Daniel Kahn Gillmor wrote on 09.11.2019 05:54: > On Fri 2019-11-08 14:04:25 +0100, Patrick Brunschwig wrote: >> My aim is to require a subset of the tools required by Mozilla to build >> Thunderbird - the python scripts in Enigmail were all copied from the >> Mozilla build toolchain, and I never modified any of them. If the >> Mozilla build tools are migrated to python3, then I'll be happy to copy >> them over to Enigmail. > > The Mozilla build tools are migrated to python3: > > https://bugzilla.mozilla.org/show_bug.cgi?id=1388447 > > But they have grown and changed quite a bit since you copied them into > enigmail, it looks like. > > > https://sources.debian.org/src/thunderbird/1:68.2.1-1/python/mozbuild/mozbuild/ > > JarMaker.py is now jar.py, etc. > > copying all of that over to enigmail's source tree seems problematic at > best -- there's no clear maintenance plan, and it's a ton of code. > > It looks like there are three specific commands during the build that > invoke any of the python code: > > Makefile: util/checkFiles.py > lang/Makefile: $(PYTHON) ../util/JarMaker.py -j $(DIST) -t . -f flat > $(BUILD)/lang/jar.mn > ui/content/Makefile: $(PYTHON) $(DEPTH)/util/Preprocessor.py -I $(INCLUDE) > -o $@ $< > > checkFiles.py and Preprocessor.py appear to be relatively > straightforward to port, just using /usr/bin/2to3-2.7 and doing > straightforward manual cleanup. > > But JarMaker.py has a handful of weird things that weren't very > py3-friendly: > > - use of cmp() (see > https://docs.python.org/3.0/whatsnew/3.0.html#ordering-comparisons) > > - TypeError: '>' not supported between instances of 'time.struct_time' > and 'int' when doing: > > if (m.group('optOverwrite') > or (getModTime(realsrc) > > outHelper.getDestModTime(m.group('output')))): > > anyway, i think i've fixed them on my py3 branch on gitlab: > > https://gitlab.com/dkg/enigmail/commits/py3 > > enigmail now builds ok for me on a dedicated machine, but it is a little > bit strange -- the updated util/Preprocessor.py sometimes leaves a > zero-byte file, rather than a preprocessed file. I can't figure out > what's causing that, though i note that it is more likely if no > __pycache__ directory is present. > > If i work around that by rebuilding when i observe that the output is > the empty file, then the built package ends up looking identical to the > package i built with python2. > > I am afraid i don't understand util/Preprocessor.py well, and it appears > to only be used directly to strip out some UI for postbox in a single > file (ui/content/enigmailMessengerOverlay.xul), which doesn't seem like > a great tradeoff to me -- i'd rather have a sleeker and more robust > build system if possible. > > Anyway, feel free to take a look at my py3 branch, and adopt/merge what > you like. > > I've uploaded something close to it to debian/experimental, so we can > see how that turns out.
Thanks Daniel, I'll look into it :-) -Patrick
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