feat: Add ability to use unstable packages

flake.lock

@@ -103,11 +103,28 @@
         "type": "github"
       }
     },
+    "nixpkgs-unstable": {
+      "locked": {
+        "lastModified": 1733656523,
+        "narHash": "sha256-w0FXPfpGhOihoJDiwMsyN1EzpsXi2F8VQ+NVZQSMtys=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "93dc9803a1ee435e590b02cde9589038d5cc3a4e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "agenix": "agenix",
         "home-manager": "home-manager_2",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "nixpkgs-unstable": "nixpkgs-unstable"
       }
     },
     "systems": {

flake.nix

@@ -4,6 +4,7 @@
   inputs = {
     # Specify the source of Home Manager and Nixpkgs.
     nixpkgs.url = "github:nixos/nixpkgs/nixos-24.11";
+    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixpkgs-unstable";
     home-manager = {
       url = "github:nix-community/home-manager/release-24.11";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -14,7 +15,7 @@
     };
   };
 
-  outputs = { nixpkgs, home-manager, agenix, ... }:
+  outputs = { nixpkgs, nixpkgs-unstable, home-manager, agenix, ... }:
     let
       system = "aarch64-darwin";
       pkgs = nixpkgs.legacyPackages.${system};
@@ -29,6 +30,9 @@
 
           # Optionally use extraSpecialArgs
           # to pass through arguments to home.nix
+          extraSpecialArgs = {
+            pkgs-unstable = nixpkgs-unstable.legacyPackages.${system};
+          };
         };
     };
 }

home.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ config, pkgs, pkgs-unstable, ... }:
 
 {
   # Home Manager needs a bit of information about you and the paths it should
@@ -39,6 +39,7 @@
     lsd
     lynx
     most
+    musescore
     neovide
     nil
     nixd