add basic user management

users/alice/default.nix

@@ -0,0 +1,27 @@
+{
+  pkgs,
+  lib,
+  config,
+}: let
+  pubKeys = import ./keys/default.nix;
+in {
+  isNormalUser = true;
+  description = "AmethystAndroid";
+  uid = 1000;
+  extraGroups = [
+    "wheel"
+    "media"
+    (lib.mkIf config.networking.networkmanager.enable "networkmanager")
+    (lib.mkIf config.programs.adb.enable "adbusers")
+    (lib.mkIf config.programs.wireshark.enable "wireshark")
+    (lib.mkIf config.programs.virtualisation.docker.enable "docker")
+    "libvirtd"
+    "dialout"
+    "plugdev"
+    "uaccess"
+  ];
+  shell = pkgs.fish;
+  openssh.authorizedKeys.keys = [
+    (lib.mkIf (pubKeys ? ${config.networking.hostName}) pubKeys.${config.networking.hostName})
+  ];
+}

users/alice/keys/default.nix

@@ -0,0 +1,3 @@
+{
+  palatine-hill = "ed25516-AAAAAAA";
+}