refactor: merge 'host.nix' into 'meta.nix'

hosts/eetion-02/default.nix

@@ -3,13 +3,17 @@
 # Raspberry Pi 3
 # See <https://nixos.wiki/wiki/NixOS_on_ARM/Raspberry_Pi_3>
 
+let
+  meta = import ./meta.nix;
+in
 {
   imports = [
     ./hard.nix
-    ./host.nix
     ../../modules
   ];
 
+  inherit (meta) host;
+
   ssh.enable = true;
 
   boot = {

hosts/eetion-02/host.nix

@@ -1,5 +0,0 @@
-{
-  host = {
-    username = "h";
-  };
-}

hosts/eetion-02/meta.nix

@@ -1,9 +1,8 @@
 {
   system = "aarch64-linux";
-  deployment = {
-    tags = [ "arm" ];
-    targetHost = "eetion-02";
-    targetUser = "h";
-  };
   role = "embedded";
+  tags = [ "arm" ];
+  host = {
+    username = "h";
+  };
 }