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Bug #5934

closed

SaxonC Python wheels don't work in a virtual environment on Windows

Added by O'Neil Delpratt about 1 year ago. Updated 12 months ago.

Status:
Closed
Priority:
Normal
Assignee:
O'Neil Delpratt
Category:
Python Build
Start date:
2023-03-22
Due date:
% Done:

100%

Estimated time:
Found in version:
12.1
Fixed in version:
12.2
Platforms:

Description

Issue Reported by user here: https://saxonica.plan.io/boards/4/topics/9334

I get a strange error (probably on the console error output) running any Python using saxonche 12.1 from PyPi in a venv environment under Windows:

C:\Users\marti\PycharmProjects\SaxonCHE12.1PyPipTest\venv\Scripts\python.exe C:\Users\marti\PycharmProjects\SaxonCHE12.1PyPipTest\processor_test.py 
Error processing line 1 of C:\Users\marti\PycharmProjects\SaxonCHE12.1PyPipTest\venv\lib\site-packages\_preload_saxonche_12.1.0.pth:

  Traceback (most recent call last):
    File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python39_64\lib\site.py", line 169, in addpackage
      exec(line)
    File "<string>", line 1, in <module>
    File "<string>", line 18, in <module>

  FileNotFoundError: .load-order-saxonche-12.1.0 not found

Remainder of file ignored The program then runs without problem and its output appears. But any run of any program using SaxonC emits that error message/warning.

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 #1

Updated by Norm Tovey-Walsh about 1 year ago

I get a strange error (probably on the console error output) running
any Python using saxonche 12.1 from PyPi in a venv environment under
Windows:

Can you describe how you setup venv?

Be seeing you,
norm

--
Norm Tovey-Walsh
Saxonica

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 #2

Updated by Martin Honnen about 1 year ago

Either let I Pycharme do it or I do it from the command line with e.g. python3.exe -m venv saxonche-12.1-test and (on Windows cmd shell then) saxonche-12.1-test\Scripts\activate.bat and then python -m pip install saxonche.

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 #3

Updated by Norm Tovey-Walsh about 1 year ago

Either let I Pycharme do it or I do it from the command line with e.g.
python3.exe -m venv saxonche-12.1-test and (on Windows cmd shell then)
saxonche-12.1-test\Scripts\activate.bat and then python -m pip install
saxonche.

Thanks.

I’ve reproduced it:

PS C:\Users\Norman Walsh> .\saxon-test-1\Scripts\activate
(saxon-test-1) PS C:\Users\Norman Walsh> python -m pip install saxonche
Collecting saxonche
Using cached saxonche-12.1.0-cp39-cp39-win_amd64.whl (16.9 MB)
Installing collected packages: saxonche
Successfully installed saxonche-12.1.0
WARNING: You are using pip version 20.2.3; however, version 23.0.1 is available.
You should consider upgrading via the 'C:\Users\Norman Walsh\saxon-test-1\Scripts\python.exe -m pip install --upgrade pip' command.
(saxon-test-1) PS C:\Users\Norman Walsh> python .\smoke-he.py
Error processing line 1 of C:\Users\Norman Walsh\saxon-test-1\lib\site-packages_preload_saxonche_12.1.0.pth:

Traceback (most recent call last):
File "C:\Python39\lib\site.py", line 169, in addpackage
exec(line)
File "", line 1, in
File "", line 18, in
FileNotFoundError: .load-order-saxonche-12.1.0 not found

Remainder of file ignored
SaxonC-HE 12.1 from Saxonica

Unfortunately, I’m no closer to having a clue what it means. :-(

Be seeing you,
norm

--
Norm Tovey-Walsh
Saxonica

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 #4

Updated by Norm Tovey-Walsh about 1 year ago

  • Subject changed from strange error with he 12.1 under Windows when using PyPi package in venv: Error processing line 1 of C:\Users\marti\ProjectPath\venv\lib\site-packages\_preload_saxonche_12.1.0.pth: FileNotFoundError: .load-order-saxonche-12.1.0 not found to SaxonC doesn't work in a virtual environment on Windows
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 #5

Updated by Norm Tovey-Walsh about 1 year ago

  • Subject changed from SaxonC doesn't work in a virtual environment on Windows to SaxonC Python wheels don't work in a virtual environment on Windows
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 #6

Updated by Norm Tovey-Walsh about 1 year ago

  • Status changed from New to Resolved

This appears to have been caused by an unpinned reference to the delvewheel process which was upgraded after our last release. The new versions attempt to deal with delayed loading of DLLs by adding this '.pth' file but that clearly breaks virtual environments.

I've pinned the version of delvewheel to 1.2.0 and that seems to have resolved the problem.

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 #7

Updated by O'Neil Delpratt 12 months ago

  • Status changed from Resolved to Closed
  • % Done changed from 0 to 100
  • Fixed in version set to 12.2

Bug fix applied in the SaxonC 12.2 maintenance release.

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