I would agree that if we move to Python 3, we need a script which installs Python 3 in an impossible to mess-up way on Mojave and High Sierra.
I don’t think the clang comparison is fair here. Python 2 is officially deprecated in 2020, we can’t expect security updates to the language or any libraries we depend on 6 months from now. It’s not really a question of if we stop supporting Python 2, but rather, when we stop supporting Python 2. It’s also worth noting that in Catalina, we will need some script to install XCode Command Line Tools since SVN, Python 2.7 and Python 3 are no longer included by default in the new Xcode. Given this, it doesn’t seem terrible if the script responsible for installing XCode CL tools also installs Python 3 for older Mac versions. Jonathan > On Jul 12, 2019, at 7:34 PM, Ryosuke Niwa <rn...@webkit.org> wrote: > > > >> On Fri, Jul 12, 2019 at 7:03 PM Michael Catanzaro <mcatanz...@igalia.com> >> wrote: >> On Fri, Jul 12, 2019 at 5:22 PM, Ryosuke Niwa <rn...@webkit.org> wrote: >> > I frequently do WebKit development in older versions of macOS to >> > diagnose old OS specific regressions, and having to install Python 3 >> > each time I install an old OS is too much of a trouble. >> >> I understand it would be a hassle. :/ But please consider it relative >> to the additional difficulty of rewriting all of webkitpy to support >> multiple versions of python at the same time, or setting up a wrapper >> layer of bash scripts around all of our python scripts to enter a >> virtualenv before executing the real script. > > Yeah, and it sounds strictly better that the trouble is handled by people who > maintain Python code who presumably more about Python than a random WebKit > contributor who may not know how to setup virtual environment in Python, > etc... > > Again, the argument that the difficulty can be overcome and it's a minor > inconvenience isn't convincing. I can, for example, suggest that we should > just build WebKit using the latest version of clang. Anyone who uses a system > that doesn't come with the latest release of clang should just build clang > instead. There is a significant cost in having to support MSVC and GC++ so we > should just use clang everywhere and only the latest version like Chromium > does. > > Each team & person has a different preference & perspective when it comes to > tooling. Please don't break someone else's working workflow based on your > preference. > > - R. Niwa >
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