split home-manager into their own submodules

modules/dev/nix/home.nix

@@ -0,0 +1,40 @@
+{
+  config,
+  inputs,
+  lib,
+  osConfig ? null,
+  pkgs,
+  ...
+}:
+let
+  shellType = inputs.self.lib.hmShellType config osConfig;
+  hm = inputs.self.lib.hmModule {
+    inherit
+      config
+      inputs
+      osConfig
+      ;
+    optionPath = [
+      "dev"
+      "nix"
+    ];
+  };
+  cfg = config.my.dev.nix;
+  nix = import ./common.nix {
+    inherit pkgs;
+    hostName = if osConfig == null then null else osConfig.networking.hostName;
+  };
+in
+{
+  options.my.dev.nix.enable = lib.mkEnableOption "Install Nix tooling globally";
+  config = lib.mkMerge [
+    {
+      my.dev.nix.enable = lib.mkDefault hm.enabledByDefault;
+    }
+    (lib.mkIf cfg.enable {
+      home.packages = nix.packages;
+      programs.${shellType}.shellAliases =
+        inputs.self.lib.mergeAliases inputs.self.lib.commonAliases nix.shellAliases;
+    })
+  ];
+}