[shared] Home-manager unstable and fix nixpkgs unstable on system

flake.lock

@@ -119,6 +119,26 @@
         "type": "github"
       }
     },
+    "home-manager-unstable": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs-unstable"
+        ]
+      },
+      "locked": {
+        "lastModified": 1760662441,
+        "narHash": "sha256-mlDqR1Ntgs9uYYEAUR1IhamKBO0lxoNS4zGLzEZaY0A=",
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "rev": "722792af097dff5790f1a66d271a47759f477755",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "type": "github"
+      }
+    },
     "home-manager_2": {
       "inputs": {
         "nixpkgs": [
@@ -256,6 +276,7 @@
       "inputs": {
         "catppuccin": "catppuccin",
         "home-manager": "home-manager",
+        "home-manager-unstable": "home-manager-unstable",
         "nixpkgs": "nixpkgs_2",
         "nixpkgs-stable": "nixpkgs-stable",
         "nixpkgs-unstable": "nixpkgs-unstable",

flake.nix

@@ -19,6 +19,11 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
+    home-manager-unstable = {
+      url = "github:nix-community/home-manager";
+      inputs.nixpkgs.follows = "nixpkgs-unstable";
+    };
+
     #
     # ========= Utilities =========
     #
@@ -45,6 +50,7 @@
       nixpkgs,
       nixpkgs-unstable,
       home-manager,
+      home-manager-unstable,
       ...
     }@inputs:
     let
@@ -60,13 +66,6 @@
         "aarch64-linux"
       ];
 
-      # ========== Extend lib with lib.custom ==========
-      # NOTE: This approach allows lib.custom to propagate into hm
-      # see: https://github.com/nix-community/home-manager/pull/3454
-      customLib = (_self: _super: { custom = import ./lib { inherit (nixpkgs) lib; }; });
-      lib = nixpkgs.lib.extend customLib;
-      libHm = home-manager.lib.extend customLib;
-
       systems = import ./systems.nix {
         inherit common;
       };
@@ -92,6 +91,13 @@
 
         let
           pkgs = if nixos.channel == "stable" then nixpkgs else nixpkgs-unstable;
+          hm = if nixos.channel == "stable" then home-manager else home-manager-unstable;
+          # ========== Extend lib with lib.custom ==========
+          # NOTE: This approach allows lib.custom to propagate into hm
+          # see: https://github.com/nix-community/home-manager/pull/3454
+          customLib = (_self: _super: { custom = import ./lib { inherit (pkgs) lib; }; });
+          lib = pkgs.lib.extend customLib;
+          libHm = hm.lib.extend customLib;
         in
         pkgs.lib.nixosSystem {
           inherit system;
@@ -110,7 +116,7 @@
           };
           modules = [
             ./hosts/${hostName}
-            home-manager.nixosModules.home-manager
+            hm.nixosModules.home-manager
             {
               home-manager = {
                 # Backups conflicting files in case of error