UPDATE: I've written a longer answer on how to automate upgrading these plugins, Xcode 8 included.
You can get some* plugins to work with Xcode 5 by adding a DVTPlugInCompatibilityUUIDs
array into each plugin's Info.plist
. Then add a UUID string to this array.
<key>DVTPlugInCompatibilityUUIDs</key>
<array>
<string>37B30044-3B14-46BA-ABAA-F01000C27B63</string>
</array>
To get the UUID, execute defaults read /Applications/Xcode.app/Contents/Info DVTPlugInCompatibilityUUID
in console.
* E.g. DisableAnimations
and HideDistractions
work, while CurrentLineHighlighter
invariably crashes Xcode.