Remove useless EmptyExternalProgram

It is only used by Environment.get_exe_wrapper() and every callers were
handling None already. Type annotation was wrong, it already could
return None for the case an exe wrapper is needed but none is provided.

1 files changed, 3 insertions, 5 deletions

diff --git a/mesonbuild/environment.py b/mesonbuild/environment.py
index a9df75e..9691cf1 100644
--- a/mesonbuild/environment.py
+++ b/mesonbuild/environment.py
@@ -25,9 +25,7 @@ from .mesonlib import (
     search_version, MesonBugException
 )
 from . import mlog
-from .programs import (
-    ExternalProgram, EmptyExternalProgram
-)
+from .programs import ExternalProgram
 
 from .envconfig import (
     BinaryTable, MachineInfo, Properties, known_cpu_families, CMakeVariables,
@@ -852,7 +850,7 @@ class Environment:
             return value
         return not machine_info_can_run(self.machines[for_machine])
 
-    def get_exe_wrapper(self) -> ExternalProgram:
+    def get_exe_wrapper(self) -> T.Optional[ExternalProgram]:
         if not self.need_exe_wrapper():
-            return EmptyExternalProgram()
+            return None
         return self.exe_wrapper