Fails to build on non NixOS non flake

[YarochkinAnton]

Hi!

Provided configuration for home-manager stopped working for me recently.

nixpkgs.overlays = [
    (import (builtins.fetchTarball {
        url = https://github.com/nix-community/neovim-nightly-overlay/archive/master.tar.gz;
    }))
];

On home-manager switch this config gives me the following error:

       error: attempt to call something which is not a function but a set: { default = «thunk»; }
       at /nix/store/099v28jb1qxpw8qnvzsf4chirzfq9avb-source/default.nix:2:1:
            1| final: prev:
            2| (import ./flake-compat.nix).overlays final prev
             | ^
            3|

Strangely it also spits out this error referencing k9s module, but it disappears after commenting out overlay config

error:
       … while evaluating the attribute 'activationPackage'
         at /home/poplav/.nix-defexpr/channels/home-manager/modules/default.nix:1:1164:
       … while evaluating a branch condition
         at /nix/store/qn57fhi2zd75x7xpzsah7asxnlqa4ds5-nixpkgs-24.05/nixpkgs/lib/lists.nix:125:9:
          124|       fold' = n:
          125|         if n == len
             |         ^
          126|         then nul

       … while evaluating the module argument `pkgs' in "/home/poplav/.nix-defexpr/channels/home-manager/modules/programs/k9s.nix":

Is it because of the recent change? Can you help fixing this?

[willruggiano]

Fixed by #532