Fix Cygwin disabling

platformio/__main__.py

@@ -3,6 +3,7 @@
 
 from os import listdir
 from os.path import join
+from platform import system
 from sys import exit as sys_exit
 from traceback import format_exc
 
@@ -70,6 +71,9 @@ def process_result(ctx, result, force, caller):  # pylint: disable=W0613
 
 def main():
     try:
+        if "cygwin" in system().lower():
+            raise exception.CygwinEnvDetected()
+
         # https://urllib3.readthedocs.org
         # /en/latest/security.html#insecureplatformwarning
         try:

platformio/util.py

@@ -115,10 +115,6 @@ def get_systype():
     data = uname()
     type_ = data[0].lower()
     arch = data[4].lower() if data[4] else ""
-
-    if "cygwin" in type_:
-        raise exception.CygwinEnvDetected()
-
     return "%s_%s" % (type_, arch) if arch else type_