readenv boolify string values

Author: brandon-b-miller

numba_cuda/numba/cuda/cudadrv/driver.py

@@ -64,6 +64,8 @@ def _readenv(name, ctor, default):
     if value is None:
         return default() if callable(default) else default
     try:
+        if ctor is bool:
+            return bool(value.lower() in {'1', "True"})
         return ctor(value)
     except Exception:
         warnings.warn(
@@ -81,7 +83,6 @@ def _readenv(name, ctor, default):
     "to be available"
 )
 
-
 ENABLE_PYNVJITLINK = (
     _readenv("ENABLE_PYNVJITLINK", bool, False)
     or getattr(config, "ENABLE_PYNVJITLINK", None)