Beware macOS 11.0 Big Sur and python3.9

[Chris Alemany]

Hello all,

I just spent an hour re-activating my weewx install and a couple other services after I ran brew upgrade and it updated ffmpeg and some other utilities requiring python 3.9.

It turns out a host of pip modules, including Cheetah3 and pyephem, don’t build under 3.9 of pip quite yet. (Complaining of int -> str errors)

So I had to make sure the modules were available to the 3.8 version and then run weewx specifically with that version rather than with the generic python3 command.

A bit of an unexpected headache but such is life. Hopefully this message warns others.. and hopefully in time the modules will come along in 3.9

Cheers
Chris

[vince]

anybody gutsy enough to try weewx on the new M1 chip os ?

[geoffs...@gmail.com]

yes. 

Looks like python 3.8.2 and whew will build. Has this problem when you try to generate html files

weewx[5185] INFO __main__: Initializing weewx version 4.2.0

weewx[5185] INFO __main__: Using Python 3.8.2 (default, Oct  2 2020, 10:45:41) 

[Clang 12.0.0 (clang-1200.0.32.27)]

weewx[5185] INFO __main__: Platform macOS-11.0.1-arm64-arm-64bit

weewx[5185] INFO __main__: Locale is 'C/UTF-8/C/C/C/C'

weewx[5185] INFO __main__: Using configuration file /Users/Shared/weewx/weewx.conf

weewx[5185] INFO __main__: Debug is 0

weewx[5185] INFO weewx.engine: Loading station type Simulator (weewx.drivers.simulator)

weewx[5185] INFO weewx.engine: StdConvert target unit is 0x1

weewx[5185] INFO weewx.engine: Archive will use data binding wx_binding

weewx[5185] INFO weewx.engine: Record generation will be attempted in 'hardware'

weewx[5185] INFO weewx.engine: Using archive interval of 300 seconds (specified in weewx configuration)

weewx[5185] INFO weewx.restx: StationRegistry: Registration not requested.

weewx[5185] INFO weewx.restx: Wunderground: Posting not enabled.

weewx[5185] INFO weewx.restx: PWSweather: Posting not enabled.

weewx[5185] INFO weewx.restx: CWOP: Posting not enabled.

weewx[5185] INFO weewx.restx: WOW: Posting not enabled.

weewx[5185] INFO weewx.restx: AWEKAS: Posting not enabled.

weewx[5185] INFO __main__: Starting up weewx version 4.2.0

weewx[5185] INFO weewx.engine: Clock error is -0.01 seconds (positive is fast)

weewx[5185] INFO weewx.engine: Using binding 'wx_binding' to database 'weewx.sdb'

weewx[5185] INFO weewx.manager: Starting backfill of daily summaries

weewx[5185] INFO weewx.engine: Starting main packet loop.

wee_reports[5189] INFO weewx.engine: StdConvert target unit is 0x1

wee_reports[5189] INFO weewx.engine: Archive will use data binding wx_binding

wee_reports[5189] INFO weewx.engine: Record generation will be attempted in 'hardware'

wee_reports[5189] INFO weewx.engine: Using archive interval of 300 seconds (specified by hardware)

wee_reports[5189] INFO weewx.restx: StationRegistry: Registration not requested.

wee_reports[5189] INFO weewx.restx: Wunderground: Posting not enabled.

wee_reports[5189] INFO weewx.restx: PWSweather: Posting not enabled.

wee_reports[5189] INFO weewx.restx: CWOP: Posting not enabled.

wee_reports[5189] INFO weewx.restx: WOW: Posting not enabled.

wee_reports[5189] INFO weewx.restx: AWEKAS: Posting not enabled.

wee_reports[5189] INFO weewx.cheetahgenerator: Generated 8 files for report SeasonsReport in 0.36 seconds

wee_reports[5189] ERROR weewx.reportengine: Caught unrecoverable exception in generator 'weewx.imagegenerator.ImageGenerator'

wee_reports[5189] ERROR weewx.reportengine:         ****  The _imagingft C module is not installed

wee_reports[5189] ERROR weewx.reportengine:         ****  Traceback (most recent call last):

wee_reports[5189] ERROR weewx.reportengine:         ****    File "/Users/Shared/weewx/bin/weewx/reportengine.py", line 196, in run

wee_reports[5189] ERROR weewx.reportengine:         ****      obj.start()

wee_reports[5189] ERROR weewx.reportengine:         ****    File "/Users/Shared/weewx/bin/weewx/reportengine.py", line 281, in start

wee_reports[5189] ERROR weewx.reportengine:         ****      self.run()

wee_reports[5189] ERROR weewx.reportengine:         ****    File "/Users/Shared/weewx/bin/weewx/imagegenerator.py", line 41, in run

wee_reports[5189] ERROR weewx.reportengine:         ****      self.genImages(self.gen_ts)

wee_reports[5189] ERROR weewx.reportengine:         ****    File "/Users/Shared/weewx/bin/weewx/imagegenerator.py", line 263, in genImages

wee_reports[5189] ERROR weewx.reportengine:         ****      image = plot.render()

wee_reports[5189] ERROR weewx.reportengine:         ****    File "/Users/Shared/weewx/bin/weeplot/genplot.py", line 206, in render

wee_reports[5189] ERROR weewx.reportengine:         ****      self._renderBottom(draw)

wee_reports[5189] ERROR weewx.reportengine:         ****    File "/Users/Shared/weewx/bin/weeplot/genplot.py", line 386, in _renderBottom

wee_reports[5189] ERROR weewx.reportengine:         ****      bottom_label_font = weeplot.utilities.get_font_handle(self.bottom_label_font_path, self.bottom_label_font_size)

wee_reports[5189] ERROR weewx.reportengine:         ****    File "/Users/Shared/weewx/bin/weeplot/utilities.py", line 562, in get_font_handle

wee_reports[5189] ERROR weewx.reportengine:         ****      font = ImageFont.truetype(fontpath_str, *args)

wee_reports[5189] ERROR weewx.reportengine:         ****    File "/Library/Python/3.8/site-packages/PIL/ImageFont.py", line 836, in truetype

wee_reports[5189] ERROR weewx.reportengine:         ****      return freetype(font)

wee_reports[5189] ERROR weewx.reportengine:         ****    File "/Library/Python/3.8/site-packages/PIL/ImageFont.py", line 833, in freetype

wee_reports[5189] ERROR weewx.reportengine:         ****      return FreeTypeFont(font, size, index, encoding, layout_engine)

wee_reports[5189] ERROR weewx.reportengine:         ****    File "/Library/Python/3.8/site-packages/PIL/ImageFont.py", line 169, in __init__

wee_reports[5189] ERROR weewx.reportengine:         ****      if core.HAVE_RAQM:

wee_reports[5189] ERROR weewx.reportengine:         ****    File "/Library/Python/3.8/site-packages/PIL/ImageFont.py", line 43, in __getattr__

wee_reports[5189] ERROR weewx.reportengine:         ****      raise ImportError("The _imagingft C module is not installed")

wee_reports[5189] ERROR weewx.reportengine:         ****  ImportError: The _imagingft C module is not installed

wee_reports[5189] ERROR weewx.reportengine:         ****  Generator terminated

wee_reports[5189] INFO weewx.reportengine: Copied 5 files to /Users/Shared/weewx/public_html

Looks to be an issue with Pillow?

[geoffs...@gmail.com]

Can be done. Will not run using launchctl as it tries to run as ARM64 rather than x86 under python 3.8.2. If manually started as a daemon, it does work. Everything needed to be installed and run using a version of the terminal that was set to Rosetta. Go to info on the Terminal app and tick Rosetta box. Needed to install both libjpeg and freetype from source before I could get a working PIL. This was a total PITA and still can't be run at startup without some sort of script. That being said, it does "work". Everything I tried to get a native ARM64 version failed with regard to getting a working PIL. It doesn't seem to be able to make a working library that allow Image to be imported from PIL.  

https://groups.google.com/g/weewx-development/c/RScMt3XbRN4