Cray manifest: automatically convert 'cray' platform to 'linux' (#34177)

* Automatically convert 'cray' platform to 'linux'

lib/spack/spack/cray_manifest.py

@@ -61,9 +61,16 @@ def compiler_from_entry(entry):
 def spec_from_entry(entry):
     arch_str = ""
     if "arch" in entry:
+        local_platform = spack.platforms.host()
+        spec_platform = entry["arch"]["platform"]
+        # Note that Cray systems are now treated as Linux. Specs
+        # in the manifest which specify "cray" as the platform
+        # should be registered in the DB as "linux"
+        if local_platform.name == "linux" and spec_platform.lower() == "cray":
+            spec_platform = "linux"
         arch_format = "arch={platform}-{os}-{target}"
         arch_str = arch_format.format(
-            platform=entry["arch"]["platform"],
+            platform=spec_platform,
             os=entry["arch"]["platform_os"],
             target=entry["arch"]["target"]["name"],
         )

lib/spack/spack/platforms/test.py

@@ -29,8 +29,9 @@ class Test(Platform):
     back_os = "debian6"
     default_os = "debian6"
 
-    def __init__(self):
-        super(Test, self).__init__("test")
+    def __init__(self, name=None):
+        name = name or "test"
+        super(Test, self).__init__(name)
         self.add_target(self.default, spack.target.Target(self.default))
         self.add_target(self.front_end, spack.target.Target(self.front_end))
 

lib/spack/spack/test/cray_manifest.py

@@ -233,6 +233,34 @@ def test_generate_specs_from_manifest():
     assert openmpi_spec["hwloc"]
 
 
+def test_translate_cray_platform_to_linux(monkeypatch):
+    """Manifests might list specs on newer Cray platforms as being "cray",
+    but Spack identifies such platforms as "linux". Make sure we
+    automaticaly transform these entries.
+    """
+    test_linux_platform = spack.platforms.test.Test("linux")
+
+    def the_host_is_linux():
+        return test_linux_platform
+
+    monkeypatch.setattr(spack.platforms, "host", the_host_is_linux)
+
+    cray_arch = JsonArchEntry(platform="cray", os="rhel8", target="x86_64").to_dict()
+    spec_json = JsonSpecEntry(
+        name="cray-mpich",
+        hash="craympichfakehashaaa",
+        prefix="/path/to/cray-mpich/",
+        version="1.0.0",
+        arch=cray_arch,
+        compiler=_common_compiler.spec_json(),
+        dependencies={},
+        parameters={},
+    ).to_dict()
+
+    (spec,) = entries_to_specs([spec_json]).values()
+    assert spec.architecture.platform == "linux"
+
+
 def test_translate_compiler_name():
     nvidia_compiler = JsonCompilerEntry(
         name="nvidia",