feat(nixos): use overlays to use stable channel for wezterm

configuration.nix

@@ -2,7 +2,7 @@
 # your system.  Help is available in the configuration.nix(5) man page
 # and in the NixOS manual (accessible by running ‘nixos-help’).
 
-{ config, pkgs, ... }:
+{ config, pkgs, outputs, ... }:
 
 {
   imports =
@@ -95,6 +95,7 @@
 
   # Allow unfree packages
   nixpkgs.config.allowUnfree = true;
+  nixpkgs.overlays = [ outputs.overlays.stable-packages ];
   fonts.packages = with pkgs; [
     (nerdfonts.override { fonts = [ "FiraCode"]; })
     # fira-code
@@ -116,7 +117,7 @@
     fzf
     direnv
 
-    wezterm
+    stable.wezterm
     fish
     starship
 

flake.nix

@@ -4,14 +4,19 @@
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
     nixpkgs-stable.url = "github:nixos/nixpkgs/nixos-24.05";
-    home-manager.url = "github:nix-community/home-manager";
-    home-manager.inputs.nixpkgs.follows = "nixpkgs";
+    home-manager = {
+      url = "github:nix-community/home-manager";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
-  outputs = { self, home-manager, nixpkgs, ... }@inputs: {
-    # Please replace my-nixos with your hostname
+  outputs = { self, home-manager, nixpkgs, ... }@inputs: let
+  inherit (self) outputs;
+  in {
+    overlays = import ./overlays {inherit inputs;};
     nixosConfigurations = {
       nixos = nixpkgs.lib.nixosSystem {
+        specialArgs = {inherit inputs outputs;};
         system = "x86_64-linux";
         modules = [
           ./configuration.nix

overlays/default.nix

@@ -0,0 +1,22 @@
+{inputs, ...}: {
+  # This one brings our custom packages from the 'pkgs' directory
+  additions = final: _prev: import ../pkgs final.pkgs;
+
+  # This one contains whatever you want to overlay
+  # You can change versions, add patches, set compilation flags, anything really.
+  # https://nixos.wiki/wiki/Overlays
+  modifications = final: prev: {
+    # example = prev.example.overrideAttrs (oldAttrs: rec {
+    # ...
+    # });
+  };
+
+  # When applied, the stable nixpkgs set (declared in the flake inputs) will
+  # be accessible through 'pkgs.stable'
+  stable-packages = final: _prev: {
+    stable = import inputs.nixpkgs-stable {
+      system = final.system;
+      config.allowUnfree = true;
+    };
+  };
+}