Initial commit

flake/den/modules/aspects/provides/primary-user.nix

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+{ lib, ... }:
+let
+  description = ''
+    Sets user as *primary*.
+
+    On NixOS adds wheel and networkmanager groups.
+    On Darwin sets user as system.primaryUser
+    On WSL sets wsl.defaultUser if host has an `wsl` attribute.
+
+    ## Usage
+
+       den.aspects.my-user.includes = [ den._.primary-user ];
+
+  '';
+
+  userToHostContext =
+    { user, host, ... }:
+    let
+      on-wsl.nixos.wsl.defaultUser = user.userName;
+    in
+    {
+      inherit description;
+      includes = lib.optionals (host ? wsl) [ on-wsl ];
+      darwin.system.primaryUser = user.userName;
+      nixos.users.users.${user.userName} = {
+        isNormalUser = true;
+        extraGroups = [
+          "wheel"
+          "networkmanager"
+        ];
+      };
+    };
+
+in
+{
+  den.provides.primary-user = userToHostContext;
+}