Patch tempestremap to relax tolerance on valid grid elements

var/spack/repos/builtin/packages/tempestremap/grid-elements-tolerance.patch

@@ -0,0 +1,12 @@
+diff -ruN tempestremap-2.2.0/src/GridElements.cpp tempestremap-2.2.0-patch/src/GridElements.cpp
+--- tempestremap-2.2.0/src/GridElements.cpp	2023-06-14 11:34:02.000000000 -0600
++++ tempestremap-2.2.0-patch/src/GridElements.cpp	2024-11-03 09:37:36.140268861 -0700
+@@ -1727,7 +1727,7 @@
+
+ #endif
+ */
+-			if (dDot > 0.0) {
++			if (dDot > ReferenceTolerance) {
+ 				printf("\nError detected (orientation):\n");
+ 				printf("  Face %i, Edge %i, Orientation %1.5e\n",
+ 					i, j, dDot);

var/spack/repos/builtin/packages/tempestremap/package.py

@@ -44,6 +44,10 @@ class Tempestremap(AutotoolsPackage):
     depends_on("blas")
     depends_on("lapack")
 
+    # Relax tolerance for valid grid elements, needed by high resolution meshes
+    # in mptempest
+    patch("grid-elements-tolerance.patch", when="@2.2.0")
+
     def configure_args(self):
         spec = self.spec
         options = []