refactor(common): simplify home-manager config

hosts/andromache/default.nix

@@ -26,7 +26,6 @@ in
   inherit (meta) host;
 
   hardware.facter.reportPath = ./facter.json;
-  home-manager.users.${config.host.username} = import ../../home/hosts/${config.host.name};
 
   "ai-tools".enable = true;
   anki.enable = true;

hosts/astyanax/default.nix

@@ -25,7 +25,6 @@ in
   inherit (meta) host;
 
   hardware.facter.reportPath = ./facter.json;
-  home-manager.users.${config.host.username} = import ../../home/hosts/${config.host.name};
 
   "ai-tools".enable = true;
   anki.enable = true;

hosts/vm/default.nix

@@ -1,6 +1,5 @@
 {
   inputs,
-  config,
   ...
 }:
 let
@@ -17,7 +16,6 @@ in
   inherit (meta) host;
 
   hardware.facter.reportPath = ./facter.json;
-  home-manager.users.${config.host.username} = import ../../home/hosts/vm;
 
   "ai-tools".enable = true;
   anki.enable = true;

modules/common/default.nix

@@ -9,6 +9,7 @@
 
 let
   inherit (inputs.nixpkgs) lib;
+  homeDir = ../../home/hosts + "/${config.host.name}";
 in
 {
   imports = [
@@ -83,6 +84,9 @@ in
           host.username = lib.mkDefault config.host.username;
         }
       ];
+      users = lib.optionalAttrs (builtins.pathExists homeDir) {
+        ${config.host.username} = import homeDir;
+      };
     };
   };
 }