mirrors/uv
1
0
Fork 0
mirror of https://github.com/astral-sh/uv.git synced 2025-09-27 12:39:09 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

uv-resolver: refactor how we deal with requires-python

Browse source 
This commit refactors how deal with `requires-python` so that instead of
simplifying markers of dependencies inside the resolver, we do it at the
edges of our system. When writing markers to output, we simplify when
there's an obvious `requires-python` context. And when reading markers
as input, we complexity markers with the relevant `requires-python`
constraint.
This commit is contained in:
Andrew Gallant 2024-08-19 18:05:01 -04:00 • committed by Andrew Gallant
parent 94a0a0f2ee
commit 4ff057e108
12 changed files with 544 additions and 164 deletions
Download patch file Download diff file Expand all files Collapse all files

47
crates/uv-resolver/src/error.rs
View file

@ -222,6 +222,7 @@ impl std::fmt::Display for NoSolutionError {
// Transform the error tree for reporting // Transform the error tree for reporting
let mut tree = self.error.clone(); let mut tree = self.error.clone();
simplify_derivation_tree_markers(&self.python_requirement, &mut tree);
let should_display_tree = std::env::var_os("UV_INTERNAL__SHOW_DERIVATION_TREE").is_some() let should_display_tree = std::env::var_os("UV_INTERNAL__SHOW_DERIVATION_TREE").is_some()
|| tracing::enabled!(tracing::Level::TRACE); || tracing::enabled!(tracing::Level::TRACE);
@ -470,6 +471,52 @@ fn collapse_redundant_depends_on_no_versions_inner(
} }
} }
/// Simplifies the markers on pubgrub packages in the given derivation tree
/// according to the given Python requirement.
///
/// For example, when there's a dependency like `foo ; python_version >=
/// '3.11'` and `requires-python = '>=3.11'`, this simplification will remove
/// the `python_version >= '3.11'` marker since it's implied to be true by
/// the `requires-python` setting. This simplifies error messages by reducing
/// noise.
fn simplify_derivation_tree_markers(
python_requirement: &PythonRequirement,
tree: &mut DerivationTree<PubGrubPackage, Range<Version>, UnavailableReason>,
) {
match tree {
DerivationTree::External(External::NotRoot(ref mut pkg, _)) => {
pkg.simplify_markers(python_requirement);
}
DerivationTree::External(External::NoVersions(ref mut pkg, _)) => {
pkg.simplify_markers(python_requirement);
}
DerivationTree::External(External::FromDependencyOf(ref mut pkg1, _, ref mut pkg2, _)) => {
pkg1.simplify_markers(python_requirement);
pkg2.simplify_markers(python_requirement);
}
DerivationTree::External(External::Custom(ref mut pkg, _, _)) => {
pkg.simplify_markers(python_requirement);
}
DerivationTree::Derived(derived) => {
derived.terms = std::mem::take(&mut derived.terms)
.into_iter()
.map(|(mut pkg, term)| {
pkg.simplify_markers(python_requirement);
(pkg, term)
})
.collect();
simplify_derivation_tree_markers(
python_requirement,
Arc::make_mut(&mut derived.cause1),
);
simplify_derivation_tree_markers(
python_requirement,
Arc::make_mut(&mut derived.cause2),
);
}
}
}
/// Given a [`DerivationTree`], collapse incompatibilities for versions of a package that are /// Given a [`DerivationTree`], collapse incompatibilities for versions of a package that are
/// unavailable for the same reason to avoid repeating the same message for every unavailable /// unavailable for the same reason to avoid repeating the same message for every unavailable
/// version. /// version.

322
crates/uv-resolver/src/lock/mod.rs
View file

@ -39,6 +39,7 @@ use uv_workspace::{InstallTarget, Workspace};
pub use crate::lock::requirements_txt::RequirementsTxtExport; pub use crate::lock::requirements_txt::RequirementsTxtExport;
pub use crate::lock::tree::TreeDisplay; pub use crate::lock::tree::TreeDisplay;
use crate::requires_python::SimplifiedMarkerTree;
use crate::resolution::{AnnotatedDist, ResolutionGraphNode}; use crate::resolution::{AnnotatedDist, ResolutionGraphNode};
use crate::{ExcludeNewer, PrereleaseMode, RequiresPython, ResolutionGraph, ResolutionMode}; use crate::{ExcludeNewer, PrereleaseMode, RequiresPython, ResolutionGraph, ResolutionMode};
@ -108,7 +109,7 @@ impl Lock {
continue; continue;
}; };
let marker = edge.weight().clone(); let marker = edge.weight().clone();
package.add_dependency(dependency_dist, marker, root)?; package.add_dependency(&requires_python, dependency_dist, marker, root)?;
} }
let id = package.id.clone(); let id = package.id.clone();
@ -141,6 +142,7 @@ impl Lock {
}; };
let marker = edge.weight().clone(); let marker = edge.weight().clone();
package.add_optional_dependency( package.add_optional_dependency(
&requires_python,
extra.clone(), extra.clone(),
dependency_dist, dependency_dist,
marker, marker,
@ -163,7 +165,13 @@ impl Lock {
continue; continue;
}; };
let marker = edge.weight().clone(); let marker = edge.weight().clone();
package.add_dev_dependency(group.clone(), dependency_dist, marker, root)?; package.add_dev_dependency(
&requires_python,
group.clone(),
dependency_dist,
marker,
root,
)?;
} }
} }
} }
@ -370,7 +378,19 @@ impl Lock {
/// Record the supported environments that were used to generate this lock. /// Record the supported environments that were used to generate this lock.
#[must_use] #[must_use]
pub fn with_supported_environments(mut self, supported_environments: Vec<MarkerTree>) -> Self { pub fn with_supported_environments(mut self, supported_environments: Vec<MarkerTree>) -> Self {
self.supported_environments = supported_environments; // We "complexify" the markers given, since the supported
// environments given might be coming directly from what's written in
// `pyproject.toml`, and those are assumed to be simplified (i.e.,
// they assume `requires-python` is true). But a `Lock` always uses
// non-simplified markers internally, so we need to re-complexify them
// here.
//
// The nice thing about complexifying is that it's a no-op if the
// markers given have already been complexified.
self.supported_environments = supported_environments
.into_iter()
.map(|marker| self.requires_python.complexify_markers(marker))
.collect();
self self
} }
@ -424,6 +444,22 @@ impl Lock {
&self.manifest.members &self.manifest.members
} }
/// Returns the supported environments that were used to generate this
/// lock.
///
/// The markers returned here are "simplified" with respect to the lock
/// file's `requires-python` setting. This means these should only be used
/// for direct comparison purposes with the supported environments written
/// by a human in `pyproject.toml`. (Think of "supported environments" in
/// `pyproject.toml` as having an implicit `and python_full_version >=
/// '{requires-python-bound}'` attached to each one.)
pub fn simplified_supported_environments(&self) -> Vec<MarkerTree> {
self.supported_environments()
.iter()
.map(|marker| self.requires_python.simplify_markers(marker.clone()))
.collect()
}
/// If this lockfile was built from a forking resolution with non-identical forks, return the /// If this lockfile was built from a forking resolution with non-identical forks, return the
/// markers of those forks, otherwise `None`. /// markers of those forks, otherwise `None`.
pub fn fork_markers(&self) -> &[MarkerTree] { pub fn fork_markers(&self) -> &[MarkerTree] {
@ -512,7 +548,7 @@ impl Lock {
)) ))
}; };
for dep in deps { for dep in deps {
if dep.marker.evaluate(marker_env, &[]) { if dep.complexified_marker.evaluate(marker_env, &[]) {
let dep_dist = self.find_by_id(&dep.package_id); let dep_dist = self.find_by_id(&dep.package_id);
if seen.insert((&dep.package_id, None)) { if seen.insert((&dep.package_id, None)) {
queue.push_back((dep_dist, None)); queue.push_back((dep_dist, None));
@ -547,8 +583,8 @@ impl Lock {
let fork_markers = each_element_on_its_line_array( let fork_markers = each_element_on_its_line_array(
self.fork_markers self.fork_markers
.iter() .iter()
.filter_map(MarkerTree::contents) .map(|marker| SimplifiedMarkerTree::new(&self.requires_python, marker.clone()))
.map(|marker| marker.to_string()), .filter_map(|marker| marker.try_to_string()),
); );
doc.insert("resolution-markers", value(fork_markers)); doc.insert("resolution-markers", value(fork_markers));
} }
@ -557,8 +593,8 @@ impl Lock {
let supported_environments = each_element_on_its_line_array( let supported_environments = each_element_on_its_line_array(
self.supported_environments self.supported_environments
.iter() .iter()
.filter_map(MarkerTree::contents) .map(|marker| SimplifiedMarkerTree::new(&self.requires_python, marker.clone()))
.map(|marker| marker.to_string()), .filter_map(|marker| marker.try_to_string()),
); );
doc.insert("supported-markers", value(supported_environments)); doc.insert("supported-markers", value(supported_environments));
} }
@ -682,7 +718,7 @@ impl Lock {
let mut packages = ArrayOfTables::new(); let mut packages = ArrayOfTables::new();
for dist in &self.packages { for dist in &self.packages {
packages.push(dist.to_toml(&dist_count_by_name)?); packages.push(dist.to_toml(&self.requires_python, &dist_count_by_name)?);
} }
doc.insert("package", Item::ArrayOfTables(packages)); doc.insert("package", Item::ArrayOfTables(packages));
@ -1174,9 +1210,9 @@ struct LockWire {
/// If this lockfile was built from a forking resolution with non-identical forks, store the /// If this lockfile was built from a forking resolution with non-identical forks, store the
/// forks in the lockfile so we can recreate them in subsequent resolutions. /// forks in the lockfile so we can recreate them in subsequent resolutions.
#[serde(rename = "resolution-markers", default)] #[serde(rename = "resolution-markers", default)]
fork_markers: Vec<MarkerTree>, fork_markers: Vec<SimplifiedMarkerTree>,
#[serde(rename = "supported-markers", default)] #[serde(rename = "supported-markers", default)]
supported_environments: Vec<MarkerTree>, supported_environments: Vec<SimplifiedMarkerTree>,
/// We discard the lockfile if these options match. /// We discard the lockfile if these options match.
#[serde(default)] #[serde(default)]
options: ResolverOptions, options: ResolverOptions,
@ -1186,20 +1222,6 @@ struct LockWire {
packages: Vec<PackageWire>, packages: Vec<PackageWire>,
} }
impl From<Lock> for LockWire {
fn from(lock: Lock) -> LockWire {
LockWire {
version: lock.version,
requires_python: lock.requires_python,
fork_markers: lock.fork_markers,
supported_environments: lock.supported_environments,
options: lock.options,
manifest: lock.manifest,
packages: lock.packages.into_iter().map(PackageWire::from).collect(),
}
}
}
impl TryFrom<LockWire> for Lock { impl TryFrom<LockWire> for Lock {
type Error = LockError; type Error = LockError;
@ -1224,17 +1246,62 @@ impl TryFrom<LockWire> for Lock {
let packages = wire let packages = wire
.packages .packages
.into_iter() .into_iter()
.map(|dist| dist.unwire(&unambiguous_package_ids)) .map(|dist| dist.unwire(&wire.requires_python, &unambiguous_package_ids))
.collect::<Result<Vec<_>, _>>()?; .collect::<Result<Vec<_>, _>>()?;
Lock::new( let supported_environments = wire
.supported_environments
.into_iter()
.map(|simplified_marker| simplified_marker.into_marker(&wire.requires_python))
.collect();
let fork_markers = wire
.fork_markers
.into_iter()
.map(|simplified_marker| simplified_marker.into_marker(&wire.requires_python))
.collect();
let lock = Lock::new(
wire.version, wire.version,
packages, packages,
wire.requires_python, wire.requires_python,
wire.options, wire.options,
wire.manifest, wire.manifest,
wire.supported_environments, supported_environments,
wire.fork_markers, fork_markers,
) )?;
/*
// TODO: Use the below in tests to validate we don't produce a
// trivially incorrect lock file.
let mut name_to_markers: BTreeMap<&PackageName, Vec<(&Version, &MarkerTree)>> =
BTreeMap::new();
for package in &lock.packages {
for dep in &package.dependencies {
name_to_markers
.entry(&dep.package_id.name)
.or_default()
.push((&dep.package_id.version, &dep.marker));
}
}
for (name, marker_trees) in name_to_markers {
for (i, (version1, marker1)) in marker_trees.iter().enumerate() {
for (version2, marker2) in &marker_trees[i + 1..] {
if version1 == version2 {
continue;
}
if !marker1.is_disjoint(marker2) {
eprintln!("{}", lock.to_toml().unwrap());
assert!(
false,
"[{marker1:?}] (for version {version1}) is not disjoint with \
[{marker2:?}] (for version {version2}) \
for package `{name}`",
);
}
}
}
}
*/
Ok(lock)
} }
} }
@ -1316,14 +1383,38 @@ impl Package {
/// Add the [`AnnotatedDist`] as a dependency of the [`Package`]. /// Add the [`AnnotatedDist`] as a dependency of the [`Package`].
fn add_dependency( fn add_dependency(
&mut self, &mut self,
requires_python: &RequiresPython,
annotated_dist: &AnnotatedDist, annotated_dist: &AnnotatedDist,
marker: MarkerTree, marker: MarkerTree,
root: &Path, root: &Path,
) -> Result<(), LockError> { ) -> Result<(), LockError> {
let new_dep = Dependency::from_annotated_dist(annotated_dist, marker, root)?; let new_dep =
Dependency::from_annotated_dist(requires_python, annotated_dist, marker, root)?;
for existing_dep in &mut self.dependencies { for existing_dep in &mut self.dependencies {
if existing_dep.package_id == new_dep.package_id if existing_dep.package_id == new_dep.package_id
&& existing_dep.marker == new_dep.marker // It's important that we do a comparison on
// *simplified* markers here. In particular, when
// we write markers out to the lock file, we use
// "simplified" markers, or markers that are simplified
// *given* that `requires-python` is satisfied. So if
// we don't do equality based on what the simplified
// marker is, we might wind up not merging dependencies
// that ought to be merged and thus writing out extra
// entries.
//
// For example, if `requires-python = '>=3.8'` and we
// have `foo==1` and
// `foo==1 ; python_version >= '3.8'` dependencies,
// then they don't have equivalent complexified
// markers, but their simplified markers are identical.
//
// NOTE: It does seem like perhaps this should
// be implemented semantically/algebraically on
// `MarkerTree` itself, but it wasn't totally clear
// how to do that. I think `pep508` would need to
// grow a concept of "requires python" and provide an
// operation specifically for that.
&& existing_dep.simplified_marker == new_dep.simplified_marker
{ {
existing_dep.extra.extend(new_dep.extra); existing_dep.extra.extend(new_dep.extra);
return Ok(()); return Ok(());
@ -1337,15 +1428,20 @@ impl Package {
/// Add the [`AnnotatedDist`] as an optional dependency of the [`Package`]. /// Add the [`AnnotatedDist`] as an optional dependency of the [`Package`].
fn add_optional_dependency( fn add_optional_dependency(
&mut self, &mut self,
requires_python: &RequiresPython,
extra: ExtraName, extra: ExtraName,
annotated_dist: &AnnotatedDist, annotated_dist: &AnnotatedDist,
marker: MarkerTree, marker: MarkerTree,
root: &Path, root: &Path,
) -> Result<(), LockError> { ) -> Result<(), LockError> {
let dep = Dependency::from_annotated_dist(annotated_dist, marker, root)?; let dep = Dependency::from_annotated_dist(requires_python, annotated_dist, marker, root)?;
let optional_deps = self.optional_dependencies.entry(extra).or_default(); let optional_deps = self.optional_dependencies.entry(extra).or_default();
for existing_dep in &mut *optional_deps { for existing_dep in &mut *optional_deps {
if existing_dep.package_id == dep.package_id && existing_dep.marker == dep.marker { if existing_dep.package_id == dep.package_id
// See note in add_dependency for why we use
// simplified markers here.
&& existing_dep.simplified_marker == dep.simplified_marker
{
existing_dep.extra.extend(dep.extra); existing_dep.extra.extend(dep.extra);
return Ok(()); return Ok(());
} }
@ -1358,15 +1454,20 @@ impl Package {
/// Add the [`AnnotatedDist`] as a development dependency of the [`Package`]. /// Add the [`AnnotatedDist`] as a development dependency of the [`Package`].
fn add_dev_dependency( fn add_dev_dependency(
&mut self, &mut self,
requires_python: &RequiresPython,
dev: GroupName, dev: GroupName,
annotated_dist: &AnnotatedDist, annotated_dist: &AnnotatedDist,
marker: MarkerTree, marker: MarkerTree,
root: &Path, root: &Path,
) -> Result<(), LockError> { ) -> Result<(), LockError> {
let dep = Dependency::from_annotated_dist(annotated_dist, marker, root)?; let dep = Dependency::from_annotated_dist(requires_python, annotated_dist, marker, root)?;
let dev_deps = self.dev_dependencies.entry(dev).or_default(); let dev_deps = self.dev_dependencies.entry(dev).or_default();
for existing_dep in &mut *dev_deps { for existing_dep in &mut *dev_deps {
if existing_dep.package_id == dep.package_id && existing_dep.marker == dep.marker { if existing_dep.package_id == dep.package_id
// See note in add_dependency for why we use
// simplified markers here.
&& existing_dep.simplified_marker == dep.simplified_marker
{
existing_dep.extra.extend(dep.extra); existing_dep.extra.extend(dep.extra);
return Ok(()); return Ok(());
} }
@ -1634,7 +1735,11 @@ impl Package {
Ok(Some(sdist)) Ok(Some(sdist))
} }
fn to_toml(&self, dist_count_by_name: &FxHashMap<PackageName, u64>) -> anyhow::Result<Table> { fn to_toml(
&self,
requires_python: &RequiresPython,
dist_count_by_name: &FxHashMap<PackageName, u64>,
) -> anyhow::Result<Table> {
let mut table = Table::new(); let mut table = Table::new();
self.id.to_toml(None, &mut table); self.id.to_toml(None, &mut table);
@ -1643,28 +1748,27 @@ impl Package {
let wheels = each_element_on_its_line_array( let wheels = each_element_on_its_line_array(
self.fork_markers self.fork_markers
.iter() .iter()
.filter_map(MarkerTree::contents) .map(|marker| SimplifiedMarkerTree::new(requires_python, marker.clone()))
.map(|marker| marker.to_string()), .filter_map(|marker| marker.try_to_string()),
); );
table.insert("resolution-markers", value(wheels)); table.insert("resolution-markers", value(wheels));
} }
if !self.dependencies.is_empty() { if !self.dependencies.is_empty() {
let deps = each_element_on_its_line_array( let deps = each_element_on_its_line_array(self.dependencies.iter().map(|dep| {
self.dependencies dep.to_toml(requires_python, dist_count_by_name)
.iter() .into_inline_table()
.map(|dep| dep.to_toml(dist_count_by_name).into_inline_table()), }));
);
table.insert("dependencies", value(deps)); table.insert("dependencies", value(deps));
} }
if !self.optional_dependencies.is_empty() { if !self.optional_dependencies.is_empty() {
let mut optional_deps = Table::new(); let mut optional_deps = Table::new();
for (extra, deps) in &self.optional_dependencies { for (extra, deps) in &self.optional_dependencies {
let deps = each_element_on_its_line_array( let deps = each_element_on_its_line_array(deps.iter().map(|dep| {
deps.iter() dep.to_toml(requires_python, dist_count_by_name)
.map(|dep| dep.to_toml(dist_count_by_name).into_inline_table()), .into_inline_table()
); }));
if !deps.is_empty() { if !deps.is_empty() {
optional_deps.insert(extra.as_ref(), value(deps)); optional_deps.insert(extra.as_ref(), value(deps));
} }
@ -1677,10 +1781,10 @@ impl Package {
if !self.dev_dependencies.is_empty() { if !self.dev_dependencies.is_empty() {
let mut dev_dependencies = Table::new(); let mut dev_dependencies = Table::new();
for (extra, deps) in &self.dev_dependencies { for (extra, deps) in &self.dev_dependencies {
let deps = each_element_on_its_line_array( let deps = each_element_on_its_line_array(deps.iter().map(|dep| {
deps.iter() dep.to_toml(requires_python, dist_count_by_name)
.map(|dep| dep.to_toml(dist_count_by_name).into_inline_table()), .into_inline_table()
); }));
if !deps.is_empty() { if !deps.is_empty() {
dev_dependencies.insert(extra.as_ref(), value(deps)); dev_dependencies.insert(extra.as_ref(), value(deps));
} }
@ -1849,7 +1953,7 @@ struct PackageWire {
#[serde(default)] #[serde(default)]
wheels: Vec<Wheel>, wheels: Vec<Wheel>,
#[serde(default, rename = "resolution-markers")] #[serde(default, rename = "resolution-markers")]
fork_markers: Vec<MarkerTree>, fork_markers: Vec<SimplifiedMarkerTree>,
#[serde(default)] #[serde(default)]
dependencies: Vec<DependencyWire>, dependencies: Vec<DependencyWire>,
#[serde(default)] #[serde(default)]
@ -1870,11 +1974,12 @@ struct PackageMetadata {
impl PackageWire { impl PackageWire {
fn unwire( fn unwire(
self, self,
requires_python: &RequiresPython,
unambiguous_package_ids: &FxHashMap<PackageName, PackageId>, unambiguous_package_ids: &FxHashMap<PackageName, PackageId>,
) -> Result<Package, LockError> { ) -> Result<Package, LockError> {
let unwire_deps = |deps: Vec<DependencyWire>| -> Result<Vec<Dependency>, LockError> { let unwire_deps = |deps: Vec<DependencyWire>| -> Result<Vec<Dependency>, LockError> {
deps.into_iter() deps.into_iter()
.map(|dep| dep.unwire(unambiguous_package_ids)) .map(|dep| dep.unwire(requires_python, unambiguous_package_ids))
.collect() .collect()
}; };
Ok(Package { Ok(Package {
@ -1882,7 +1987,11 @@ impl PackageWire {
metadata: self.metadata, metadata: self.metadata,
sdist: self.sdist, sdist: self.sdist,
wheels: self.wheels, wheels: self.wheels,
fork_markers: self.fork_markers, fork_markers: self
.fork_markers
.into_iter()
.map(|simplified_marker| simplified_marker.into_marker(requires_python))
.collect(),
dependencies: unwire_deps(self.dependencies)?, dependencies: unwire_deps(self.dependencies)?,
optional_dependencies: self optional_dependencies: self
.optional_dependencies .optional_dependencies
@ -1898,32 +2007,6 @@ impl PackageWire {
} }
} }
impl From<Package> for PackageWire {
fn from(dist: Package) -> PackageWire {
let wire_deps = |deps: Vec<Dependency>| -> Vec<DependencyWire> {
deps.into_iter().map(DependencyWire::from).collect()
};
PackageWire {
id: dist.id,
metadata: dist.metadata,
sdist: dist.sdist,
wheels: dist.wheels,
fork_markers: dist.fork_markers,
dependencies: wire_deps(dist.dependencies),
optional_dependencies: dist
.optional_dependencies
.into_iter()
.map(|(extra, deps)| (extra, wire_deps(deps)))
.collect(),
dev_dependencies: dist
.dev_dependencies
.into_iter()
.map(|(group, deps)| (group, wire_deps(deps)))
.collect(),
}
}
}
/// Inside the lockfile, we match a dependency entry to a package entry through a key made up /// Inside the lockfile, we match a dependency entry to a package entry through a key made up
/// of the name, the version and the source url. /// of the name, the version and the source url.
#[derive(Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord, serde::Deserialize)] #[derive(Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord, serde::Deserialize)]
@ -3131,26 +3214,70 @@ impl TryFrom<WheelWire> for Wheel {
struct Dependency { struct Dependency {
package_id: PackageId, package_id: PackageId,
extra: BTreeSet<ExtraName>, extra: BTreeSet<ExtraName>,
marker: MarkerTree, /// A marker simplified by assuming `requires-python` is satisfied.
/// So if `requires-python = '>=3.8'`, then
/// `python_version >= '3.8' and python_version < '3.12'`
/// gets simplfiied to `python_version < '3.12'`.
///
/// Generally speaking, this marker should not be exposed to
/// anything outside this module unless it's for a specialized use
/// case. But specifically, it should never be used to evaluate
/// against a marker environment or for disjointness checks or any
/// other kind of marker algebra.
///
/// It exists because there are some cases where we do actually
/// want to compare markers in their "simplified" form. For
/// example, when collapsing the extras on duplicate dependencies.
/// Even if a dependency has different complexified markers,
/// they might have identical markers once simplified. And since
/// `requires-python` applies to the entire lock file, it's
/// acceptable to do comparisons on the simplified form.
simplified_marker: SimplifiedMarkerTree,
/// The "complexified" marker is a marker that can stand on its
/// own independent of `requires-python`. It can be safely used
/// for any kind of marker algebra.
complexified_marker: MarkerTree,
} }
impl Dependency { impl Dependency {
fn new(
requires_python: &RequiresPython,
package_id: PackageId,
extra: BTreeSet<ExtraName>,
complexified_marker: MarkerTree,
) -> Dependency {
let simplified_marker =
SimplifiedMarkerTree::new(requires_python, complexified_marker.clone());
Dependency {
package_id,
extra,
simplified_marker,
complexified_marker,
}
}
fn from_annotated_dist( fn from_annotated_dist(
requires_python: &RequiresPython,
annotated_dist: &AnnotatedDist, annotated_dist: &AnnotatedDist,
marker: MarkerTree, complexified_marker: MarkerTree,
root: &Path, root: &Path,
) -> Result<Dependency, LockError> { ) -> Result<Dependency, LockError> {
let package_id = PackageId::from_annotated_dist(annotated_dist, root)?; let package_id = PackageId::from_annotated_dist(annotated_dist, root)?;
let extra = annotated_dist.extra.iter().cloned().collect(); let extra = annotated_dist.extra.iter().cloned().collect();
Ok(Self { Ok(Dependency::new(
requires_python,
package_id, package_id,
extra, extra,
marker, complexified_marker,
}) ))
} }
/// Returns the TOML representation of this dependency. /// Returns the TOML representation of this dependency.
fn to_toml(&self, dist_count_by_name: &FxHashMap<PackageName, u64>) -> Table { fn to_toml(
&self,
_requires_python: &RequiresPython,
dist_count_by_name: &FxHashMap<PackageName, u64>,
) -> Table {
let mut table = Table::new(); let mut table = Table::new();
self.package_id self.package_id
.to_toml(Some(dist_count_by_name), &mut table); .to_toml(Some(dist_count_by_name), &mut table);
@ -3162,8 +3289,8 @@ impl Dependency {
.collect::<Array>(); .collect::<Array>();
table.insert("extra", value(extra_array)); table.insert("extra", value(extra_array));
} }
if let Some(marker) = self.marker.contents() { if let Some(marker) = self.simplified_marker.try_to_string() {
table.insert("marker", value(marker.to_string())); table.insert("marker", value(marker));
} }
table table
@ -3199,32 +3326,25 @@ struct DependencyWire {
#[serde(default)] #[serde(default)]
extra: BTreeSet<ExtraName>, extra: BTreeSet<ExtraName>,
#[serde(default)] #[serde(default)]
marker: MarkerTree, marker: SimplifiedMarkerTree,
} }
impl DependencyWire { impl DependencyWire {
fn unwire( fn unwire(
self, self,
requires_python: &RequiresPython,
unambiguous_package_ids: &FxHashMap<PackageName, PackageId>, unambiguous_package_ids: &FxHashMap<PackageName, PackageId>,
) -> Result<Dependency, LockError> { ) -> Result<Dependency, LockError> {
let complexified_marker = self.marker.clone().into_marker(requires_python);
Ok(Dependency { Ok(Dependency {
package_id: self.package_id.unwire(unambiguous_package_ids)?, package_id: self.package_id.unwire(unambiguous_package_ids)?,
extra: self.extra, extra: self.extra,
marker: self.marker, simplified_marker: self.marker,
complexified_marker,
}) })
} }
} }
impl From<Dependency> for DependencyWire {
fn from(dependency: Dependency) -> DependencyWire {
DependencyWire {
package_id: PackageIdForDependency::from(dependency.package_id),
extra: dependency.extra,
marker: dependency.marker,
}
}
}
/// A single hash for a distribution artifact in a lockfile. /// A single hash for a distribution artifact in a lockfile.
/// ///
/// A hash is encoded as a single TOML string in the format /// A hash is encoded as a single TOML string in the format

6
crates/uv-resolver/src/lock/requirements_txt.rs
View file

@ -102,7 +102,11 @@ impl<'lock> RequirementsTxtExport<'lock> {
// Add the edge. // Add the edge.
let dep_index = inverse[&dep.package_id]; let dep_index = inverse[&dep.package_id];
petgraph.add_edge(index, dep_index, dep.marker.clone()); petgraph.add_edge(
index,
dep_index,
dep.simplified_marker.as_simplified_marker_tree().clone(),
);
// Push its dependencies on the queue. // Push its dependencies on the queue.
if seen.insert((&dep.package_id, None)) { if seen.insert((&dep.package_id, None)) {

24
crates/uv-resolver/src/lock/tree.rs
View file

@ -62,7 +62,8 @@ impl<'env> TreeDisplay<'env> {
Cow::Owned(Dependency { Cow::Owned(Dependency {
package_id: packages.id.clone(), package_id: packages.id.clone(),
extra: dependency.extra.clone(), extra: dependency.extra.clone(),
marker: dependency.marker.clone(), simplified_marker: dependency.simplified_marker.clone(),
complexified_marker: dependency.complexified_marker.clone(),
}) })
} else { } else {
Cow::Borrowed(dependency) Cow::Borrowed(dependency)
@ -72,7 +73,10 @@ impl<'env> TreeDisplay<'env> {
// Skip dependencies that don't apply to the current environment. // Skip dependencies that don't apply to the current environment.
if let Some(environment_markers) = markers { if let Some(environment_markers) = markers {
if !dependency.marker.evaluate(environment_markers, &[]) { if !dependency
.complexified_marker
.evaluate(environment_markers, &[])
{
continue; continue;
} }
} }
@ -91,7 +95,8 @@ impl<'env> TreeDisplay<'env> {
Cow::Owned(Dependency { Cow::Owned(Dependency {
package_id: packages.id.clone(), package_id: packages.id.clone(),
extra: dependency.extra.clone(), extra: dependency.extra.clone(),
marker: dependency.marker.clone(), simplified_marker: dependency.simplified_marker.clone(),
complexified_marker: dependency.complexified_marker.clone(),
}) })
} else { } else {
Cow::Borrowed(dependency) Cow::Borrowed(dependency)
@ -101,7 +106,10 @@ impl<'env> TreeDisplay<'env> {
// Skip dependencies that don't apply to the current environment. // Skip dependencies that don't apply to the current environment.
if let Some(environment_markers) = markers { if let Some(environment_markers) = markers {
if !dependency.marker.evaluate(environment_markers, &[]) { if !dependency
.complexified_marker
.evaluate(environment_markers, &[])
{
continue; continue;
} }
} }
@ -126,7 +134,8 @@ impl<'env> TreeDisplay<'env> {
Cow::Owned(Dependency { Cow::Owned(Dependency {
package_id: packages.id.clone(), package_id: packages.id.clone(),
extra: dependency.extra.clone(), extra: dependency.extra.clone(),
marker: dependency.marker.clone(), simplified_marker: dependency.simplified_marker.clone(),
complexified_marker: dependency.complexified_marker.clone(),
}) })
} else { } else {
Cow::Borrowed(dependency) Cow::Borrowed(dependency)
@ -136,7 +145,10 @@ impl<'env> TreeDisplay<'env> {
// Skip dependencies that don't apply to the current environment. // Skip dependencies that don't apply to the current environment.
if let Some(environment_markers) = markers { if let Some(environment_markers) = markers {
if !dependency.marker.evaluate(environment_markers, &[]) { if !dependency
.complexified_marker
.evaluate(environment_markers, &[])
{
continue; continue;
} }
} }

63
crates/uv-resolver/src/pubgrub/package.rs
View file

@ -4,6 +4,8 @@ use std::sync::Arc;
use pep508_rs::{MarkerTree, MarkerTreeContents}; use pep508_rs::{MarkerTree, MarkerTreeContents};
use uv_normalize::{ExtraName, GroupName, PackageName}; use uv_normalize::{ExtraName, GroupName, PackageName};
use crate::python_requirement::PythonRequirement;
/// [`Arc`] wrapper around [`PubGrubPackageInner`] to make cloning (inside PubGrub) cheap. /// [`Arc`] wrapper around [`PubGrubPackageInner`] to make cloning (inside PubGrub) cheap.
#[derive(Debug, Clone, Eq, Hash, PartialEq, PartialOrd, Ord)] #[derive(Debug, Clone, Eq, Hash, PartialEq, PartialOrd, Ord)]
pub struct PubGrubPackage(Arc<PubGrubPackageInner>); pub struct PubGrubPackage(Arc<PubGrubPackageInner>);
@ -85,7 +87,8 @@ pub enum PubGrubPackageInner {
/// rather than the `Marker` variant. /// rather than the `Marker` variant.
Marker { Marker {
name: PackageName, name: PackageName,
marker: MarkerTreeContents, /// The marker associated with this proxy package.
marker: MarkerTree,
}, },
} }
@ -101,15 +104,16 @@ impl PubGrubPackage {
// extras end up having two distinct marker expressions, which in turn // extras end up having two distinct marker expressions, which in turn
// makes them two distinct packages. This results in PubGrub being // makes them two distinct packages. This results in PubGrub being
// unable to unify version constraints across such packages. // unable to unify version constraints across such packages.
let marker = marker.simplify_extras_with(|_| true).contents(); let tree = marker.simplify_extras_with(|_| true);
let marker = tree.contents();
if let Some(extra) = extra { if let Some(extra) = extra {
Self(Arc::new(PubGrubPackageInner::Extra { Self(Arc::new(PubGrubPackageInner::Extra {
name, name,
extra, extra,
marker, marker,
})) }))
} else if let Some(marker) = marker { } else if marker.is_some() {
Self(Arc::new(PubGrubPackageInner::Marker { name, marker })) Self(Arc::new(PubGrubPackageInner::Marker { name, marker: tree }))
} else { } else {
Self(Arc::new(PubGrubPackageInner::Package { Self(Arc::new(PubGrubPackageInner::Package {
name, name,
@ -158,7 +162,7 @@ impl PubGrubPackage {
| PubGrubPackageInner::Dev { marker, .. } => { | PubGrubPackageInner::Dev { marker, .. } => {
marker.as_ref().map(MarkerTreeContents::as_ref) marker.as_ref().map(MarkerTreeContents::as_ref)
} }
PubGrubPackageInner::Marker { marker, .. } => Some(marker.as_ref()), PubGrubPackageInner::Marker { marker, .. } => Some(marker),
} }
} }
@ -171,6 +175,47 @@ impl PubGrubPackage {
| PubGrubPackageInner::Marker { .. } | PubGrubPackageInner::Marker { .. }
) )
} }
/// This simplifies the markers on this package (if any exist) using the
/// given Python requirement as assumed context.
///
/// See `RequiresPython::simplify_markers` for more details.
///
/// NOTE: This routine is kind of weird, because this should only really be
/// applied in contexts where the `PubGrubPackage` is printed as output.
/// So in theory, this should be a transformation into a new type with a
/// "printable" `PubGrubPackage` coupled with a `Requires-Python`. But at
/// time of writing, this was a larger refactor, particularly in the error
/// reporting where this routine is used.
pub(crate) fn simplify_markers(&mut self, python_requirement: &PythonRequirement) {
match *Arc::make_mut(&mut self.0) {
PubGrubPackageInner::Root(_) | PubGrubPackageInner::Python(_) => {}
PubGrubPackageInner::Package { ref mut marker, .. }
| PubGrubPackageInner::Extra { ref mut marker, .. }
| PubGrubPackageInner::Dev { ref mut marker, .. } => {
let Some(contents) = marker.as_mut() else {
return;
};
let tree = MarkerTree::from(contents.clone());
*marker = python_requirement.simplify_markers(tree).contents();
}
PubGrubPackageInner::Marker { ref mut marker, .. } => {
*marker = python_requirement.simplify_markers(marker.clone());
}
}
}
#[allow(dead_code)]
pub(crate) fn kind(&self) -> &'static str {
match &**self {
PubGrubPackageInner::Root(_) => "root",
PubGrubPackageInner::Python(_) => "python",
PubGrubPackageInner::Package { .. } => "package",
PubGrubPackageInner::Extra { .. } => "extra",
PubGrubPackageInner::Dev { .. } => "dev",
PubGrubPackageInner::Marker { .. } => "marker",
}
}
} }
#[derive(Debug, Copy, Clone, Eq, PartialEq, PartialOrd, Hash, Ord)] #[derive(Debug, Copy, Clone, Eq, PartialEq, PartialOrd, Hash, Ord)]
@ -234,7 +279,13 @@ impl std::fmt::Display for PubGrubPackageInner {
} => { } => {
write!(f, "{name}[{dev}]{{{marker}}}") write!(f, "{name}[{dev}]{{{marker}}}")
} }
Self::Marker { name, marker, .. } => write!(f, "{name}{{{marker}}}"), Self::Marker { name, marker, .. } => {
if let Some(marker) = marker.contents() {
write!(f, "{name}{{{marker}}}")
} else {
write!(f, "{name}")
}
}
Self::Extra { name, extra, .. } => write!(f, "{name}[{extra}]"), Self::Extra { name, extra, .. } => write!(f, "{name}[{extra}]"),
Self::Dev { name, dev, .. } => write!(f, "{name}:{dev}"), Self::Dev { name, dev, .. } => write!(f, "{name}:{dev}"),
// It is guaranteed that `extra` and `dev` are never set at the same time. // It is guaranteed that `extra` and `dev` are never set at the same time.

17
crates/uv-resolver/src/python_requirement.rs
View file

@ -1,4 +1,5 @@
use pep440_rs::Version; use pep440_rs::Version;
use pep508_rs::MarkerTree;
use uv_python::{Interpreter, PythonVersion}; use uv_python::{Interpreter, PythonVersion};
use crate::{RequiresPython, RequiresPythonRange}; use crate::{RequiresPython, RequiresPythonRange};
@ -89,6 +90,22 @@ impl PythonRequirement {
pub fn source(&self) -> PythonRequirementSource { pub fn source(&self) -> PythonRequirementSource {
self.source self.source
} }
/// A wrapper around `RequiresPython::simplify_markers`. See its docs for
/// more info.
///
/// When this `PythonRequirement` isn't `RequiresPython`, the given markers
/// are returned unchanged.
pub(crate) fn simplify_markers(&self, marker: MarkerTree) -> MarkerTree {
self.target.simplify_markers(marker)
}
/// Return a [`MarkerTree`] representing the Python requirement.
///
/// See: [`RequiresPython::to_marker_tree`]
pub fn to_marker_tree(&self) -> MarkerTree {
self.target.to_marker_tree()
}
} }
#[derive(Debug, Copy, Clone, Eq, PartialEq, PartialOrd, Hash, Ord)] #[derive(Debug, Copy, Clone, Eq, PartialEq, PartialOrd, Hash, Ord)]

118
crates/uv-resolver/src/requires_python.rs
View file

@ -125,8 +125,19 @@ impl RequiresPython {
} }
} }
/// Returns the [`RequiresPython`] as a [`MarkerTree`]. /// Returns this `Requires-Python` specifier as an equivalent
pub fn markers(&self) -> MarkerTree { /// [`MarkerTree`] utilizing the `python_full_version` marker field.
///
/// This is useful for comparing a `Requires-Python` specifier with
/// arbitrary marker expressions. For example, one can ask whether the
/// returned marker expression is disjoint with another marker expression.
/// If it is, then one can conclude that the `Requires-Python` specifier
/// excludes the dependency with that other marker expression.
///
/// If this `Requires-Python` specifier has no constraints, then this
/// returns a marker tree that evaluates to `true` for all possible marker
/// environments.
pub fn to_marker_tree(&self) -> MarkerTree {
match (self.range.0.as_ref(), self.range.1.as_ref()) { match (self.range.0.as_ref(), self.range.1.as_ref()) {
(Bound::Included(lower), Bound::Included(upper)) => { (Bound::Included(lower), Bound::Included(upper)) => {
let mut lower = MarkerTree::expression(MarkerExpression::Version { let mut lower = MarkerTree::expression(MarkerExpression::Version {
@ -283,6 +294,69 @@ impl RequiresPython {
&self.range &self.range
} }
/// Simplifies the given markers in such a way as to assume that
/// the Python version is constrained by this Python version bound.
///
/// For example, with `requires-python = '>=3.8'`, a marker like this:
///
/// ```text
/// python_full_version >= '3.8' and python_full_version < '3.12'
/// ```
///
/// Will be simplified to:
///
/// ```text
/// python_full_version < '3.12'
/// ```
///
/// That is, `python_full_version >= '3.8'` is assumed to be true by virtue
/// of `requires-python`, and is thus not needed in the marker.
///
/// This should be used in contexts in which this assumption is valid to
/// make. Generally, this means it should not be used inside the resolver,
/// but instead near the boundaries of the system (like formatting error
/// messages and writing the lock file). The reason for this is that
/// this simplification fundamentally changes the meaning of the marker,
/// and the *only* correct way to interpret it is in a context in which
/// `requires-python` is known to be true. For example, when markers from
/// a lock file are deserialized and turned into a `ResolutionGraph`, the
/// markers are "complexified" to put the `requires-python` assumption back
/// into the marker explicitly.
pub(crate) fn simplify_markers(&self, marker: MarkerTree) -> MarkerTree {
let simplified = marker.simplify_python_versions(Range::from(self.range().clone()));
// FIXME: This is a hack to avoid the hidden state created by
// ADD's `restrict_versions`. I believe this is sound, but it's
// wasteful and silly.
simplified
.try_to_string()
.map(|s| s.parse().unwrap())
.unwrap_or(MarkerTree::TRUE)
}
/// The inverse of `simplify_markers`.
///
/// This should be applied near the boundaries of uv when markers are
/// deserialized from a context where `requires-python` is assumed. For
/// example, with `requires-python = '>=3.8'` and a marker like:
///
/// ```text
/// python_full_version < '3.12'
/// ```
///
/// It will be "complexified" to:
///
/// ```text
/// python_full_version >= '3.8' and python_full_version < '3.12'
/// ```
pub(crate) fn complexify_markers(&self, mut marker: MarkerTree) -> MarkerTree {
// PERF: There's likely a way to amortize this, particularly
// the construction of `to_marker_tree`. But at time of
// writing, it wasn't clear if this was an actual perf problem
// or not. If it is, try a `std::sync::OnceLock`.
marker.and(self.to_marker_tree());
marker
}
/// Returns `false` if the wheel's tags state it can't be used in the given Python version /// Returns `false` if the wheel's tags state it can't be used in the given Python version
/// range. /// range.
/// ///
@ -477,6 +551,46 @@ impl Ord for RequiresPythonBound {
} }
} }
/// A simplified marker is just like a normal marker, except it has possibly
/// been simplified by `requires-python`.
///
/// A simplified marker should only exist in contexts where a `requires-python`
/// setting can be assumed. In order to get a "normal" marker out of
/// a simplified marker, one must re-contextualize it by adding the
/// `requires-python` constraint back to the marker.
#[derive(Clone, Debug, Default, Eq, PartialEq, PartialOrd, Ord, serde::Deserialize)]
pub(crate) struct SimplifiedMarkerTree(MarkerTree);
impl SimplifiedMarkerTree {
/// Simplifies the given markers by assuming the given `requires-python`
/// bound is true.
pub(crate) fn new(
requires_python: &RequiresPython,
marker: MarkerTree,
) -> SimplifiedMarkerTree {
SimplifiedMarkerTree(requires_python.simplify_markers(marker))
}
/// Complexifies the given markers by adding the given `requires-python` as
/// a constraint to these simplified markers.
pub(crate) fn into_marker(self, requires_python: &RequiresPython) -> MarkerTree {
requires_python.complexify_markers(self.0)
}
/// Attempts to convert this simplified marker to a string.
///
/// This only returns `None` when the underlying marker is always true,
/// i.e., it matches all possible marker environments.
pub(crate) fn try_to_string(&self) -> Option<String> {
self.0.try_to_string()
}
/// Returns the underlying marker tree without re-complexifying them.
pub(crate) fn as_simplified_marker_tree(&self) -> &MarkerTree {
&self.0
}
}
#[cfg(test)] #[cfg(test)]
mod tests { mod tests {
use std::cmp::Ordering; use std::cmp::Ordering;

6
crates/uv-resolver/src/resolution/display.rs
View file

@ -187,7 +187,11 @@ impl std::fmt::Display for DisplayResolutionGraph<'_> {
for (index, node) in nodes { for (index, node) in nodes {
// Display the node itself. // Display the node itself.
let mut line = node let mut line = node
.to_requirements_txt(self.include_extras, self.include_markers) .to_requirements_txt(
&self.resolution.requires_python,
self.include_extras,
self.include_markers,
)
.to_string(); .to_string();
// Display the distribution hashes, if any. // Display the distribution hashes, if any.

20
crates/uv-resolver/src/resolution/requirements_txt.rs
View file

@ -10,7 +10,10 @@ use pep508_rs::{split_scheme, MarkerTree, Scheme};
use pypi_types::HashDigest; use pypi_types::HashDigest;
use uv_normalize::{ExtraName, PackageName}; use uv_normalize::{ExtraName, PackageName};
use crate::resolution::AnnotatedDist; use crate::{
requires_python::{RequiresPython, SimplifiedMarkerTree},
resolution::AnnotatedDist,
};
#[derive(Debug, Clone)] #[derive(Debug, Clone)]
/// A pinned package with its resolved distribution and all the extras that were pinned for it. /// A pinned package with its resolved distribution and all the extras that were pinned for it.
@ -31,6 +34,7 @@ impl RequirementsTxtDist {
/// supported in `requirements.txt`). /// supported in `requirements.txt`).
pub(crate) fn to_requirements_txt( pub(crate) fn to_requirements_txt(
&self, &self,
requires_python: &RequiresPython,
include_extras: bool, include_extras: bool,
include_markers: bool, include_markers: bool,
) -> Cow<str> { ) -> Cow<str> {
@ -90,7 +94,9 @@ impl RequirementsTxtDist {
}; };
if let Some(given) = given { if let Some(given) = given {
return if let Some(markers) = return if let Some(markers) =
self.markers.contents().filter(|_| include_markers) SimplifiedMarkerTree::new(requires_python, self.markers.clone())
.try_to_string()
.filter(|_| include_markers)
{ {
Cow::Owned(format!("{given} ; {markers}")) Cow::Owned(format!("{given} ; {markers}"))
} else { } else {
@ -101,7 +107,10 @@ impl RequirementsTxtDist {
} }
if self.extras.is_empty() || !include_extras { if self.extras.is_empty() || !include_extras {
if let Some(markers) = self.markers.contents().filter(|_| include_markers) { if let Some(markers) = SimplifiedMarkerTree::new(requires_python, self.markers.clone())
.try_to_string()
.filter(|_| include_markers)
{
Cow::Owned(format!("{} ; {}", self.dist.verbatim(), markers)) Cow::Owned(format!("{} ; {}", self.dist.verbatim(), markers))
} else { } else {
self.dist.verbatim() self.dist.verbatim()
@ -110,7 +119,10 @@ impl RequirementsTxtDist {
let mut extras = self.extras.clone(); let mut extras = self.extras.clone();
extras.sort_unstable(); extras.sort_unstable();
extras.dedup(); extras.dedup();
if let Some(markers) = self.markers.contents().filter(|_| include_markers) { if let Some(markers) = SimplifiedMarkerTree::new(requires_python, self.markers.clone())
.try_to_string()
.filter(|_| include_markers)
{
Cow::Owned(format!( Cow::Owned(format!(
"{}[{}]{} ; {}", "{}[{}]{} ; {}",
self.name(), self.name(),

66
crates/uv-resolver/src/resolver/mod.rs
View file

@ -562,6 +562,8 @@ impl<InstalledPackages: InstalledPackagesProvider> ResolverState<InstalledPackag
resolution.nodes.len() resolution.nodes.len()
); );
} }
}
for resolution in &resolutions {
Self::trace_resolution(resolution); Self::trace_resolution(resolution);
} }
ResolutionGraph::from_state( ResolutionGraph::from_state(
@ -1329,7 +1331,7 @@ impl<InstalledPackages: InstalledPackagesProvider> ResolverState<InstalledPackag
name: name.clone(), name: name.clone(),
extra: None, extra: None,
dev: None, dev: None,
marker: marker.cloned(), marker: marker.and_then(MarkerTree::contents),
}), }),
version: Range::singleton(version.clone()), version: Range::singleton(version.clone()),
specifier: None, specifier: None,
@ -1481,35 +1483,17 @@ impl<InstalledPackages: InstalledPackagesProvider> ResolverState<InstalledPackag
self.overrides self.overrides
.apply(dependencies) .apply(dependencies)
.filter_map(move |requirement| { .filter_map(move |requirement| {
let python_marker = python_requirement.to_marker_tree();
// If the requirement would not be selected with any Python version // If the requirement would not be selected with any Python version
// supported by the root, skip it. // supported by the root, skip it.
let requirement = if requirement.marker.is_true() { if python_marker.is_disjoint(&requirement.marker) {
requirement trace!(
} else { "skipping {requirement} because of Requires-Python: {requires_python}",
let requires_python = python_requirement.target(); requires_python = python_requirement.target(),
let marker = requirement.marker.clone().simplify_python_versions(
Range::from(requires_python.range().clone()),
); );
if marker.is_false() {
trace!("skipping {requirement} because of Requires-Python: {requires_python}");
return None; return None;
} }
if marker == requirement.marker {
requirement
} else {
Cow::Owned(Requirement {
name: requirement.name.clone(),
extras: requirement.extras.clone(),
source: requirement.source.clone(),
origin: requirement.origin.clone(),
marker
})
}
};
// If we're in a fork in universal mode, ignore any dependency that isn't part of // If we're in a fork in universal mode, ignore any dependency that isn't part of
// this fork (but will be part of another fork). // this fork (but will be part of another fork).
if let ResolverMarkers::Fork(markers) = markers { if let ResolverMarkers::Fork(markers) = markers {
@ -1572,10 +1556,9 @@ impl<InstalledPackages: InstalledPackagesProvider> ResolverState<InstalledPackag
} else { } else {
let requires_python = python_requirement.target(); let requires_python = python_requirement.target();
let python_marker = python_requirement.to_marker_tree();
let mut marker = constraint.marker.clone().simplify_python_versions( let mut marker = constraint.marker.clone();
Range::from(requires_python.range().clone()),
);
marker.and(requirement.marker.clone()); marker.and(requirement.marker.clone());
// Additionally, if the requirement is `requests ; sys_platform == 'darwin'` // Additionally, if the requirement is `requests ; sys_platform == 'darwin'`
@ -1585,6 +1568,13 @@ impl<InstalledPackages: InstalledPackagesProvider> ResolverState<InstalledPackag
trace!("skipping {constraint} because of Requires-Python: {requires_python}"); trace!("skipping {constraint} because of Requires-Python: {requires_python}");
return None; return None;
} }
if python_marker.is_disjoint(&marker) {
trace!(
"skipping constraint {requirement} because of Requires-Python: {requires_python}",
requires_python = python_requirement.target(),
);
return None;
}
if marker == constraint.marker { if marker == constraint.marker {
Cow::Borrowed(constraint) Cow::Borrowed(constraint)
@ -2345,7 +2335,7 @@ impl ForkState {
to_url: to_url.cloned(), to_url: to_url.cloned(),
to_extra: None, to_extra: None,
to_dev: None, to_dev: None,
marker: MarkerTree::from(dependency_marker.clone()), marker: dependency_marker.clone(),
}; };
edges.insert(edge); edges.insert(edge);
} }
@ -2685,6 +2675,8 @@ impl Forks {
name_to_deps: BTreeMap<PackageName, Vec<PubGrubDependency>>, name_to_deps: BTreeMap<PackageName, Vec<PubGrubDependency>>,
python_requirement: &PythonRequirement, python_requirement: &PythonRequirement,
) -> Forks { ) -> Forks {
let python_marker = python_requirement.to_marker_tree();
let mut forks = vec![Fork { let mut forks = vec![Fork {
dependencies: vec![], dependencies: vec![],
markers: MarkerTree::TRUE, markers: MarkerTree::TRUE,
@ -2713,7 +2705,6 @@ impl Forks {
continue; continue;
} }
for dep in deps { for dep in deps {
// We assume that the marker has already been Python-simplified.
let mut markers = dep.package.marker().cloned().unwrap_or(MarkerTree::TRUE); let mut markers = dep.package.marker().cloned().unwrap_or(MarkerTree::TRUE);
if markers.is_false() { if markers.is_false() {
// If the markers can never be satisfied, then we // If the markers can never be satisfied, then we
@ -2740,17 +2731,25 @@ impl Forks {
continue; continue;
} }
let not_markers = simplify_python(markers.negate(), python_requirement); let not_markers = markers.negate();
let mut new_markers = markers.clone(); let mut new_markers = markers.clone();
new_markers.and(simplify_python(fork.markers.negate(), python_requirement)); new_markers.and(fork.markers.negate());
if !fork.markers.is_disjoint(&not_markers) { if !fork.markers.is_disjoint(&not_markers) {
let mut new_fork = fork.clone(); let mut new_fork = fork.clone();
new_fork.intersect(not_markers); new_fork.intersect(not_markers);
// Filter out any forks we created that are disjoint with our
// Python requirement.
if !new_fork.markers.is_disjoint(&python_marker) {
new.push(new_fork); new.push(new_fork);
} }
}
fork.dependencies.push(dep.clone()); fork.dependencies.push(dep.clone());
fork.intersect(markers); fork.intersect(markers);
// Filter out any forks we created that are disjoint with our
// Python requirement.
if !fork.markers.is_disjoint(&python_marker) {
new.push(fork); new.push(fork);
}
markers = new_markers; markers = new_markers;
} }
forks = new; forks = new;
@ -2848,8 +2847,3 @@ impl PartialOrd for Fork {
Some(self.cmp(other)) Some(self.cmp(other))
} }
} }
/// Simplify a [`MarkerTree`] based on a [`PythonRequirement`].
fn simplify_python(marker: MarkerTree, python_requirement: &PythonRequirement) -> MarkerTree {
marker.simplify_python_versions(Range::from(python_requirement.target().range().clone()))
}

4
crates/uv/src/commands/project/lock.rs
View file

@ -331,7 +331,7 @@ async fn do_lock(
.into_iter() .into_iter()
.flatten() .flatten()
{ {
if requires_python.markers().is_disjoint(environment) { if requires_python.to_marker_tree().is_disjoint(environment) {
return if let Some(contents) = environment.contents() { return if let Some(contents) = environment.contents() {
Err(ProjectError::DisjointEnvironment( Err(ProjectError::DisjointEnvironment(
contents, contents,
@ -637,7 +637,7 @@ impl ValidatedLock {
} }
// If the set of supported environments has changed, we have to perform a clean resolution. // If the set of supported environments has changed, we have to perform a clean resolution.
if lock.supported_environments() if lock.simplified_supported_environments()
!= environments != environments
.map(SupportedEnvironments::as_markers) .map(SupportedEnvironments::as_markers)
.unwrap_or_default() .unwrap_or_default()

7
crates/uv/src/commands/project/sync.rs
View file

@ -192,7 +192,12 @@ pub(super) async fn do_sync(
if !environments.is_empty() { if !environments.is_empty() {
if !environments.iter().any(|env| env.evaluate(&markers, &[])) { if !environments.iter().any(|env| env.evaluate(&markers, &[])) {
return Err(ProjectError::LockedPlatformIncompatibility( return Err(ProjectError::LockedPlatformIncompatibility(
environments // For error reporting, we use the "simplified"
// supported environments, because these correspond to
// what the end user actually wrote. The non-simplified
// environments, by contrast, are explicitly
// constrained by `requires-python`.
lock.simplified_supported_environments()
.iter() .iter()
.filter_map(MarkerTree::contents) .filter_map(MarkerTree::contents)
.map(|env| format!("`{env}`")) .map(|env| format!("`{env}`"))