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Python: Fix issue related to Pyenchant with executing linters on Apple Silicons #4818

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Python: Fix issue related to Pyenchant with executing linters on Appl…
dhruv-pratap May 19, 2022
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Python: Remove whitespaces in export statement.
dhruv-pratap May 19, 2022
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Python: Update python/README.md
dhruv-pratap May 19, 2022
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Python: Adding snippet to set PYENCHANT_LIBRARY_PATH in ~/.zshrc.
dhruv-pratap May 19, 2022
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19 changes: 19 additions & 0 deletions python/README.md
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Expand Up @@ -52,5 +52,24 @@ Once all three versions are installed, you can set an application-specific pyenv
pyenv local 3.7.12 3.8.12 3.9.10
```

## Pyenchant linter errors on Apple Silicons

If you are using an M1 Mac to run tox, there is currently [an issue with pyenchant](https://github.com/pyenchant/pyenchant/issues/265) that you would run into while running `linters`.
This happens because python distributions installed by `pyenv` are in the default M1 architecture (aarch64), and can't find a compatible enchant library.
As a workaround, you can follow the steps below:

Install enchant with Homebrew
```shell
brew install enchant
```
Set environment variable `PYENCHANT_LIBRARY_PATH` to point to the installed enchant library before running `tox`.
```shell
export PYENCHANT_LIBRARY_PATH=/opt/homebrew/lib/libenchant-2.dylib
```
You can set this environment variable in your `~/.zshrc` or in your IDE to avoid doing it everytime.
```shell
echo 'export PYENCHANT_LIBRARY_PATH="/opt/homebrew/lib/libenchant-2.dylib"' >> ~/.zshrc
```

## Get in Touch
- [Iceberg community](https://iceberg.apache.org/community/)
4 changes: 4 additions & 0 deletions python/tox.ini
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Expand Up @@ -32,6 +32,10 @@ deps =
setenv =
COVERAGE_FILE = test-reports/{envname}/.coverage
PYTEST_ADDOPTS = --junitxml=test-reports/{envname}/junit.xml -vv
passenv =
# Workaround for pyenchant on Apple Silicons
# Ref: https://github.com/pyenchant/pyenchant/issues/265
PYENCHANT_LIBRARY_PATH
commands =
coverage run --source src --parallel-mode -m pytest {posargs}
coverage combine
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