modules: get rid of the .*machine variables

They're hardly used, and can be gotten directly from the Environment
instead

mesonbuild/modules/__init__.py

@@ -16,7 +16,6 @@ from ..programs import ExternalProgram
 if T.TYPE_CHECKING:
     from ..interpreter import Interpreter
     from ..interpreter.interpreter import ProgramVersionFunc
-    from ..interpreter.interpreterobjects import MachineHolder
     from ..interpreterbase import TYPE_var, TYPE_kwargs
     from ..programs import OverrideProgram
     from ..wrap import WrapMode
@@ -52,9 +51,6 @@ class ModuleState:
         self.man = interpreter.build.get_man()
         self.global_args = interpreter.build.global_args.host
         self.project_args = interpreter.build.projects_args.host.get(interpreter.subproject, {})
-        self.build_machine = T.cast('MachineHolder', interpreter.builtin['build_machine']).held_object
-        self.host_machine = T.cast('MachineHolder', interpreter.builtin['host_machine']).held_object
-        self.target_machine = T.cast('MachineHolder', interpreter.builtin['target_machine']).held_object
         self.current_node = interpreter.current_node
 
     def get_include_args(self, include_dirs: T.Iterable[T.Union[str, build.IncludeDirs]], prefix: str = '-I') -> T.List[str]:

mesonbuild/modules/cuda.py

@@ -82,7 +82,7 @@ class CudaModule(NewExtensionModule):
         driver_version = 'unknown'
         for d in driver_version_table:
             if version_compare(cuda_version, d['cuda_version']):
-                driver_version = d.get(state.host_machine.system, d['linux'])
+                driver_version = d.get(state.environment.machines.host.system, d['linux'])
                 break
 
         return driver_version

mesonbuild/modules/external_project.py

@@ -65,8 +65,6 @@ class ExternalProject(NewExtensionModule):
         self.project_version = state.project_version
         self.subproject = state.subproject
         self.env = state.environment
-        self.build_machine = state.build_machine
-        self.host_machine = state.host_machine
         self.configure_command = configure_command
         self.configure_options = configure_options
         self.cross_configure_options = cross_configure_options
@@ -126,10 +124,10 @@ class ExternalProject(NewExtensionModule):
         configure_cmd += self._format_options(self.configure_options, d)
 
         if self.env.is_cross_build():
-            host = '{}-{}-{}'.format(self.host_machine.cpu,
-                                     'pc' if self.host_machine.cpu_family in {"x86", "x86_64"}
+            host = '{}-{}-{}'.format(state.environment.machines.host.cpu,
+                                     'pc' if state.environment.machines.host.cpu_family in {"x86", "x86_64"}
                                      else 'unknown',
-                                     self.host_machine.system)
+                                     state.environment.machines.host.system)
             d = [('HOST', None, host)]
             configure_cmd += self._format_options(self.cross_configure_options, d)
 

mesonbuild/modules/python3.py

@@ -41,7 +41,7 @@ class Python3Module(ExtensionModule):
     @typed_pos_args('python3.extension_module', str, varargs=(str, mesonlib.File, CustomTarget, CustomTargetIndex, GeneratedList, StructuredSources, ExtractedObjects, BuildTarget))
     @typed_kwargs('python3.extension_module', *_MOD_KWARGS, allow_unknown=True)
     def extension_module(self, state: ModuleState, args: T.Tuple[str, T.List[BuildTargetSource]], kwargs: SharedModuleKW):
-        host_system = state.host_machine.system
+        host_system = state.environment.machines.host.system
         if host_system == 'darwin':
             # Default suffix is 'dylib' but Python does not use it for extensions.
             suffix = 'so'