These tests almost certainly work on Darwin anyway, I just wanted to
keep things in a fixed, working configuration, while pushing Dexter
up.
I've left Windows unsupported as the dexter command line will need further
adjustment to run dbgeng. This can be abstracted through the %dexter
substitution, but is a task for another time.
This reverts commit cb935f3456.
Discussion in D68708 advises that green dragon is being briskly
refurbished, and it's good to have this patch up testing it.
Dexter (Debug Experience Tester) is a test-driver for our debug info
integration tests, reading a set of debug experience expectations and
comparing them with the actual behaviour of a program under a debugger.
More about Dexter can be found in the RFC:
http://lists.llvm.org/pipermail/llvm-dev/2019-October/135773.html
and the phab review in D68708. Not all the debuginfo tests have been
transformed into Dexter tests, and we look forwards to doing that
incrementally.
This commit mostly aims to flush out buildbots that are running
debuginfo-tests but don't have python 3 installed, possibly
green-dragon and some windows bots.
OCHyams