:
According to nixos-option the value of
home-manager.users.myUser.programs.waybar.settings is [ ] which it really shouldnt be? (tried using the example values as well but it got the same issue as my own value with duplication)
I am unable to access anything below settings

From what I can see in the definition here:

# The clean list of configurations
 276   │     finalConfiguration = map makeConfiguration settings;
 277   │ 
 278   │     configSource = jsonFormat.generate "waybar-config.json" finalConfiguration;

From what I can gather, the bug should be in jsonFormat.generate but this seems to be some kind of custom function since I cannot really find it on google or noogle and I am too tired to dig through home-managers github right now so will probably continue tomorow.

Thank you both for the help!

eblechschmidt · March 10, 2025, 7:56pm

First of all that function is defined at the top as jsonFormat = pkgs.formats.json { }; here:

github.com

nix-community/home-manager/blob/2f23fa308a7c067e52dfcc30a0758f47043ec176/modules/programs/waybar.nix#L11


      
          { config, lib, pkgs, ... }:
          
          let
            inherit (lib)
              all filterAttrs hasAttr isStorePath literalExpression optionalAttrs types;
            inherit (lib.options) mkEnableOption mkOption;
            inherit (lib.modules) mkIf mkMerge;
          
            cfg = config.programs.waybar;
          
            jsonFormat = pkgs.formats.json { };
          
            mkMargin = name:
              mkOption {
                type = types.nullOr types.int;
                default = null;
                example = 10;
                description = "Margin value without unit.";
              };
          
            waybarBarConfig = with types;

Which again refers to nixpkgs here:

github.com

NixOS/nixpkgs/blob/71232d9b9ac2a0c999ce7a255a2d59bb8959a834/pkgs/pkgs-lib/formats.nix#L52


      
          libconfig = (import ./formats/libconfig/default.nix { inherit lib pkgs; }).format;
          
          hocon = (import ./formats/hocon/default.nix { inherit lib pkgs; }).format;
          
          php = (import ./formats/php/default.nix { inherit lib pkgs; }).format;
          
          inherit (lib) mkOptionType;
          inherit (lib.types) nullOr oneOf coercedTo listOf nonEmptyListOf attrsOf either;
          inherit (lib.types) bool int float str path;
          
          json = {}: {
          
            type = let
              valueType = nullOr (oneOf [
                bool
                int
                float
                str
                path
                (attrsOf valueType)
                (listOf valueType)

But I doubt that this is a bug as there haven’t been any changes to both files lately on the json code.

Do you have your config somewhere accessible?

UltraGhostie · March 11, 2025, 6:26am

Gonna fix a minimal config to GH, stay tuned

UltraGhostie · March 11, 2025, 1:51pm

Ok, after much tomfoolery and shenanigans I finally got a minimalized (not completely minimal but I do like some functionality to be able to do stuff). Its also anonymized with myUser as the user and hardware-config.nix is missing so you cannot accidentally build with it:

The hunt continues

waffle8946 · March 11, 2025, 2:23pm

In troubleshooting we say minimal config/example to mean a config that reproduces the issue - which means it should be buildable as-is.

UltraGhostie · March 11, 2025, 3:08pm

It should be, only really need to change to correct hardware-config.nix. I could set the default import to /etc/nixos/hardware-configuration if that would be more appropriate?

Edit: now set the import to /etc/nixos/hardware-configuration.nix

eblechschmidt · March 11, 2025, 7:33pm

This took me way too much time to figure out . But you load your home.nix both in your flake.nix as well as in hosts/laptop/configuration.nix.

To be honest this was quite a good learning for me again on troubleshooting.

UltraGhostie · March 11, 2025, 9:18pm

Thanks! A bit of a stupid bug lol, thought there would be a warning if something like that occurred

waffle8946 · March 11, 2025, 9:41pm

There’s no way for nix or the module system to warn for that - import is a nix builtin, and you can think of it as just placing the entire contents of the import-ed file where you import it.

I personally try to stick to a consistent way of laying out my configs, so that I don’t accidentally make those kinds of errors.