Unable to install Timeseries add-on: command failed

[wvdvegte]

Unable to install Timeseries add-on: command failed

[PrimozGodec]

orange3-timseries has severe problems with lxml library with some wheels missing:

• MacOS with Intel processor: lxml build wheels for MacOS SDK 11. Our old installer (for versions <=3.35) included Python built on SDK 10.9. Solution: install a new version of Orange since our new Intel installer fixes the issue. It uses Python built on SDK 11.
• MacOS with Apple silicon processor: lxml doesn't provide wheels for ARM for Python <=3.10, which causes problems in our installer. We asked them to provide those wheels: https://bugs.launchpad.net/lxml/+bug/1980575. We are waiting for a response.

[wvdvegte]

So, how does that explain that the Timeseries add-on is present on my Silicon Mac? Does it mean that, unknowingly, I'm running 3.36 for Intel processors through Rosetta 2? If that is the case, I guess I should suggest to my friend that he downloads and installs the Intel version of 3.36 ...

[PrimozGodec]

There may be two reasons:

• you are running the Orange 3.36.1 (from Orange 3.36.1 Installer for Intel) through Rosetta.
• you have appropriate libraries to build LXML on your computer.

So until we (I'm looking into how to get rid of LXML) or LXML solve the problem, the solutions are:

• Use Orange Intel installer even though you are having Apple silicon. We noticed some problems with this installer on Apple Silicon after updating Python, so it may not work for some.
• Use the Apple silicon installer and install appropriate libraries to build lxml before installing Time Series addon:

  brew install automake libtool
  /Applications/Orange.app/Contents/MacOS/pip install cython
  

[wvdvegte]

I'm running 3.36.2 so it must be the second reason. I'm not aware of having ever installed "appropriate libraries to build LXML on your computer", at least not consciously, because I don't even know what LXML is ...

[kraaidelft]

brew install automake libtool
/Applications/Orange.app/Contents/MacOS/pip install cython

Doesn't work, I get a:
Error: Git must be installed and in your PATH!
/usr/local/Homebrew/Library/Homebrew/version.rb:368:in `initialize': Version value must be a string; got a NilClass () (TypeError)

[kraaidelft]

• Use Orange Intel installer even though you are having Apple silicon. We noticed some problems with this installer on Apple Silicon after updating Python, so it may not work for some.

Orange3 doesn't startup at all.

[kraaidelft]

• MacOS with Intel processor: lxml build wheels for MacOS SDK 11. Our old installer (for versions <=3.35) included Python built on SDK 10.9. Solution: install a new version of Orange since our new Intel installer fixes the issue. It uses Python built on SDK 11.

It works

[PrimozGodec]

So, the current state:

• I am helping lxml to improve their wheel-building system: lxml/lxml#388; when it is finished, they will also provide MacOS ARM wheels
• Since it can take some time to be finished, I propose skipping installing yfinace and pandas_datasets on MacOS that require lxml library for now. #262 It will only affect the Yahoo widget.

[PrimozGodec]

We merged the temporary solution from #262 and made a release. Now, orange3-timeseries should install successfully. It will lack the Yahoo finance widget on MacOS. We are working towards getting this widget back as soon as possible by helping lxml maintainer to provide wheels.

[PrimozGodec]

We re-added the Yahoo widget for Mac users. :) Please update your orang3-timeseries version to 0.6.2 in add-on dialog.