Fix meson.version().version_compare() regression in subproject

mesonbuild/interpreter/dependencyfallbacks.py

@@ -17,7 +17,7 @@ if T.TYPE_CHECKING:
 
 class DependencyFallbacksHolder(MesonInterpreterObject):
     def __init__(self, interpreter: 'Interpreter', names: T.List[str], allow_fallback: T.Optional[bool] = None) -> None:
-        super().__init__()
+        super().__init__(subproject=interpreter.subproject)
         self.interpreter = interpreter
         self.subproject = interpreter.subproject
         self.coredata = interpreter.coredata

mesonbuild/interpreter/interpreter.py

@@ -2794,4 +2794,4 @@ This will become a hard error in the future.''', location=self.current_node)
             raise InterpreterException('stop cannot be less than start')
         if step < 1:
             raise InterpreterException('step must be >=1')
-        return RangeHolder(start, stop, step)
+        return RangeHolder(start, stop, step, subproject=self.subproject)

mesonbuild/interpreter/mesonmain.py

@@ -22,7 +22,7 @@ if T.TYPE_CHECKING:
 
 class MesonMain(MesonInterpreterObject):
     def __init__(self, build: 'build.Build', interpreter: 'Interpreter'):
-        super().__init__()
+        super().__init__(subproject=interpreter.subproject)
         self.build = build
         self.interpreter = interpreter
         self.methods.update({'get_compiler': self.get_compiler_method,

mesonbuild/interpreterbase/baseobjects.py

@@ -82,7 +82,7 @@ class ObjectHolder(InterpreterObject, T.Generic[InterpreterObjectTypeVar]):
         return f'<[{type(self).__name__}] holds [{type(self.held_object).__name__}]: {self.held_object!r}>'
 
 class RangeHolder(MesonInterpreterObject):
-    def __init__(self, start: int, stop: int, step: int, *, subproject: T.Optional[str] = None) -> None:
+    def __init__(self, start: int, stop: int, step: int, *, subproject: str) -> None:
         super().__init__(subproject=subproject)
         self.range = range(start, stop, step)
 

test cases/unit/82 meson version compare/meson.build

@@ -15,3 +15,5 @@ endif
 
 # This will error out if elif cause did not enter
 assert(foo_dep.found(), 'meson.version_compare did not work')
+
+subproject('foo')

test cases/unit/82 meson version compare/subprojects/foo/meson.build

@@ -0,0 +1,8 @@
+project('foo', meson_version: '>= 0.1')
+
+if meson.version().version_compare('>= 0.55')
+  # This Should not produce warning even when using function not available in
+  # meson 0.1.
+  foo_dep = declare_dependency()
+  meson.override_dependency('foo2', foo_dep)
+endif