Update h2yaml package

Author: thilinarmtb

packages/h2yaml/package.py

@@ -4,6 +4,15 @@
 from spack.package import *
 
 
+def find_libclang(root):
+    lib_ext = "dylib" if sys.platform == "darwin" else "so"
+    regex = re.compile(rf"libclang(?:-\d+)?.{lib_ext}(?:.\d+)?")
+    for root, dirs, files in os.walk(root):
+        for file in files:
+            if regex.match(file):
+                return os.path.join(root, file)
+
+
 class H2yaml(PythonPackage):
     """Matrices describing affine transformation of the plane."""
 
@@ -29,11 +38,30 @@ class H2yaml(PythonPackage):
 
     def setup_build_environment(self, env):
         """Wrapper until spack has a real implementation of setup_test_environment()"""
+        if self.version < Version("0.4.1"):
+            return
+
         if self.run_tests:
             # Workarround to some bug with pythonpath
             env.prepend_path("PYTHONPATH", self.stage.source_path)
             self.setup_test_environment(env)
 
+    def setup_run_environment(self, env):
+        if self.version < Version("0.4.1"):
+            return
+
+        super().setup_run_environment(env)
+        s = self.spec["llvm"]
+        llvm_config = os.path.join(s.prefix.bin, "llvm-config-" + str(s.version[0]))
+        if not os.path.exists(llvm_config):
+            llvm_config = os.path.join(s.prefix.bin, "llvm-config")
+        output = Executable(llvm_config)("--libdir", output=str, error=str, fail_on_error=False)
+        lib_path = output.rstrip()
+        env.set("LIBCLANG_LIBRARY_FILE", find_libclang(lib_path))
+
+    def setup_test_environment(self, env):
+        self.setup_run_environment(env)
+
     @run_after("install")
     @on_package_attributes(run_tests=True)
     def install_test(self):