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Add environment variable for --link-mode #3313

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davidfritzsche opened this issue Apr 29, 2024 · 1 comment · Fixed by #3315
Closed

Add environment variable for --link-mode #3313

davidfritzsche opened this issue Apr 29, 2024 · 1 comment · Fixed by #3315
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configuration Settings and such good first issue Good for newcomers

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@davidfritzsche
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Hello,

thanks for you work on uv!

The outout of uv pip install --help (uv version 0.1.139) does not offer an environment variable for --link-mode. As I'm commonly editing installed Python packages (to debug something), it would be of great help if I could set the default link mode to clone instead of hardlink (I'm mostly working on Linux).

In general, from the documentation it is not really clear why the OS-specific defaults were chosen (probably performance?) and how uv protects itself against stupid old-school developers like me when they accidentially modify cached files installed with link mode hardlink.

PS: At $WORK my Windows-using colleagues are very much looking forward to use uv to speed up the creation of tox venvs to not take several minutes anymore. 🥇 for the astral team and all the contributors!
@zanieb zanieb added the configuration Settings and such label Apr 29, 2024
@zanieb
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zanieb commented Apr 29, 2024

Thanks for the kind words!

This seems reasonable to add.

@zanieb zanieb added the good first issue Good for newcomers label Apr 29, 2024
@blueraft blueraft mentioned this issue Apr 29, 2024
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zanieb pushed a commit that referenced this issue Apr 29, 2024
@blueraft
add UV_LINK_MODE as env variable (#3315)
a3b61a2 
Resolves #3313

## Summary

Add a new env variable `UV_LINK_MODE` as alias for the cli argument
--link-mode.
Updated the README env variables section.

## Test Plan

Tested manually using `UV_LINK_MODE=hardlink cargo run -p uv pip install
flask`.
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add UV_LINK_MODE as env variable
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@zanieb @davidfritzsche