[qutebrowser] Support for Qt < 5.12 dropped
me at the-compiler.org
Thu Nov 5 14:50:22 CET 2020
Another item on the path to v2.0.0 done: Support for Qt < 5.12 is now
dropped in qutebrowser. In other words, code for 2.5 years worth of old
Qt versions is now gone. That's *a lot* of code:
115 files changed, 538 insertions(+), 2322 deletions(-)
For the curious, here's the diff:
In practice, that means there's much less backwards compatibility and
random workarounds to worry about now, with 5.12 - 5.15 being the
supported Qt span rather than 5.7 - 5.15. Also, less CI jobs, thus less
waiting and less sporadic failures :)
The last time such a cleanup happened is with v1.0.0, more than three
years ago, where support for Qt 5.2 to 5.6 was dropped:
Judging from crash reports and such, Qt 5.7 and 5.8 saw very little
usage. Qt 5.9 (LTS) is perhaps a bit more problematic because it's
shipped by Ubuntu 18.04 LTS, but it's unsupported by Qt since May 2020,
the usage is relatively low, and Ubuntu 20.04 LTS has been available for
The most controversial part perhaps is dropping Qt 5.11, which is used
by the current Debian Stable (Buster). However, consider that:
- It's based on a Chromium version from 2018 with dozens (if not
hundreds) of security fixes missing, some of which for bugs which are
known to be exploited in the wild.
- It's not covered by Debian security support:
- It's unsupported upstream by Qt since May 2019.
- It has compatibility issues with various websites (GitHub, Twitch,
Android Developer documentation, YouTube, ...).
Since no newer Debian Stable is released yet, it's recommended to
install qutebrowser in a virtualenv with a newer version of Qt/PyQt:
Qt 5.12 is still supported by Qt as an LTS until December 2021 and
shipped in e.g. Ubuntu 20.04 LTS - thus, Qt 5.12 will likely stay
supported in qutebrowser until at least mid-2022 or so.
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