tested and confirms it works

.gitignore

@@ -0,0 +1 @@
+result

flake.nix

@@ -28,9 +28,9 @@
       };
   in
   {
-    darwinConfigurations."Brians-MacBook-Air" = nix-darwin.lib.darwinSystem {
+    darwinConfigurations = {
       personal = mkDarwin { profile = "personal"; user = "briannelson"; };
-      work = mkDarwin { profile = "work"; user = "briannelson"; };
+      work = mkDarwin { profile = "work"; user = "YOUR-WORK-USERNAME"; };
     };
   };
 }

modules/apps.nix

@@ -1,4 +1,4 @@
-{ ... }:
+{ pkgs, ... }:
 
 {
   # This file installs these apps on all configurations
@@ -39,4 +39,4 @@
     "vscodium"
     "firefox"
   ];
-}
+}

modules/archive-installs.nix

@@ -1,4 +1,4 @@
-{ pkgs, lib, ... }:
+{ pkgs, lib, config, ... }:
 
 let
   cfg = config.archiveApps;
@@ -30,12 +30,12 @@ let
     '';
 in
 {
-  optiosn.archiveApps = lib.mkOption {
-    type = lib.types.typesOf (lib.types.attrsOf lib.types.str);
+  options.archiveApps = lib.mkOption {
+    type = lib.types.listOf (lib.types.attrsOf lib.types.str);
     default = [ ];
     description = "Apps distributed as .zip archives to install into /Applications";
-  }
+  };
 
-  system.activationScripts.postActivation.text =
+  config.system.activationScripts.postActivation.text =
     lib.concatMapStringsSep "\n" appScript cfg;
 }

modules/pkg-installs.nix

@@ -22,10 +22,10 @@ in
 {
   options.pkgInstalls = lib.mkOption {
     type = lib.types.listOf (lib.types.attrsOf lib.types.str);
-    default = [ ];'
+    default = [ ];
     description = "PKG files to install on activation";
   };
 
-  system.activationScripts.postActivation.text =
+  config.system.activationScripts.postActivation.text =
     lib.concatMapStringsSep "\n" installScript cfg;
 }

profiles/personal/apps.nix

@@ -31,5 +31,5 @@
     "libreoffice"
     "protonvpn"
     "rustdesk"
-  ]
-}
+  ];
+}

profiles/personal/default.nix

@@ -4,6 +4,5 @@
   imports = [
     ./cli-tools.nix
     ./apps.nix
-    ./archive-installs.nix
-  ]
-}
+  ];
+}

profiles/work/default.nix

@@ -4,5 +4,5 @@
   imports = [
     ./apps.nix
     ./cli-tools.nix
-  ]
-}
+  ];
+}