evolve: use obsutil._getobsfate() directly It's been there since 4.5 (265cd9e19d26), we can safely rely on it. It's necessary though to use the correct spelling of superseded.

evolve: remove dead code

evolve: use utility._singlesuccessor() in _solveunstable()

evolve: preliminary indentation The whole code will end up in a try/except clause. We pre-indent the code to clarify the next patch.

evolve: provide cache argument to obsutil.successorssets() correctly After 68f3e819d41d (4.3) the 3rd argument to that function is `closest`.

pullbundle: random.sample() chokes on a spanset, turn it into a list instead On Python 3.

pullbundle: use % instead of .format() because % exists for bytes

tests: test that debugpullbundlecacheoverlap command works

pullbundle: compatibility for progress in hg <= 4.6

compat: add hg version to progress compatibility code

serverminitopic: ask pytype to disable import-error on a block handling hg 4.5

topic: ask pytype to disable import-error on a block handling hg 4.5

evolve: remove unused struct import

compat: ask pytype to ignore some warnings It's expected to have a bunch of import and attribute errors in this module because it's for compatibility with different versions of hg and Python. Although it doesn't explain why a function wouldn't have __code__ attribute? So far I think it's a quirk of pytype.