Fix package "shasum" validation on Mac OS X 10.11.2 // Resolve #429

HISTORY.rst

@@ -14,6 +14,8 @@ PlatformIO 2.0
   development platform
 * Fixed project generator for CLion IDE
   (`issue #422 <https://github.com/platformio/platformio/issues/422>`_)
+* Fixed package ``shasum`` validation on Mac OS X 10.11.2
+  (`issue #429 <https://github.com/platformio/platformio/issues/429>`_)
 
 2.7.0 (2015-12-30)
 ~~~~~~~~~~~~~~~~~~

docs/installation.rst

@@ -58,6 +58,10 @@ The latest stable version of PlatformIO may be installed or upgraded via
 
     pip install -U platformio
 
+If ``pip`` command is not available run ``easy_install pip`` or use
+:ref:`installation_installer_script` which will install ``pip`` and
+``platformio`` automatically.
+
 Note that you may run into permissions issues running these commands. You have
 a few options here:
 
@@ -67,9 +71,6 @@ a few options here:
 * Run the command in a `virtualenv <https://virtualenv.pypa.io>`_ local to a
   specific project working set.
 
-If ``pip`` command is not available or you have problems with it try
-:ref:`installation_installer_script`.
-
 .. _installation_installer_script:
 
 b) Installer Script

platformio/downloader.py

@@ -88,12 +88,12 @@ class FileDownloader(object):
         try:
             result = util.exec_command(["sha1sum", self._destination])
             dlsha1 = result['out']
-        except OSError:
+        except (OSError, ValueError):
             try:
                 result = util.exec_command(
                     ["shasum", "-a", "1", self._destination])
                 dlsha1 = result['out']
-            except OSError:
+            except (OSError, ValueError):
                 pass
 
         if dlsha1: