Allow overriding neovim version, add new claude code, add opencode.

Signed-off-by: Mariano Uvalle <u.g.a.mariano@gmail.com>

flake.lock

@@ -302,11 +302,11 @@
     },
     "nixpkgs-unstable_2": {
       "locked": {
-        "lastModified": 1751984180,
-        "narHash": "sha256-LwWRsENAZJKUdD3SpLluwDmdXY9F45ZEgCb0X+xgOL0=",
+        "lastModified": 1753429684,
+        "narHash": "sha256-9h7+4/53cSfQ/uA3pSvCaBepmZaz/dLlLVJnbQ+SJjk=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "9807714d6944a957c2e036f84b0ff8caf9930bc0",
+        "rev": "7fd36ee82c0275fb545775cc5e4d30542899511d",
         "type": "github"
       },
       "original": {

flake.nix

@@ -125,7 +125,14 @@
 
     # Build darwin flake using:
     # $ darwin-rebuild build --flake .#macbook
-    darwinConfigurations = {
+    darwinConfigurations = let
+      pkgs-unstable_aarch64-darwin = import nixpkgs-unstable {
+        system = "aarch64-darwin";
+        config = {
+          allowUnfree = true;
+        };
+      };
+    in {
       "macbook" = nix-darwin.lib.darwinSystem {
         system = "aarch64-darwin";
         specialArgs = {
@@ -135,6 +142,9 @@
           ./hosts/macbook/configuration.nix
           home-manager.darwinModules.home-manager
           {
+            home-manager.extraSpecialArgs = {
+              pkgs-unstable = pkgs-unstable_aarch64-darwin;
+            };
             home-manager.useGlobalPkgs = true;
             home-manager.useUserPackages = true;
             home-manager.users.uagm.imports = [ ./hosts/macbook/home.nix ];

home-modules/nvim.nix

@@ -1,7 +1,21 @@
-{ pkgs, ... } : {
+{ config, lib, pkgs, ... }:
 
-  home.packages = with pkgs; [
-      neovim
+with lib;
+
+{
+  options.nvim = {
+    enable = mkEnableOption "Enable custom neovim configuration";
+
+    package = mkOption {
+      type = types.package;
+      default = pkgs.neovim;
+      description = "The neovim package to use";
+    };
+  };
+
+  config = mkIf config.nvim.enable {
+    home.packages = [
+      config.nvim.package
     ];
 
     programs.zsh = {
@@ -14,4 +28,5 @@
       recursive = true;
       source = ./explicit-configs/nvim;
     };
+  };
 }

hosts/macbook/home.nix

@@ -1,4 +1,9 @@
-{ config, pkgs, ... } : {
+{
+  config,
+  pkgs,
+  pkgs-unstable,
+  ...
+} : {
   
   imports = [
     ../../home-modules/tmux-darwin.nix
@@ -11,6 +16,11 @@
     ../../home-modules/ghostty-mac-config.nix
   ];
 
+  nvim = {
+    enable = true;
+    package = pkgs-unstable.neovim;
+  };
+
   home = {
     username = "uagm";
     homeDirectory = "/Users/uagm";
@@ -23,6 +33,17 @@
       lua-language-server
       starship
       audacity
+      pkgs-unstable.claude-code
+      (pkgs-unstable.litellm.overrideAttrs (oldAttrs: rec {
+        version = "1.74.9";
+        src = pkgs.fetchFromGitHub {
+          owner = "BerriAI";
+          repo = "litellm";
+          tag = "v${version}-stable";
+          hash = "sha256-SGZwt2jzAQbOMlvudqPWat281su6OwT7JG2CNSMjL3A=";
+        };
+      }))
+      pkgs-unstable.opencode
     ];
 
     stateVersion = "24.11";