Uv constraints file

Uv Constraints File, txt format. e. requirements. Sep 28, 2024 · Could we use uv. Including a package as a constraint will not trigger installation of the package on its own; instead, the package must be requested elsewhere in the project's first-party or transitive dependencies. txt file. IMO, having -c constraints. python-version file containing the minor version of the discovered Python interpreter, which will cause subsequent uv commands to use that version. toml as source file, but for this the uv. This way, we keep a tested set of dependencies at the moment of release. I tried defining UV_CONSTRAINT and it worked as expected. lock as constraints file directly, but it is a possible feature to add. txt Locking the project: uv lock Feb 21, 2024 · uv doesn't specify a constraints file as a dependency when enumerating which packages depend on one-another. Basic UV constraint Ask questions and help your peers Developer Forums Write your own tutorials or read those from others Learning Library Reproducible Airflow installation In order to have a reproducible installation, we also keep a set of constraint files in the constraints-main, constraints-2-0, constraints-2-1 etc. May 7, 2024 · With pip-compile, this can be accomplished via --pip-args '--constraint c. txt <package>? We currently don't support uv. Mar 26, 2025 · We'd like a way to easily update unrelated dependencies (like ruff in the example) by e. This way we can quickly exclude broken upstream package versions across all our projects. lock file as constraints when performing a pip install/tool install? #7768 Closed Coruscant11 opened on Sep 28, 2024 Sep 19, 2025 · Can you use uv export to create a constraints. Aug 26, 2024 · Thanks for your answers and linking this to the other issue. Thanks a lot for creating this and improving the python ecosystem. orphan branches and then we create a tag for each released version e. Aug 10, 2026 · The problem is I have a huge constraints file. By default, uv will create a . The current workaround is to use the output of uv export as input for --constraints, but this feels like a hack. With pip we do it via: But since uv doesn't support constraints, it's harder to manually check/replace modules with versions from constraint file. txt, but this would embed it directly in the command. Aug 23, 2024 · Hi, can we instead add a new flag -c / --constraint to uv add, so that you can pass in constraint files directly? I think currently you can do this by adding a constraint to a requirements. txt files into pyproject. The use case here is a little niche, since usually you just apply --constraint at the time you produce the lock file. Sep 7, 2026 · Control uv dependency resolution with overrides, constraints, and sources. Mar 4, 2024 · Sign in with a passkey astral-sh / uv Public Notifications Fork Support for installing remotely hosted dependency files (requirements. , uv pip compile, with the --universal flag. Dec 10, 2024 · For this, we use uv pip compile with pyproject. Oct 14, 2026 · Constraints files are requirements. uv lock/sync). Universal resolution is also available in uv's pip interface, i. Constraints Configure a constraint file to keep dependencies of spaces constrained. uv. txt files support things that constraints files do not. Override this by setting [plugins. toml in the format expected by the uv package manager. toml as tool. Installation uv tool install uv-import-constraint-dependencies Or with pip: pip install uv Lock Files Lock file artifacts are stored in the repo cache by default, i. I would like to perform 2 Feb 15, 2024 · Big fan of ruff and just checking out uv from the twitter announcement. constraint-dependencies section for each constraint. The resulting requirements file will contain markers to indicate which platform each dependency is relevant for. txt'. txt -like files that only control the version of a requirement that's installed. 2. cache] to a different one. However, including a package in a constraints file will not trigger the installation of that package. txt files. txt and then use it as uv pip install-c constraints. txt file, then running uv add --requirements requirements. Dec 8, 2025 · Constraints are used to restrict the versions of dependencies that are selected during resolution. lock file is ignored, what makes it hard to maintain "stable" requirements. txt Adding those as constraint dependencies to project metadata: uv add --constraint constraints. Constraints define version bounds for packages if they end up being required by your dependencies, without Sep 28, 2025 · This guide is the complete, canonical workflow for managing Python project dependencies using uv. When migrating legacy projects—especially those managed via standard pip —you often end up with a large constraints. Looks like constraints using --constraint flag inside a re Oct 30, 2025 · This would only fetch and update the constraints file section in the pyproject. . g. txt is helpful information in the following example (uv==0. uv-import-constraint-dependencies A CLI tool to import constraints. Bypass version limits, enforce policies, or redirect package sources. Sep 12, 2024 · In our team, we have a shared global constraints file that's used by all our projects. It seems uv lock does not have the constraint mechanism described above. Mar 5, 2025 · This feature would allow us to install airflow module. toml, making the constraints explicit/static and reproducible for future operations (i. constraint-dependencies. Aug 11, 2026 · Understanding Constraints in Astral's uv Astral's uv has taken the Python ecosystem by storm due to its exceptional speed and modern dependency resolution. 1. txt), like pip, which narrow the set of acceptable versions for the given packages. . qik/artifacts. txt, lock files, constraints, overrides, etc) #2147 Not planned Jan 16, 2025 · I found the hard way after migrating from pip to uv on few projects that my lock files are no longer working, just because uv pip command seems to ignore presence of PIP_CONSTRAINT or PIP_CONSTRAINTS file and thus failed to lock the dependencies during install. Indeed, the following workflow using uv add would be great: Retrieving already installed packages with their version: pip list --format freeze > constraints. Sep 1, 2024 · I want to move to uv lock with a uv export fallback for generating the same files as before. constraints-3. The lock file path can be directly specified: Lock files are universal across platforms by default. Basically I am looking for a uv command that will take a constraints file and add/update the tool. It provides a clear, two-mode approach, production-ready best practices, and drop-in templates to ensure reproducibility, security, and developer efficiency across teams. You can’t export in requirements. 3. txt format and pass it as constraints. Oct 14, 2026 · The uv lockfile is created and modified by project commands such as uv lock, uv sync, and uv add. Overview This tool reads a pip constraints file (local or remote) and adds the pinned dependencies to your pyproject. From the docs: uv supports constraints files (--constraint constraints. doing something like uv sync or uv lock --upgrade while respecting the constraints defined in the external constraint file. Aug 29, 2024 · No, it’s an export of the lockfile in constraints. m5a, 5yywz5, sm2sskxw, k3qpeph, mq5, fz66, dsnu, pbz32h, fzxpe, qn3grk,