Hi Max, Debian bug https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=908756 reports frequent build failures of mpc on the reproducible builds infrastructure due to an issue with running sphinx in parallel:
> ... > [26/27] /usr/bin/sphinx-build -q -b html -d doc/doctrees > /build/1st/mpc-0.30/doc doc/html > FAILED: doc/html > /usr/bin/sphinx-build -q -b html -d doc/doctrees /build/1st/mpc-0.30/doc > doc/html > > Exception occurred: > File "/usr/lib/python3/dist-packages/sphinx/environment/__init__.py", line > 786, in get_doctree > doctree = pickle.load(f) > _pickle.UnpicklingError: pickle data was truncated > The full traceback has been saved in /tmp/sphinx-err-upx0cr5x.log, if you > want to report the issue to the developers. > Please also report this if it was a user error, so that a better error > message can be provided next time. > A bug report can be filed in the tracker at > <https://github.com/sphinx-doc/sphinx/issues>. Thanks! > [27/27] /usr/bin/sphinx-build -q -b man -d doc/doctrees > /build/1st/mpc-0.30/doc doc/man/man1 > ninja: build stopped: subcommand failed. > dh_auto_build: cd obj-i686-linux-gnu && LC_ALL=C.UTF-8 ninja -j10 -v returned > exit code 1 On Thu, Sep 13, 2018 at 04:22:00PM +0300, Adrian Bunk wrote: > dh compat >= 10 defaults to parallel building. > > Ideally doc/meson.build should be fixed to not run both in parallel, > but passing --no-parallel to dh in debian/rules would be an option > to workaround the problem. I had a look at meson, and while there seems to be no option to turn off parallelism in a specific meson.build, enforcing serialisation of doc targets by having manpage generation depend on the HTML docs should do the trick, perhaps like so: --- a/doc/meson.build +++ b/doc/meson.build @@ -1,4 +1,4 @@ -custom_target( +html = custom_target( 'HTML documentation', output: 'html', input: ['index.rst', 'conf.py'], @@ -16,4 +16,5 @@ build_by_default: true, install: true, install_dir: get_option('datadir'), + depends: html, ) What do you think? Florian
