Breaking change on nix

[noahfraiture]

Hello,
A new breaking change block me from building my config on nixos. I get this error :

error:
       … while calling the 'head' builtin
         at /nix/store/m68ikm8045fj7ys7qvgr608z9l70hh1k-source/lib/attrsets.nix:1575:11:
         1574|         || pred here (elemAt values 1) (head values) then
         1575|           head values
             |           ^
         1576|         else

       … while evaluating the attribute 'value'
         at /nix/store/m68ikm8045fj7ys7qvgr608z9l70hh1k-source/lib/modules.nix:816:9:
          815|     in warnDeprecation opt //
          816|       { value = addErrorContext "while evaluating the option `${showOption loc}':" value;
             |         ^
          817|         inherit (res.defsFinal') highestPrio;

       … while evaluating the option `system.build.toplevel':

       … while evaluating definitions from `/nix/store/m68ikm8045fj7ys7qvgr608z9l70hh1k-source/nixos/modules/system/activation/top-level.nix':

       … while evaluating the option `xdg.portal.extraPortals':

       … while evaluating definitions from `/nix/store/m68ikm8045fj7ys7qvgr608z9l70hh1k-source/nixos/modules/programs/wayland/hyprland.nix':

       … while evaluating the option `programs.hyprland.portalPackage':

       … while evaluating definitions from `/nix/store/5hrs5cylad1xv137f6qjkqq9dq0zgqap-source/hosts/inspiron/hyprland.nix':

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)
   

which is not very explicit but I tried to remove the section mentionned to get this config :

{
  pkgs,
  inputs,
  ...
}:
{
  config = {
    nix.settings = {
      substituters = [ "https://hyprland.cachix.org" ];
      trusted-public-keys = [
        "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
      ];
    };

    programs.hyprland = {
      enable = true;
      package = inputs.hyprland.packages.${pkgs.system}.hyprland;
      xwayland.enable = true;
      # portalPackage =
      #   inputs.hyprland.packages.${pkgs.stdenv.hostPlatform.system}.xdg-desktop-portal-hyprland;
    };

    environment.sessionVariables = {
      NIXOS_OZONE_WL = "1";
      LIBVA_DRIVER_NAME = "nvidia";
      __GLX_VENDOR_LIBRARY_NAME = "nvidia";
    };

    # xdg.portal = {
    #   enable = true;
    #   wlr.enable = true;
    #   extraPortals = with pkgs; [
    #     xdg-desktop-portal-gtk
    #   ];
    # };

    services = {
      xserver = {
        enable = true;
        # displayManager.sessionCommands = ''
        #   ${pkgs.xorg.xrdb}/bin/xrdb -merge <<EOF
        #     Xft.dpi: 110
        #   EOF
        # '';
      };
    };
  };
}

but again it doesn't work and I get this issue :

warning: Git tree '/etc/nixos' is dirty
building the system configuration...
warning: Git tree '/etc/nixos' is dirty
error:
       … while calling the 'head' builtin
         at /nix/store/m68ikm8045fj7ys7qvgr608z9l70hh1k-source/lib/attrsets.nix:1575:11:
         1574|         || pred here (elemAt values 1) (head values) then
         1575|           head values
             |           ^
         1576|         else

       … while evaluating the attribute 'value'
         at /nix/store/m68ikm8045fj7ys7qvgr608z9l70hh1k-source/lib/modules.nix:816:9:
          815|     in warnDeprecation opt //
          816|       { value = addErrorContext "while evaluating the option `${showOption loc}':" value;
             |         ^
          817|         inherit (res.defsFinal') highestPrio;

       … while evaluating the option `system.build.toplevel':

       … while evaluating definitions from `/nix/store/m68ikm8045fj7ys7qvgr608z9l70hh1k-source/nixos/modules/system/activation/top-level.nix':

       … while evaluating the option `warnings':

       … while evaluating definitions from `/nix/store/m68ikm8045fj7ys7qvgr608z9l70hh1k-source/nixos/modules/system/boot/systemd.nix':

       … while evaluating the option `systemd.services.home-manager-noah.serviceConfig':

       … while evaluating definitions from `/nix/store/m68ikm8045fj7ys7qvgr608z9l70hh1k-source/flake.nix':

       … while evaluating the option `home-manager.users.noah.home.activation.checkFilesChanged.data':

       … while evaluating definitions from `/nix/store/pij5lycb56qqa5r0ks43az07f2xfqr2n-source/modules/files.nix':

       … while evaluating the option `home-manager.users.noah.home.file."/home/noah/.config/hypr/hyprland.conf".onChange':

       … while evaluating definitions from `/nix/store/pij5lycb56qqa5r0ks43az07f2xfqr2n-source/modules/misc/xdg.nix':

       … while evaluating the option `home-manager.users.noah.xdg.configFile."hypr/hyprland.conf".onChange':

       … while evaluating definitions from `/nix/store/pij5lycb56qqa5r0ks43az07f2xfqr2n-source/modules/services/window-managers/hyprland.nix':

       … while evaluating the option `home-manager.users.noah.wayland.windowManager.hyprland.package':

       … while evaluating definitions from `/nix/store/w7lkb8sxbrxahnbw1xphl6cdma50zh7v-source/modules/home-manager/hyprland.nix':

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: path '/nix/store/fgxkr9w7f607kx637h5p5n1i0f51fj6g-source/flake.nix' does not exist
       

Does someone know what is the issue and what changed in hyprland ?

[fufexan]

Portals should be enabled and shouldn't cause the issue you're having.

What are your hyprland and nixpkgs inputs? Do you override anything? (.follows) Are your inputs up to date?

May also be useful to check which flake the last line belongs to. You can simply ls /nix/store/fgxkr9w7f607kx637h5p5n1i0f51fj6g-source/.

[noahfraiture]

My inputs are the following :

    hyprland.url = "github:hyprwm/Hyprland";

    hyprspace = {
      url = "github:KZDKM/Hyprspace";
      inputs.hyprland.follows = "hyprland";
    };

Nothing has changed since my last build and I tried to checkout an old commit and it doesn't work either :(

The last flake is my global config, it gives the files inside my /etc/nixos

[fufexan]

A --show-trace might be useful in that case.

[noahfraiture]

Ok, I pasted it here because it's too long. To be honest I don't understand a lot from it https://pastebin.com/9TviZvLw

[noahfraiture]

The only solution I found to remove this error is to comment out xdg-portal programs.hyprland.package and programs.hyprland.portalPackage but then I get another error

error:
       … while setting up the build environment

       error: getting attributes of path '/nix/store/26vlqxwzk1949vg41f7g56hqxa6ggq8r-make-shell-wrapper-hook': No such file or directory
``` when I deactivate all my home packages (containing hypridle and hyprlock) or 

error:
… while calling the 'head' builtin
at /nix/store/m68ikm8045fj7ys7qvgr608z9l70hh1k-source/lib/attrsets.nix:1575:11:
1574| || pred here (elemAt values 1) (head values) then
1575| head values
| ^
1576| else

   … while evaluating the attribute 'value'
     at /nix/store/m68ikm8045fj7ys7qvgr608z9l70hh1k-source/lib/modules.nix:816:9:
      815|     in warnDeprecation opt //
      816|       { value = addErrorContext "while evaluating the option `${showOption loc}':" value;
         |         ^
      817|         inherit (res.defsFinal') highestPrio;

   … while evaluating the option `system.build.toplevel':

   … while evaluating definitions from `/nix/store/m68ikm8045fj7ys7qvgr608z9l70hh1k-source/nixos/modules/system/activation/top-level.nix':

   … while evaluating the option `warnings':

   … while evaluating definitions from `/nix/store/m68ikm8045fj7ys7qvgr608z9l70hh1k-source/nixos/modules/system/boot/systemd.nix':

   … while evaluating the option `systemd.services.home-manager-noah.serviceConfig':

   … while evaluating definitions from `/nix/store/m68ikm8045fj7ys7qvgr608z9l70hh1k-source/flake.nix':

   … while evaluating the option `home-manager.users.noah.home.activation.checkFilesChanged.data':

   … while evaluating definitions from `/nix/store/pij5lycb56qqa5r0ks43az07f2xfqr2n-source/modules/files.nix':

   … while evaluating the option `home-manager.users.noah.home.file."/home/noah/.config/hypr/hyprland.conf".onChange':

   … while evaluating definitions from `/nix/store/pij5lycb56qqa5r0ks43az07f2xfqr2n-source/modules/misc/xdg.nix':

   … while evaluating the option `home-manager.users.noah.xdg.configFile."hypr/hyprland.conf".onChange':

   … while evaluating definitions from `/nix/store/pij5lycb56qqa5r0ks43az07f2xfqr2n-source/modules/services/window-managers/hyprland.nix':

   … while evaluating the option `home-manager.users.noah.wayland.windowManager.hyprland.package':

   … while evaluating definitions from `/nix/store/8gfb24dr5rris70dghajwmrmsp92bj8s-source/modules/home-manager/hyprland.nix':

I'm a little bit lost since I had none of these issue before

[fufexan]

Do you have your config posted anywhere? Would be easier for me to check.

[noahfraiture]

Do you have your config posted anywhere? Would be easier for me to check.

Yeah I turned it public https://github.com/noahfraiture/nix

[noahfraiture]

@fufexan Hey, did you see anything weird ?

[fufexan]

Hyprland is not the issue at all. It's a flake input that's not actually a flake, but you're trying to use it as such, and that's why Nix fails evaluation.

Applying this diff made both hosts build fine.

diff --git a/flake.nix b/flake.nix
index 54da3e3..01487be 100644
--- a/flake.nix
+++ b/flake.nix
@@ -26,7 +26,7 @@
 
     nix-flatpak.url = "github:gmodena/nix-flatpak/?ref=v0.4.1";
 
-    posting.url = "github:darrenburns/posting";
+    # posting.url = "github:darrenburns/posting";
 
     spicetify-nix = {
       url = "github:Gerg-L/spicetify-nix";
diff --git a/modules/home-manager/packages.nix b/modules/home-manager/packages.nix
index 630c402..0feacf0 100644
--- a/modules/home-manager/packages.nix
+++ b/modules/home-manager/packages.nix
@@ -40,12 +40,12 @@ let
     rainfrog # db management tool
     ripgrep # Search for substring
     yazi # file explorer
-    (python312.withPackages (
-      ps: with ps; [
-        posting
-      ]
-    ))
-    inputs.posting.packages.${pkgs.system}.default
+    # (python312.withPackages (
+    #   ps: with ps; [
+    #     posting
+    #   ]
+    # ))
+    # inputs.posting.packages.${pkgs.system}.default
 
   ];
 

[noahfraiture]

Sadly I still have the problem without that and I had it before trying to add posting. But if you say that it works on your side that's great ! I will make a full clear and rebuild from zero on a clean OS. Thank you for your help really !

[fufexan]

Ah, unfortunate situation. Best of luck!