limit to platform in install

install

@@ -14,6 +14,18 @@ def makedirs(dirname):
     if not os.path.exists(dirname):
         os.makedirs(dirname)
 
+def get_platform():
+    name = sys.platform
+    if name.startswith('darwin'):
+        name = 'darwin64'
+    elif name.startswith('linux'):
+        import platform
+        if platform.architecture()[0] == '64bit':
+            name = 'linux64'
+        else:
+            name = 'linux32'
+    return name
+
 class Install(Thread):
 
     base_url = 'http://downloads.openmedialibrary.com/'
@@ -98,18 +110,20 @@ class Install(Thread):
         release = self.get_release()
         self.status['release'] = release
         print("Installing Open Media Library:")
+        platform = get_platform()
         for module in sorted(release['modules']):
-            self.status['installing'] = module
-            self.status['progress'] = 0
-            self.status['size'] = 0
-            package_tar = release['modules'][module]['name']
-            url = self.url(package_tar)
-            package_tar = os.path.join(target, package_tar)
-            self.download(url, package_tar)
-            tar = tarfile.open(package_tar)
-            tar.extractall()
-            tar.close()
-            os.unlink(package_tar)
+            if release['modules'][module].get('platform', platform) == platform:
+                self.status['installing'] = module
+                self.status['progress'] = 0
+                self.status['size'] = 0
+                package_tar = release['modules'][module]['name']
+                url = self.url(package_tar)
+                package_tar = os.path.join(target, package_tar)
+                self.download(url, package_tar)
+                tar = tarfile.open(package_tar)
+                tar.extractall()
+                tar.close()
+                os.unlink(package_tar)
         os.symlink('openmedialibrary/ctl', 'ctl')
         self.status['progress'] = 0
         self.status['installing'] = 'setup'