I tried to patch against ubunut's 0.3.7-1build1 and required the attached diff
That's a good reminder that I had forgotten to push the updated dummy packages to the stable repository (see #1215).
We use dummy version 0.3.8 which is much better than trying to patch an older version. This is supported on Debian Stretch and Ubuntu Yakkety only.
Ahhh, okay. I was building for Trusty. It looks like Yakkety is still on 0.3.7 though. Only Zesty has 0.3.8
It doesn't matter, you can use 0.3.8 everywhere. (it's a cleaned up version)
I tried looking for it, but didn't realised it was in Yakkety & Stretch repos. I will try adding them side-by-side with the Trusty one and see if that works as expected.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/1427