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https://issues.apache.org/jira/browse/ARROW-15482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17483513#comment-17483513
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Kouhei Sutou commented on ARROW-15482:
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We can use {{ARROW_XXX_SOURCE_URL}} environment variable to use other URL of
the same version. We can't use it for different version.
We can unset {{ARROW_XXX_BUILD_SHA256_CHECKSUM}} when {{ARROW_XXX_SOURCE_URL}}
environment variable is used to skip checksum verification. Or we can accept
{{ARROW_XXX_BUILD_SHA256_CHECKSUM}} environment variable too.
Improving C+ dependency manager integration is a good idea but we can't replace
the thirdparty toolchain with it. Because we can't support offline build with
C++ dependency manager.
> [C++] User-supplied thirdparty versions
> ---------------------------------------
>
> Key: ARROW-15482
> URL: https://issues.apache.org/jira/browse/ARROW-15482
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Krisztian Szucs
> Priority: Major
> Fix For: 8.0.0
>
>
> For older systems it would be helpful to allow folks to specify
> versions/hashes to be used
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