ErrLookup › astral-sh/uv

astral-sh/uv

An extremely fast Python package and project manager, written in Rust. · Rust · 585 source files

Analyzed at f1a42680ff on 2026-08-16. 147 documented errors.

Code / Message	Type	Severity	Tags
{uv_bin_name} was not properly installed	exception	error	build-backend, pep-517, packaging, environment, path
You must use import runpy; runpy.run_path(this_file)	exception	error	virtualenv, activation, runpy, python, embedding
Using `uv.{attr_name}` is not allowed; build backend functio	exception	error	build-backend, pep-517, packaging, migration, attributeerror
Could not find the uv binary in any of the following locatio	exception	error	packaging, pypi, binary, environment, filenotfound
pip-compile's `--reuse-hashes` is unsupported (uv doesn't re	validation	error	cli, pip-tools, compatibility, compile
pip-compile's `--resolver=legacy` is unsupported (uv always	validation	error	cli, pip-tools, compatibility, resolver, compile
pip-compile's `--max-rounds` is unsupported (uv always resol	validation	error	cli, pip-tools, compatibility, resolver, compile
pip-compile's `--client-cert` is unsupported (uv doesn't sup	validation	error	cli, pip-tools, compatibility, mtls, network, compile
pip-compile's `--emit-trusted-host` is unsupported	validation	error	cli, pip-tools, compatibility, tls, compile
pip-compile's `--config` is unsupported (uv does not use a c	validation	error	cli, pip-tools, compatibility, configuration, compile
pip-compile's `--emit-options` is unsupported (try `--emit-b	validation	error	cli, pip-tools, compatibility, compile, requirements
pip-compile's `--pip-args` is unsupported (try passing argum	validation	error	cli, pip-tools, compatibility, compile, arguments
pip-sync's `--ask` is unsupported (uv never asks for confirm	validation	error	cli, pip-tools, compatibility, sync, confirmation
pip-sync's `--python-executable` is unsupported (to install	validation	error	cli, pip-tools, compatibility, sync, virtualenv
pip-sync's `--user` is unsupported (use a virtual environmen	validation	error	cli, pip-tools, compatibility, sync, virtualenv, user-site
pip-sync's `--client-cert` is unsupported (uv doesn't suppor	validation	error	cli, pip-tools, compatibility, sync, mtls, network
pip-sync's `--config` is unsupported (uv does not use a conf	validation	error	cli, pip-tools, compatibility, sync, configuration
pip-sync's `--pip-args` is unsupported (try passing argument	validation	error	cli, pip-tools, compatibility, sync, arguments
pip's `--user` is unsupported (use a virtual environment ins	validation	error	cli, pip, compatibility, virtualenv, user-site
Extra names must start and end with a letter or digit and ma	validation	error	cli, validation, extras, packaging, arguments
Could not find an index named `{name}`	validation	error
Request object is not cloneable. Are you passing a streaming	http	error
Server returned redirect (HTTP {status}) without destination	http	error
Invalid HTTP {status} 'Location' value: must only contain vi	http	error
Invalid HTTP {status} 'Location' value `{location}` relative	http	error
Invalid HTTP {status} 'Location' value `{location}`: {err}	http	error
HTTP {status} 'Location' value `{redirect_url}` is not a val	http	error
Invalid HTTP {status} 'Location' value `{redirect_url}`: sch	http	error
Symlink-based installation is not supported with `--no-cache	validation	error
`install_blocking` task panicked	exception	error
Failed to clear registry entries under HKCU:\{python_entry}:	exception	error
The file `{}` appears to be a `pyproject.toml`, `setup.py`,	validation	error
Failed to convert path to URL	exception	error
Hash-checking is not supported for local directories: {}	validation	error
`{}` is not a valid PEP 751 filename: expected `pylock.toml`	validation	error
The file `{}` appears to be a `{}` file, but requirements mu	validation	error
The file `{}` appears to be a `pylock.toml` file, but requir	validation	error
The file `{}` appears to be a TOML file, but requirements mu	validation	error
The file `{}` appears to be a `{}` file, but constraints mus	validation	error
The file `{}` appears to be a `pylock.toml` file, but constr	validation	error	uv, constraints, pylock-toml, file-format, pip-interface
The file `{}` appears to be a TOML file, but constraints mus	validation	error	uv, constraints, toml, file-format, pip-interface
The file `{}` appears to be a `{}` file, but overrides must	validation	error	uv, overrides, pyproject-toml, file-format, pip-interface
The file `{}` appears to be a `pylock.toml` file, but overri	validation	error	uv, overrides, pylock-toml, file-format, pip-interface
The file `{}` appears to be a TOML file, but overrides must	validation	error	uv, overrides, toml, file-format, pip-interface
File not found: `{}`	validation	error	uv, requirements-file, file-not-found, path, pip-interface
Failed to read `{}`: {}	exception	error	uv, pyproject-toml, io, permissions, pip-interface
`{}` does not contain inline script metadata	validation	error	uv, pep723, inline-script-metadata, uv-run, file-format
Conda environment files (i.e., `{}`) are not supported	validation	error	uv, conda, environment-yml, unsupported-format, pip-interface
Cannot use `{}` as a constraint file	validation	error	uv, constraints, pylock-toml, api-misuse
Cannot use `{}` as an override file	validation	error	uv, overrides, pylock-toml, api-misuse
Cannot use `{}` as an exclude file	validation	error	uv, excludes, pylock-toml, api-misuse
Cannot specify additional requirements alongside a `pylock.t	validation	error	uv, pylock-toml, requirements, api-misuse, pip-interface
Cannot specify constraints with a `pylock.toml` file	validation	error	uv, pylock-toml, constraints, api-misuse, pip-interface
Cannot specify overrides with a `pylock.toml` file	validation	error	uv, pylock-toml, overrides, api-misuse, pip-interface
Cannot specify paths for groups with a `pylock.toml` file; a	validation	error	uv, pylock-toml, dependency-groups, api-misuse, pip-interface
Multiple `pylock.toml` files specified: `{}` vs. `{}`	validation	error	pylock, requirements, configuration, merge
Multiple index URLs specified: `{existing}` vs. `{index_url}	validation	error	index, requirements, configuration, merge
Unnamed requirements are not allowed as constraints (found:	validation	error	constraints, requirements, validation
Unnamed requirements are not allowed as exclusions (found: `	validation	error	exclusions, requirements, validation
Failed to login with code `{status}`	exception	error	auth, login, network, http-status
Login session timed out after {STATUS_RETRY_LIMIT} seconds	exception	error	auth, login, timeout, headless
Failed to fetch credentials for {display_url}	exception	error	auth, keyring, credentials, token
Source `{}` does not exist	validation	error	build, filesystem, path
Cannot specify `--package` when building from a file	validation	error	build, cli-usage, package-selection
Package `{package}` not found in workspace	validation	error	build, workspace, package-selection
Package `{}` is missing a `{}`. For example, to build with `	validation	error	build, build-system, pyproject, package-selection
Cannot specify `--all-packages` when building from a file	validation	error	build, cli-usage, package-selection
No packages found in workspace	validation	error	build, workspace, configuration
Workspace does not contain any buildable packages. For examp	validation	error	build, build-system, workspace
Pass `--wheel` explicitly to build a wheel from a source dis	validation	error	build, sdist, wheel, cli-usage
Building an `--sdist` from a source distribution is not supp	validation	error	build, sdist, cli-usage
There is no command {}. Did you mean one of: {}	validation	warning	help, cli-usage, clap
Failed to take child process stdin	exception	error
`pyproject.toml` is not a supported output format for `{}` (	validation	error
Expected the output filename to be `pylock.toml` or `pylock.	validation	error
Requesting extras requires a `pyproject.toml`, `setup.cfg`,	validation	error
`pylock.toml` is not a supported input format for `uv pip co	validation	error
Requested extra{s} not found: {}	validation	error
`--outdated` cannot be used with `--format freeze`	validation	error
Requested extra{s} not found: {}	validation	error
The dependency group '{name}' was not found in the project:	validation	error
Invalid installed distribution path: `{}`	validation	error
The interpreter at {} is externally managed, and indicates t	exception	error
The interpreter at {} is externally managed. Instead, create	exception	error
The interpreter at {} is externally managed, and indicates t	exception	error
The interpreter at {} is externally managed. Instead, create	console	error
Invalid file path in index URL: {url}	validation	error
Package `{name}` not found in workspace	console	error
Failed to query ty version	console	error
Package `{name}` not found in workspace	console	error
`pyproject.toml` is not a supported output format for `{}` (	console	error
Expected the output filename to be `pylock.toml` or `pylock.	validation	error
Failed to query Ruff version	console	error
Script initialization requires a file path	validation	error
Project is already initialized in `{}` (`pyproject.toml` fil	console	error
The {directory_description} (`{directory_name}`) is not a va	validation	error
`{}` is already a PEP 723 script; use `{}` to execute it	console	error
`git` not found in PATH	console	error
No author information found	console	error
Requirements environment has no site packages directory	console	error
Base environment has no site packages directory	console	error
Cannot run a Python module from stdin	console	error
Invalid Gist URL format	validation	error
No files found in the Gist	console	error
Package `{name}` not found in workspace	console	error
`uv sync --frozen` requires a script lockfile; run `{}` to l	console	error
`uv sync {lock_check}` requires a script lockfile; run `{}`	console	error
Project root is not a valid file URL	console	error
Failed to parse dependency from {table_name} in `{}`: {messa	validation	error
Missing `project.name` field in: {}	console	error
We cannot get or set dynamic project versions in: {}	console	error
There is no 'project.version' field in: {}	console	error
{err}: {}	console	error
Invalid version `{value}`, did you mean to pass `--bump {val	validation	error
`--bump stable` cannot be used with another `--bump` value,	validation	error
`--bump post` cannot be used with another `--bump` value, go	validation	error
Only one release version component can be provided to `--bum	validation	error
Only one pre-release version component can be provided to `-	validation	error
{old_version} => {new_version} didn't increase the version;	validation	error
{old_version} => {new_version} didn't increase the version;	validation	error
{old_version} => {new_version} didn't increase the version;	validation	error
Failed to find the {name}'s version in the frozen lockfile	console	error
The requested interpreter resolved to Python {}, which is in	exception	error
`{}` is not a valid Python download request; see `uv help py	exception	error
uv does not yet provide musl Python distributions on armv7.	exception	error
The `--default` flag cannot be used with multiple targets	exception	error
Executable already exists at `{}` but could not be removed:	exception	error
Failed to create link at `{}`: {err}	exception	error
Executable already exists at `{}` but is not managed by uv;	exception	error
Executables {} already exist in `{}` but are not managed by	exception	error
The {given} Python version `{}`{resolved} is incompatible wi	exception	error
Cannot uninstall managed Python for request: {request}	exception	error
Failed to remove symlink directory {}	exception	error
Failed to parse version specifier `{target_version}`: explic	exception	error
Failed to locate the standalone install receipt for `{app_na	exception	error
No tool command provided	exception	error
Tool command could not be parsed as UTF-8 string. Use `--fro	exception	error
Received multiple Python version requests: `{}` and `{}`	exception	error
`{}` is not installed; run `{}` to install	exception	error
`{}` is missing a valid receipt; run `{}` to reinstall	exception	error
`{}` is missing a valid environment; run `{}` to reinstall	exception	error
The executable directory {} is not in PATH, but the current	exception	error
The executable directory {} is not in PATH, but updating {sh	exception	error
The executable directory {} is not in PATH, but the necessar	exception	error
The executable directory {} is not in PATH, but the {shell}	exception	error
pip's `debug` is unsupported (consider using `uvx pip debug`	exception	error
Required uv version `{required_version}` does not match the	exception	error