* if env keyword passed to subprocess, make sure that windows subproc…

…ess gets SYSTEMROOT env variable

spyder/utils/programs.py

@@ -138,6 +138,19 @@ def alter_subprocess_kwargs_by_platform(**kwargs):
         # We "or" them together
         CONSOLE_CREATION_FLAGS |= CREATE_NO_WINDOW
         kwargs.setdefault('creationflags', CONSOLE_CREATION_FLAGS)
+
+        # ensure Windows subprocess environment has SYSTEMROOT, but variable
+        # is case insensitive
+        if ((kwargs.get('env') is not None) and
+            ('SYSTEMROOT' not in map(str.upper, kwargs['env'].keys()))):
+            sys_root_key = None
+            for k, v in os.environ.items():
+                if 'SYSTEMROOT' == k.upper():
+                    sys_root_key = k
+                    break  # don't risk multiple values
+            if sys_root_key is not None:
+                kwargs['env'].update({sys_root_key: os.environ[sys_root_key]})
+
     return kwargs