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Fix link-mode=clone on linux #7620

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merged 2 commits into from
Sep 22, 2024
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aroig
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@aroig aroig commented Sep 22, 2024

  • Do not attempt to reflink directories on linux
  • Refactor clone_recursive

Summary

On linux, reflink does not work on a directory. Currently, we first attempt to reflink directory, and only if it fails with AlreadyExists we attempt to reflink recursively.

This has the effect that, on linux, uv pip install --link-mode=clone would always fall back to copy.

We resolve this by only attempting to reflink directories on macos. In the process, we refactored clone_recursive in an attempt to make it easier to reason about its logic.

Test Plan

I tested that after this change, uv pip install --link-mode=clone numpy would behave as expected in the following cases:

  • linux, btrfs filesystem, venv on the same filesystem as cache (correctly reflinked)
  • linux, btrfs filesystem, venv on a different filesystem than cache (fallback to copy)

I have not tested it on macos or windows, as I currently don't have access to any macos or windows machines, unfortunately.

FICLONE would return EISDIR if the source is a directory. We resolve it
by extending the cases in which we fall back to recursing into the
directory.
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aroig commented Sep 22, 2024

I pushed a couple of extra commits to make the linter happy, and close a gap for a race condition I missed initially, and caused a CI failure on macos.

This is ready for review.

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Oh smart, thank you. Will review. I’ll admit I’ve never actually tested this on btrfs.

@charliermarsh charliermarsh self-assigned this Sep 22, 2024
@charliermarsh charliermarsh added the bug Something isn't working label Sep 22, 2024
clone_recursive(site_packages, wheel, locks, &entry?, attempt)?;
}
return Ok(());
}
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Why would it not be sufficient to extend this to Linux?

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It is. This is the first commit in the PR, actually.

I then tried to decouple a bit this code for the next person who needs to touch it. I found it a bit difficult to reason about because it was handling 2 separate fallback logic, plus the windows and linux special case in clone_recursive.

I do think this makes it easier to follow, but I understand this is somewhat subjective. If you prefer, I can stick with the minimal change that fixes the bug.

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While I definitely appreciate the intent, I would prefer to use the minimal change, since this function is so critical and making large changes to it requires extensive testing.

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Ok. I updated the branch with a minimal change to fix the bug.

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Thanks. This I can easily and confidently merge.

@charliermarsh charliermarsh merged commit 542afe7 into astral-sh:main Sep 22, 2024
58 checks passed
tmeijn pushed a commit to tmeijn/dotfiles that referenced this pull request Oct 7, 2024
This MR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [astral-sh/uv](https://github.com/astral-sh/uv) | patch | `0.4.15` -> `0.4.18` |

MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot).

**Proposed changes to behavior should be submitted there as MRs.**

---

### Release Notes

<details>
<summary>astral-sh/uv (astral-sh/uv)</summary>

### [`v0.4.18`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0418)

[Compare Source](astral-sh/uv@0.4.17...0.4.18)

##### Enhancements

-   Allow multiple source entries for each package in `tool.uv.sources` ([#&#8203;7745](astral-sh/uv#7745))
-   Add `.gitignore` file to `uv build` output directory ([#&#8203;7835](astral-sh/uv#7835))
-   Disable jemalloc on FreeBSD ([#&#8203;7780](astral-sh/uv#7780))
-   Respect `PAGER` env var when paging in `uv help` command ([#&#8203;5511](astral-sh/uv#5511))
-   Support `uv run -m foo` to run a module ([#&#8203;7754](astral-sh/uv#7754))
-   Use a top-level output directory for `uv build` in workspaces ([#&#8203;7813](astral-sh/uv#7813))
-   Update `uv init --package` command to match project name ([#&#8203;7670](astral-sh/uv#7670))
-   Add a custom suggestion for `uv add dotenv` ([#&#8203;7799](astral-sh/uv#7799))
-   Add detailed errors for `tool.uv.sources` deserialization failures ([#&#8203;7823](astral-sh/uv#7823))
-   Improve error message copy for failed builds ([#&#8203;7849](astral-sh/uv#7849))
-   Use `serde-untagged` to improve some untagged enum error messages ([#&#8203;7822](astral-sh/uv#7822))
-   Use build failure hints for `dotenv` errors, rather than in `uv add` ([#&#8203;7825](astral-sh/uv#7825))

##### Configuration

-   Add `UV_NO_SYNC` environment variable ([#&#8203;7752](astral-sh/uv#7752))

##### Bug fixes

-   Accept `git+` prefix in `tool.uv.sources` ([#&#8203;7847](astral-sh/uv#7847))
-   Allow spaces in path requirements ([#&#8203;7767](astral-sh/uv#7767))
-   Avoid reusing cached downloaded binaries with `--no-binary` ([#&#8203;7772](astral-sh/uv#7772))
-   Correctly trims values during wheel WHEEL file parsing ([#&#8203;7770](astral-sh/uv#7770))
-   Fix `uv tree --invert` for platform dependencies ([#&#8203;7808](astral-sh/uv#7808))
-   Fix encoding mismatch between python child process and uv ([#&#8203;7757](astral-sh/uv#7757))
-   Reject self-dependencies in `uv add` ([#&#8203;7766](astral-sh/uv#7766))
-   Respect `tool.uv.environments` for legacy virtual workspace roots ([#&#8203;7824](astral-sh/uv#7824))
-   Retain empty extras on workspace members ([#&#8203;7762](astral-sh/uv#7762))
-   Use file stem when parsing cached wheel names ([#&#8203;7773](astral-sh/uv#7773))

##### Rust API

-   Make `FlatDistributions` public ([#&#8203;7833](astral-sh/uv#7833))

##### Documentation

-   Fix table of contents sizing ([#&#8203;7751](astral-sh/uv#7751))
-   GitLab Integration documentation ([#&#8203;6857](astral-sh/uv#6857))
-   Update documentation to setup-uv@v3 ([#&#8203;7807](astral-sh/uv#7807))
-   Use `uv publish` instead of twine in docs ([#&#8203;7837](astral-sh/uv#7837))
-   Fix typo in `projects.md` ([#&#8203;7784](astral-sh/uv#7784))

### [`v0.4.17`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0417)

[Compare Source](astral-sh/uv@0.4.16...0.4.17)

##### Enhancements

-   Add `uv build --all` to build all packages in a workspace ([#&#8203;7724](astral-sh/uv#7724))
-   Add support for `uv init --script` ([#&#8203;7565](astral-sh/uv#7565))
-   Add support for upgrading build environment for installed tools (`uv tool upgrade --python`) ([#&#8203;7605](astral-sh/uv#7605))
-   Initialize a Git repository in `uv init` ([#&#8203;5476](astral-sh/uv#5476))
-   Respect `--quiet` flag in `uv build` ([#&#8203;7674](astral-sh/uv#7674))
-   Add context message before listing available tools in `uvx` ([#&#8203;7641](astral-sh/uv#7641))

##### Bug fixes

-   Don't create Python bytecode files during interpreter discovery ([#&#8203;7707](astral-sh/uv#7707))
-   Escape glob patterns in workspace member discovery ([#&#8203;7709](astral-sh/uv#7709))
-   Avoid prefetching source distributions with unbounded lower-bound ranges ([#&#8203;7683](astral-sh/uv#7683))

##### Documentation

-   Add `uv build` and `uv publish` to features overview ([#&#8203;7716](astral-sh/uv#7716))
-   Add documentation on cache versioning ([#&#8203;7693](astral-sh/uv#7693))
-   Spell out the names of the Docker images for easier copy-paste ([#&#8203;7706](astral-sh/uv#7706))
-   Document uv-with-Jupyter workflows ([#&#8203;7625](astral-sh/uv#7625))
-   Note that `uv lock --upgrade-package` retains locked versions ([#&#8203;7694](astral-sh/uv#7694))

### [`v0.4.16`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0416)

[Compare Source](astral-sh/uv@0.4.15...0.4.16)

##### Enhancements

-   Add `uv publish` ([#&#8203;7475](astral-sh/uv#7475))
-   Add a `--project` argument to run a command from a project directory ([#&#8203;7603](astral-sh/uv#7603))
-   Display Python implementation when creating environments ([#&#8203;7652](astral-sh/uv#7652))
-   Implement trusted publishing for `uv publish` ([#&#8203;7548](astral-sh/uv#7548))
-   Respect lockfile preferences for `--with` requirements ([#&#8203;7627](astral-sh/uv#7627))
-   Unhide the `--directory` option ([#&#8203;7653](astral-sh/uv#7653))
-   Allow requesting free-threaded Python interpreters ([#&#8203;7431](astral-sh/uv#7431))
-   Show a dedicated PubGrub hint for `--unsafe-best-match` ([#&#8203;7645](astral-sh/uv#7645))
-   Add resolver error checking for conflicting distributions ([#&#8203;7595](astral-sh/uv#7595))

##### Bug fixes

-   Avoid adding double-newlines for CRLF ([#&#8203;7640](astral-sh/uv#7640))
-   Avoid retaining forks when `requires-python` range changes ([#&#8203;7624](astral-sh/uv#7624))
-   Determine if pre-release Python downloads should be allowed using the version specifiers ([#&#8203;7638](astral-sh/uv#7638))
-   Fix `link-mode=clone` for directories on Linux ([#&#8203;7620](astral-sh/uv#7620))
-   Improve Python executable name discovery when using alternative implementations ([#&#8203;7649](astral-sh/uv#7649))
-   Require opt-in to use alternative Python implementations ([#&#8203;7650](astral-sh/uv#7650))
-   Use the first pre-release discovered when only pre-release Python versions are available ([#&#8203;7666](astral-sh/uv#7666))

##### Documentation

-   Document environment variable that disables printing of virtual environment name in prompt ([#&#8203;7648](astral-sh/uv#7648))
-   Remove double whitespaces from the code ([#&#8203;7623](astral-sh/uv#7623))
-   Use anchorlinks rather than permalinks ([#&#8203;7626](astral-sh/uv#7626))

##### Preview features

-   Add build backend scaffolding ([#&#8203;7662](astral-sh/uv#7662))

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this MR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this MR, check this box

---

This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy40NDAuNyIsInVwZGF0ZWRJblZlciI6IjM3LjQ0MC43IiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6WyJSZW5vdmF0ZSBCb3QiXX0=-->
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