diff --git a/repos/spack_stack/spack_repo/spack_stack/packages/ioda/ioda_yaml_root.patch b/repos/spack_stack/spack_repo/spack_stack/packages/ioda/ioda_yaml_root.patch
new file mode 100644
index 000000000..ae3ed8a1c
--- /dev/null
+++ b/repos/spack_stack/spack_repo/spack_stack/packages/ioda/ioda_yaml_root.patch
@@ -0,0 +1,13 @@
+diff --git a/cmake/ioda-import.cmake.in b/cmake/ioda-import.cmake.in
+index 907fce15..0d7ae528 100644
+--- a/cmake/ioda-import.cmake.in
++++ b/cmake/ioda-import.cmake.in
+@@ -96,7 +96,7 @@ else()
+ 		# in the ioda-post-import.cmake file, even if it is never again used. Some
+ 		# tools (like Spack) will complain about this path and may indicate that ioda
+ 		# is a non-relocatable package, even though it is completely relocatable.
+-		set( IODA_YAML_ROOT "@IODA_YAML_ROOT@" )
++		set( IODA_YAML_ROOT "${CMAKE_CURRENT_LIST_DIR}/share/test/testinput/" )
+ 	endif()
+ endif()
+ 
diff --git a/repos/spack_stack/spack_repo/spack_stack/packages/ioda/package.py b/repos/spack_stack/spack_repo/spack_stack/packages/ioda/package.py
index b22856ae2..1c61359f1 100644
--- a/repos/spack_stack/spack_repo/spack_stack/packages/ioda/package.py
+++ b/repos/spack_stack/spack_repo/spack_stack/packages/ioda/package.py
@@ -20,6 +20,7 @@ class Ioda(CMakePackage):
     version("2.9.0.20250826", commit="6e76616001067384f7d0ca4341ad78e81527af8b")
 
     patch("ioda_cmake_import.patch", when="@2.9.0.20250826")
+    patch("ioda_yaml_root.patch", when="@2.9.0.20250826")
 
     variant("doc", default=False, description="Build IODA documentation")
     # Let's always assume IODA_BUILD_LANGUAGE_FORTRAN=on.
@@ -101,11 +102,11 @@ def check(self):
             else:
                 ctest("--timeout", "120")
 
-    @run_after("install")
-    def fix_ioda_yaml_root_path(self):
-        with when("@2.9.0.20250826"):
-            filter_file(
-                join_path(self.build_directory, "share/test/testinput/"),
-                join_path(self.prefix, "share/ioda/yaml"),
-                join_path(self.prefix, "lib64/cmake/ioda/ioda-import.cmake"),
-            )
+    #@run_after("install")
+    #def fix_ioda_yaml_root_path(self):
+    #    with when("@2.9.0.20250826"):
+    #        filter_file(
+    #            join_path(self.build_directory, "share/test/testinput/"),
+    #            join_path(self.prefix, "share/ioda/yaml"),
+    #            join_path(self.prefix, "lib64/cmake/ioda/ioda-import.cmake"),
+    #        )
diff --git a/repos/spack_stack/spack_repo/spack_stack/packages/oops/package.py b/repos/spack_stack/spack_repo/spack_stack/packages/oops/package.py
index ad1710471..ac522e46b 100644
--- a/repos/spack_stack/spack_repo/spack_stack/packages/oops/package.py
+++ b/repos/spack_stack/spack_repo/spack_stack/packages/oops/package.py
@@ -22,6 +22,7 @@ class Oops(CMakePackage):
     version("1.10.0.20250827", commit="91889ad09d3789f14a1184701dd80a4913d3ce3e")
 
     patch("include_algorithm.patch", when="@1.10.0.20250827")
+    patch("patch-1.10.0.atlas.mac.patch", when="@1.10.0.20250827")
 
     variant("l95", default=True, description="Build LORENZ95 toy model")
     variant("mkl", default=False, description="Use MKL for LAPACK implementation (if available)")
diff --git a/repos/spack_stack/spack_repo/spack_stack/packages/oops/patch-1.10.0.atlas.mac.patch b/repos/spack_stack/spack_repo/spack_stack/packages/oops/patch-1.10.0.atlas.mac.patch
new file mode 100644
index 000000000..7b54487ba
--- /dev/null
+++ b/repos/spack_stack/spack_repo/spack_stack/packages/oops/patch-1.10.0.atlas.mac.patch
@@ -0,0 +1,34 @@
+diff --git a/src/oops/util/ParallelFieldSetIO.cc b/src/oops/util/ParallelFieldSetIO.cc
+index 04e4c55c..0a07a9ba 100644
+--- a/src/oops/util/ParallelFieldSetIO.cc
++++ b/src/oops/util/ParallelFieldSetIO.cc
+@@ -80,9 +80,6 @@ atlas::FieldSet ParallelFieldSetIO::ioFieldSet(const atlas::FieldSet& nativeFiel
+             case atlas::array::DataType::KIND_INT32:
+                 ioFieldSet.add(functionSpace_.createField<int>(fieldSetConfig));
+                 break;
+-            case atlas::array::DataType::KIND_INT64:
+-                ioFieldSet.add(functionSpace_.createField<int64_t>(fieldSetConfig));
+-                break;
+             case atlas::array::DataType::KIND_REAL32:
+                 ioFieldSet.add(functionSpace_.createField<float>(fieldSetConfig));
+                 break;
+@@ -105,9 +102,6 @@ void ParallelFieldSetIO::writeFieldByTypeAndRank(const atlas::Field& field,
+         case atlas::array::DataType::KIND_INT32:
+             dispatchWriteField<int>(field, netcdfGeneralIDs, netcdfVarID);
+             break;
+-        case atlas::array::DataType::KIND_INT64:
+-            dispatchWriteField<int64_t>(field, netcdfGeneralIDs, netcdfVarID);
+-            break;
+         case atlas::array::DataType::KIND_REAL32:
+             dispatchWriteField<float>(field, netcdfGeneralIDs, netcdfVarID);
+             break;
+@@ -129,9 +123,6 @@ void ParallelFieldSetIO::readFieldByTypeAndRank(atlas::Field& field,
+         case atlas::array::DataType::KIND_INT32:
+             dispatchReadField<int>(field, netcdfGeneralIDs, netcdfVarID);
+             break;
+-        case atlas::array::DataType::KIND_INT64:
+-            dispatchReadField<int64_t>(field, netcdfGeneralIDs, netcdfVarID);
+-            break;
+         case atlas::array::DataType::KIND_REAL32:
+             dispatchReadField<float>(field, netcdfGeneralIDs, netcdfVarID);
+             break;