Disable Cygwin support

HISTORY.rst

@@ -7,7 +7,6 @@ PlatformIO 2.0
 2.3.2 (2015-09-??)
 ~~~~~~~~~~~~~~~~~~
 
-* Allowed PlatformIO to be run within Cygwin environment
 * Allowed to use ST-Link uploader for mbed-based projects
 * Explained how to use ``lib`` directory from the PlatformIO based project in
   ``readme.txt`` which will be automatically generated using

platformio/__init__.py

@@ -1,7 +1,7 @@
 # Copyright (C) Ivan Kravets <me@ikravets.com>
 # See LICENSE for details.
 
-VERSION = (2, 3, "2.dev3")
+VERSION = (2, 3, "2.dev4")
 __version__ = ".".join([str(s) for s in VERSION])
 
 __title__ = "platformio"

platformio/exception.py

@@ -196,3 +196,11 @@ class PlatformioUpgradeError(PlatformioException):
         "2. Try different installation/upgrading steps: "
         "http://docs.platformio.org/en/latest/installation.html"
     )
+
+
+class CygwinEnvDetected(PlatformioException):
+
+    MESSAGE = (
+        "PlatformIO does not work within Cygwin environment. "
+        "Use native Terminal instead."
+    )

platformio/util.py

@@ -116,13 +116,8 @@ def get_systype():
     type_ = data[0].lower()
     arch = data[4].lower() if data[4] else ""
 
-    # use native Windows binaries for Cygwin
     if "cygwin" in type_:
-        if arch == "i686":
-            arch = "x86"
-        elif arch == "x86_64":
-            arch = "amd64"
-        type_ = "windows"
+        raise exception.CygwinEnvDetected()
 
     return "%s_%s" % (type_, arch) if arch else type_