Turn off trace messages (when checkMaterialization is disabled) to not bother user

Author: yvan-sraka

lib/materialize.nix

@@ -47,18 +47,21 @@ let
           (traceIgnoringMaterialized reasonNotSafe calculateNoHash)
     else if materialized != null
       then calculateUseMaterialized
-    else if sha256 != null
-      then
-        # Let the user know how to materialize if they want to.
-        builtins.trace materializeMessage calculateUseHash
-    else # materialized == null && sha256 == null
-        # Let the user know how to calculate a sha256 or materialize if they want to.
-        builtins.trace sha256message (builtins.trace materializeMessage calculateNoHash);
+    # Turn off trace messages when checkMaterialization is disabled to not bother user.
+    else if checkMaterialization
+      then if sha256 != null
+        then
+          # Let the user know how to materialize if they want to.
+          builtins.trace materializeMessage calculateUseHash
+      else # materialized == null && sha256 == null
+          # Let the user know how to calculate a sha256 or materialize if they want to.
+          builtins.trace sha256message (builtins.trace materializeMessage calculateNoHash)
+    else x: x;
 
   # Build fully and check the hash and materialized versions
   checked =
     # Let the user know what we are checking.  This is useful for debugging issues
-    # where materialization fails to prevent infinite recurstion when:
+    # where materialization fails to prevent infinite recursion when:
     #   checkMaterialization = true;
     (if materialized != null
       then __trace "Checking materialization in ${toString materialized}"