interpreter: move 'env' to type_checking

mesonbuild/interpreter/interpreter.py

@@ -51,6 +51,7 @@ from .interpreterobjects import (
     NullSubprojectInterpreter,
 )
 from .type_checking import (
+    ENV_KW,
     INSTALL_MODE_KW,
     LANGUAGE_KW,
     NATIVE_KW,
@@ -189,7 +190,7 @@ TEST_KWARGS: T.List[KwargInfo] = [
               listify=True, default=[], since='0.46.0'),
     KwargInfo('priority', int, default=0, since='0.52.0'),
     # TODO: env needs reworks of the way the environment variable holder itself works probably
-    KwargInfo('env', (EnvironmentVariablesObject, list, dict, str, NoneType)),
+    ENV_KW,
     KwargInfo('suite', ContainerTypeInfo(list, str), listify=True, default=['']),  # yes, a list of empty string
 ]
 

mesonbuild/interpreter/type_checking.py

@@ -6,6 +6,7 @@
 import typing as T
 
 from .. import compilers
+from ..build import EnvironmentVariables
 from ..coredata import UserFeatureOption
 from ..interpreterbase.decorators import KwargInfo, ContainerTypeInfo
 from ..mesonlib import FileMode, MachineChoice
@@ -126,3 +127,8 @@ REQUIRED_KW: KwargInfo[T.Union[bool, UserFeatureOption]] = KwargInfo(
     default=True,
     # TODO: extract_required_kwarg could be converted to a convertor
 )
+
+ENV_KW: KwargInfo[T.Union[EnvironmentVariables, T.List, T.Dict, str, NoneType]] = KwargInfo(
+    'env',
+    (EnvironmentVariables, list, dict, str),
+)