Part of #4454
e.g. for `uv help pip compile`
```
Python options:
--python <PYTHON>
The Python interpreter against which to compile the requirements.
By default, uv uses the virtual environment in the current working directory or any parent
directory, falling back to searching for a Python executable in `PATH`. The `--python`
option allows you to specify a different interpreter.
Supported formats:
- `3.10` looks for an installed Python 3.10 using `py --list-paths` on Windows, or
`python3.10` on Linux and macOS.
- `python3.10` or `python.exe` looks for a binary with the given name in `PATH`.
- `/home/ferris/.local/bin/python3.10` uses the exact Python at the given path.
-p, --python-version <PYTHON_VERSION>
The minimum Python version that should be supported by the resolved requirements (e.g., `3.8` or `3.8.17`).
If a patch version is omitted, the minimum patch version is assumed. For example, `3.8` is mapped to `3.8.0`.
--python-preference <PYTHON_PREFERENCE>
Whether to prefer using Python installations that are already present on the system, or those that are downloaded and installed by uv
Possible values:
- only-managed: Only use managed Python installations; never use system Python installations
- managed: Prefer managed Python installations over system Python installations
- system: Prefer system Python installations over managed Python installations
- only-system: Only use system Python installations; never use managed Python installations
--python-fetch <PYTHON_FETCH>
Whether to automatically download Python when required
Possible values:
- automatic: Automatically fetch managed Python installations when needed
- manual: Do not automatically fetch managed Python installations; require explicit installation
```
## Summary
In #5494, I made breaking changes to the tool receipt format. This would
break existing tools for all users. This PR makes the change
backwards-compatible by supporting deserialization for the deprecated
format.
Closes https://github.com/astral-sh/uv/issues/5680.
## Test Plan
Beyond the automated tests, you can run `cargo run tool list` on your
existing machine.
Before:
```
warning: `uv tool list` is experimental and may change without warning
warning: Ignoring malformed tool `black` (run `uv tool uninstall black` to remove)
warning: Ignoring malformed tool `poetry` (run `uv tool uninstall poetry` to remove)
warning: Ignoring malformed tool `ruff` (run `uv tool uninstall ruff` to remove)
```
After:
```
warning: `uv tool list` is experimental and may change without warning
black v0.1.0
- black
poetry v1.8.3
- poetry
ruff v0.0.60
- ruff
```
## Summary
When we add a new optional group in `uv add`, we never to update the
`pyproject.toml` before locking. Otherwise, we use the stale
`pyproject.toml` and omit the optional group.
Closes https://github.com/astral-sh/uv/issues/5687.
This `pyproject.toml`, translated from
0e4a1c3401/setup.py,
has found a number of bugs in blue jay, so i'm adding it to uv as a
development test case. (The file is too large to make it a test by
itself.)
## Summary
Fixes a bug in #5494. The `RequirementSourceWire` representation was
ambiguous, and so the order of the fields meant that all variants were
mapped to `Registry` when deserializing. (So the snapshots were right,
but behaviors were wrong.)
## Summary
This could still be made more robust, but it's not critical, since you
can always `--force`. It's good to handle this case, though, since we
have an explicit error for it.
Closes https://github.com/astral-sh/uv/issues/5490.
It transpires that detecting the directory a script was sourced from is
non-trivial across `bash`, `ksh` and `zsh`.
The previous version was a one-liner and supported `bash` and `zsh` but
not `ksh`.
It is possible to keep the one-liner and add `ksh` support, but that is
mutually-exclusive with `zsh`.
Therefore, the only way to square this circle is to add an `if` block. A
silver lining here is that although longer, the script is probably
easier to follow as there is less code-golfing going on.
## Summary
The current receipt doesn't capture quite enough information. For
example, it doesn't differentiate between editable and non-editable
requirements. This PR instead uses the full `Requirement` type. I think
we should use a custom representation like we do in the lockfile, but
I'm just using the default representation to demonstrate the idea.
## Summary
As-is, if you have a workspace with mixed `requires-python`
requirements, resolution will _never_ succeed, since we'll use the union
as the `requires-python` bound (i.e., take the lowest value), and fail
when we see the package that only supports some more narrow range.
This PR modifies the behavior to take the intersection (i.e., the
highest value), so if you have one package that supports Python 3.12 and
later, and another that supports Python 3.8 and later, we lock for
Python 3.12. If you try to sync or run with Python 3.8, we raise an
error, since the lockfile will be incompatible with that request.
Konsti has a write-up in https://github.com/astral-sh/uv/issues/5594
that outlines what could be a longer-term strategy.
Closes https://github.com/astral-sh/uv/issues/5578.
By resolving for each fork from the lockfile individually and by adding
using preferences for the current fork, we solve the instability #5180.
I've tested the locally and will add the packse test scenarios upstack.
Part of
https://github.com/astral-sh/uv/issues/5180#issuecomment-2247696198
Addressing some feedback about the first-steps covering the help and
version commands.
I'm not sure what else to do here since the first steps with uv are very
dependent on the features you need.
The comment in the code explains the bulk of this:
```rust
// We previously computed this heuristic freshness lifetime by
// looking at the difference between the last modified header and
// the response's date header. We then asserted that the cached
// response ought to be "fresh" for 10% of that interval.
//
// It turns out that this can result in very long freshness
// lifetimes[1] that lead to uv caching too aggressively.
//
// Since PyPI sets a max-age of 600 seconds and since we're
// principally just interacting with Python package indices here,
// we just assume a freshness lifetime equal to what PyPI has.
//
// Note though that a better solution here is for the index to
// support proper HTTP caching headers (ideally Cache-Control, but
// Expires also works too, as above).
```
We also remove the `heuristic_percent` field on `CacheConfig`. Since
that's actually part of the cache itself, we bump the simple cache
version.
Finally, we add some more `trace!` calls that should hopefully make
diagnosing issues related to the freshness lifetime a bit easier in the
future.
Fixes#5351
## Summary
Given a fork like:
```
pylint < 3 ; sys_platform == 'darwin'
pylint > 2 ; sys_platform != 'darwin'
```
Solving the top branch will typically yield a solution that also
satisfies the bottom branch, due to maximum version selection (while the
inverse isn't true).
To quote an example from the docs:
```rust
// If there's no difference, prioritize forks with upper bounds. We'd prefer to solve
// `numpy <= 2` before solving `numpy >= 1`, since the resolution produced by the former
// might work for the latter, but the inverse is unlikely to be true due to maximum
// version selection. (Selecting `numpy==2.0.0` would satisfy both forks, but selecting
// the latest `numpy` would not.)
```
Closes https://github.com/astral-sh/uv/issues/4926 for now.
## Summary
First part of: https://github.com/astral-sh/uv/issues/4926. We should
solve forks that _don't_ expand the world of supported versions (e.g.,
`python_version >= '3.11'` enables us to select new packages, since we
narrow the supported version range).
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## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
`uv venv` should support adopting python version specified in
`requires-python` from `pyproject.toml`. This allows customization on
the venv setup when syncing from python project.
Closes https://github.com/astral-sh/uv/issues/5552.
It also serves as a workaround to close
https://github.com/astral-sh/uv/issues/5258.
## Test Plan
<!-- How was it tested? -->
1. Run `uv venv` in folder with `pyroject.toml` specifying
`requries-python = "<3.10"`. Python 3.9 is selected for venv.
2. Change to `requries-python = "<3.11"` and run `uv venv` again. Python
3.10 is selected now.
3. Switch to a folder without `pyproject.toml` then run `uv venv`.
Python 3.12 is selected now.
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
Co-authored-by: Zanie Blue <contact@zanie.dev>
Collapses the previous default into "managed" and makes the "managed"
behavior match "installed". People should use "only-managed" if they
want that behavior, it seems overly complicated otherwise.
## Summary
This PR deprecates the `--isolated` flag. The treatment varies across
the APIs:
- For non-preview APIs, we warn but treat it as equivalent to
`--no-config`.
- For preview APIs, we warn and ignore it, with two exceptions...
- For `tool run` and `run` specifically, we don't even warn, because we
can't differentiate the command-specific `--isolated` from the global
`--isolated`.
## Summary
The culmination of #4730. We now have `uv run --isolated` which always
uses a fresh environment (but includes the workspace dependencies as
needed). This enables you to test with strict isolation (e.g., `uv run
--isolated -p foo` will ensure that `foo` is unable to import anything
that isn't an actual dependency).
Closes#5430.
## Summary
This PR gets rid of the global `--isolated` flag (which serves a bunch
of independent responsibilities right now) on `uv tool run` in favor of
a dedicated `--isolated` flag, which tells uv to avoid re-using an
existing tool environment for this invocation. We'll add the same thing
to `uv run`, to avoid using the base project environment.
This will become a bit clearer in #5466, when we deprecate the
`--isolated` flag on the preview APIs.
## Summary
The idea here is that we hide all resolver output (the grayed out
resolver messages, plus the list of environment modifications) by
default in `uv run` and `uv tool run`. You can pass `--show-resolution`
to re-enable them.
Closes https://github.com/astral-sh/uv/issues/5458.
