allow building with nix build

flake.nix

@@ -103,22 +103,49 @@
                 agenix.packages.${system}.default
                 colmena.packages.${system}.colmena
                 colmena.packages.${system}.manual
-                (pkgs.writeShellScriptBin "build" ''
+                (writeShellScriptBin "build" ''
                   colmena --experimental-flake-eval build --keep-result "$@"
                 '')
-                (pkgs.writeShellScriptBin "apply" ''
+                (writeShellScriptBin "apply" ''
                   colmena --experimental-flake-eval apply --keep-result "$@"
                 '')
-                (pkgs.writeShellScriptBin "apply-local" ''
+                (writeShellScriptBin "apply-local" ''
                   colmena --experimental-flake-eval apply-local --sudo "$@"
                 '')
               ];
             };
           };
         flake = {
+          nixosConfigurations =
+            let
+              mkConfiguration =
+                name:
+                nixpkgs.lib.nixosSystem {
+                  inherit specialArgs;
+                  modules = [
+                    ./modules
+                    ./hosts/${name}
+                  ];
+                };
+            in
+            {
+              radish = mkConfiguration "radish";
+              freun-dev = mkConfiguration "freun-dev";
+              apu = mkConfiguration "apu";
+            };
+
           colmenaHive = colmena.lib.makeHive self.outputs.colmena;
 
-          colmena = {
+          colmena =
+            let
+              deploymentOptions = {
+                radish = {
+                  allowLocalDeployment = true;
+                  targetHost = null;
+                };
+              };
+            in
+            {
               meta = {
                 inherit specialArgs;
 
@@ -127,29 +154,11 @@
                   overlays = [ ];
                 };
               };
-
-            defaults =
-              { name, ... }:
-              {
-                imports = [
-                  ./modules
-                  ./hosts/${name}
-                ];
-              };
-
-            radish =
-              { ... }:
-              {
-                deployment = {
-                  allowLocalDeployment = true;
-                  targetHost = null;
-                };
-              };
-
-            freun-dev = { ... }: { };
-
-            apu = { ... }: { };
-          };
+            }
+            // builtins.mapAttrs (name: config: {
+              imports = config._module.args.modules;
+              deployment = if builtins.hasAttr name deploymentOptions then deploymentOptions.${name} else { };
+            }) self.nixosConfigurations;
         };
       }
     );