refactor(dotfiles): separate registry validation

src/dotfiles/registry.nix

@@ -19,14 +19,12 @@ let
       ];
     }).config;
 
-  data = validate (
+  validate = import ./registry/validation.nix { inherit definitions lib; };
-    lib.mapAttrs (
+
+  data = lib.mapAttrs (
     registryName: _registry:
     lib.mapAttrs (hostName: host: host.config.registry.${registryName}.${hostName} or { }) hosts
-    ) definitions
+  ) definitions;
-  );
-
-  validate = import ./registry/validation.nix { inherit definitions lib; };
 in
 {
   types = lib.mapAttrs (_name: definition: definition.type) definitions;
@@ -45,7 +43,10 @@ in
     ) definitions;
   };
 
-  collected = data // {
+  collected =
+    assert validate data;
+    data
+    // {
       join =
         host: entry:
         lib.filterAttrs (_name: value: value != null) (

src/dotfiles/registry/validation.nix

@@ -35,7 +35,6 @@ let
   assertions = validationAssertions data;
   failures = lib.filter (assertion: !assertion.assertion) assertions;
 in
-assert lib.assertMsg (lib.all (assertion: assertion.assertion) assertions) (
+lib.assertMsg (lib.all (assertion: assertion.assertion) assertions) (
   lib.concatMapStringsSep "\n" (assertion: assertion.message) failures
-);
+)
-data