attempt 1

hosts/default.nix

@@ -5,6 +5,9 @@
     inherit (inputs) self;
     inherit (self) lib;
 
+    inherit (lib.attrsets) listToAttrs;
+    inherit (lib.path) append;
+
     createHost' = extraModules: hostDir: lib.nixosSystem {
         system = null;
         specialArgs = {
@@ -17,16 +20,26 @@
         ] ++ extraModules;
     };
 
+    createHost = createHost' [];
     createDesktop = createHost' [ ./common/desktop ];
     createServer = createHost' [];
+
+    createHosts = hosts: listToAttrs (map (host: let
+        createFn = {
+            desktop = createDesktop;
+            server = createServer;
+            generic = createHost;
+        }."${host.type}";
+        path' = append host.dir "system.nix";
+        cfg = import path';
     in {
-    niks = createDesktop ./niks;
-
-    del = createDesktop ./del;
-
-    hape = createDesktop ./hape;
-
-    chmura = createServer ./chmura;
-
-    ${inputs.work-secrets.hostname} = createDesktop ./work;
-}
+        name = cfg.poz.other.system.hostname;
+        value = createFn host.dir;
+    }) hosts);
+in createHosts [
+    { dir = ./niks;     type = "desktop";   }
+    { dir = ./del;      type = "desktop";   }
+    { dir = ./hape;     type = "desktop";   }
+    { dir = ./chmura;   type = "server";    }
+    { dir = ./work;     type = "desktop";   }
+]