![]() Fixes #9531
## Context
While working with [uv](https://github.com/astral-sh/uv), I encountered
issues with a python dependency, [httpx](https://www.python-httpx.org/)
unable to be installed because of a **os error 5 permission denied**.
The error occur when we try to persist a **.exe file** from a temporary
folder into a persistent one.
I only reproduce the issue in an enterprise **Windows** Jenkins Runner.
In my virtual machines, I don't have any issues. So I think this is most
probably coming from the system configuration. This windows runner
**contains an AV/EDR**. And the fact that the file locked occured only
once for an executable make me think that it's most probably the cause.
While doing some research and speaking with some colleagues (hi
@vmeurisse), it seems that the issue is a very recurrent one on Windows.
In the Javascript ecosystem, there is this package, created by the
@isaacs, `npm` inventor: https://www.npmjs.com/package/graceful-fs, used
inside `npm`, allowing its package installations to be more resilient to
filesystem errors:
> The improvements are meant to normalize behavior across different
platforms and environments, and to make filesystem access more resilient
to errors.
One of its core feature is this one:
> On Windows, it retries renaming a file for up to one second if EACCESS
or EPERM error occurs, likely because antivirus software has locked the
directory.
So I tried to implement the same algorithm on `uv`, **and it fixed my
issue**! I can finally install `httpx`.
Then, [as I mentionned in this
issue](https://github.com/astral-sh/uv/issues/9531#issuecomment-2508981316),
I saw that you already implemented exactly the same algorithm in an
asynchronous function for renames 😄
|
||
---|---|---|
.. | ||
uv | ||
uv-auth | ||
uv-bench | ||
uv-build-backend | ||
uv-build-frontend | ||
uv-cache | ||
uv-cache-info | ||
uv-cache-key | ||
uv-cli | ||
uv-client | ||
uv-configuration | ||
uv-console | ||
uv-dev | ||
uv-dirs | ||
uv-dispatch | ||
uv-distribution | ||
uv-distribution-filename | ||
uv-distribution-types | ||
uv-extract | ||
uv-fs | ||
uv-git | ||
uv-globfilter | ||
uv-install-wheel | ||
uv-installer | ||
uv-macros | ||
uv-metadata | ||
uv-normalize | ||
uv-once-map | ||
uv-options-metadata | ||
uv-pep440 | ||
uv-pep508 | ||
uv-performance-flate2-backend | ||
uv-performance-memory-allocator | ||
uv-platform-tags | ||
uv-publish | ||
uv-pypi-types | ||
uv-python | ||
uv-requirements | ||
uv-requirements-txt | ||
uv-resolver | ||
uv-scripts | ||
uv-settings | ||
uv-shell | ||
uv-state | ||
uv-static | ||
uv-tool | ||
uv-trampoline | ||
uv-trampoline-builder | ||
uv-types | ||
uv-version | ||
uv-virtualenv | ||
uv-warnings | ||
uv-workspace | ||
README.md |
Crates
uv-bench
Functionality for benchmarking uv.
uv-cache-key
Generic functionality for caching paths, URLs, and other resources across platforms.
uv-distribution-filename
Parse built distribution (wheel) and source distribution (sdist) filenames to extract structured metadata.
uv-distribution-types
Abstractions for representing built distributions (wheels) and source distributions (sdists), and the sources from which they can be downloaded.
uv-install-wheel-rs
Install built distributions (wheels) into a virtual environment.
uv-once-map
A waitmap
-like concurrent hash map for executing tasks
exactly once.
uv-pep440-rs
Utilities for interacting with Python version numbers and specifiers.
uv-pep508-rs
Utilities for parsing and evaluating dependency specifiers, previously known as PEP 508.
uv-platform-tags
Functionality for parsing and inferring Python platform tags as per PEP 425.
uv-cli
Command-line interface for the uv package manager.
uv-build-frontend
A PEP 517-compatible build frontend for uv.
uv-cache
Functionality for caching Python packages and associated metadata.
uv-client
Client for interacting with PyPI-compatible HTTP APIs.
uv-dev
Development utilities for uv.
uv-dispatch
A centralized struct
for resolving and building source distributions in isolated environments.
Implements the traits defined in uv-types
.
uv-distribution
Client for interacting with built distributions (wheels) and source distributions (sdists). Capable of fetching metadata, distribution contents, etc.
uv-extract
Utilities for extracting files from archives.
uv-fs
Utilities for interacting with the filesystem.
uv-git
Functionality for interacting with Git repositories.
uv-installer
Functionality for installing Python packages into a virtual environment.
uv-python
Functionality for detecting and leveraging the current Python interpreter.
uv-normalize
Normalize package and extra names as per Python specifications.
uv-requirements
Utilities for reading package requirements from pyproject.toml
and requirements.txt
files.
uv-resolver
Functionality for resolving Python packages and their dependencies.
uv-shell
Utilities for detecting and manipulating shell environments.
uv-types
Shared traits for uv, to avoid circular dependencies.
uv-pypi-types
General-purpose type definitions for types used in PyPI-compatible APIs.
uv-virtualenv
A venv
replacement to create virtual environments in Rust.
uv-warnings
User-facing warnings for uv.
uv-workspace
Workspace abstractions for uv.
uv-requirements-txt
Functionality for parsing requirements.txt
files.