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https://issues.apache.org/jira/browse/ARROW-17550?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kouhei Sutou updated ARROW-17550:
---------------------------------
    Description: 
MinGW builds currently compile the GCS testbench and grpcio for MinGW.
When the compiled MinGW wheel is not in cache, compiling takes a very long time 
(\*). But Win32 and Win64 binary wheels are available on PyPI.

This is pointless: the GCS testbench could simply run with the system Python 
instead of the msys2 Python, and always use the binaries from PyPI.

(\*) see for example https://github.com/pitrou/arrow/runs/8071607360 where 
installing the GCS testbench took 18 minutes


  was:
MinGW builds currently compile the GCS testbench and grpcio for MinGW.
When the compiled MinGW wheel is not in cache, compiling takes a very long time 
(*). But Win32 and Win64 binary wheels are available on PyPI.

This is pointless: the GCS testbench could simply run with the system Python 
instead of the msys2 Python, and always use the binaries from PyPI.

(*) see for example https://github.com/pitrou/arrow/runs/8071607360 where 
installing the GCS testbench took 18 minutes



> [C++][CI] MinGW builds shouldn't compile grpcio
> -----------------------------------------------
>
>                 Key: ARROW-17550
>                 URL: https://issues.apache.org/jira/browse/ARROW-17550
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++, Continuous Integration
>            Reporter: Antoine Pitrou
>            Assignee: Kouhei Sutou
>            Priority: Major
>             Fix For: 10.0.0
>
>
> MinGW builds currently compile the GCS testbench and grpcio for MinGW.
> When the compiled MinGW wheel is not in cache, compiling takes a very long 
> time (\*). But Win32 and Win64 binary wheels are available on PyPI.
> This is pointless: the GCS testbench could simply run with the system Python 
> instead of the msys2 Python, and always use the binaries from PyPI.
> (\*) see for example https://github.com/pitrou/arrow/runs/8071607360 where 
> installing the GCS testbench took 18 minutes



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