mirror of https://github.com/astral-sh/uv
75 lines
2.8 KiB
Rust
75 lines
2.8 KiB
Rust
// SPDX-License-Identifier: MPL-2.0
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use pubgrub::error::PubGrubError;
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use pubgrub::range::Range;
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use pubgrub::report::{DefaultStringReporter, Reporter};
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use pubgrub::solver::{resolve, OfflineDependencyProvider};
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use pubgrub::version::SemanticVersion;
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type SemVS = Range<SemanticVersion>;
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// `root` depends on `menu` and `icons 1.0.0`
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// `menu 1.0.0` depends on `dropdown < 2.0.0`
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// `menu >= 1.1.0` depends on `dropdown >= 2.0.0`
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// `dropdown 1.8.0` has no dependency
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// `dropdown >= 2.0.0` depends on `icons 2.0.0`
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// `icons` has no dependency
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#[rustfmt::skip]
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fn main() {
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let mut dependency_provider = OfflineDependencyProvider::<&str, SemVS>::new();
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// Direct dependencies: menu and icons.
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dependency_provider.add_dependencies("root", (1, 0, 0), [
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("menu", Range::full()),
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("icons", Range::singleton((1, 0, 0))),
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]);
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// Dependencies of the menu lib.
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dependency_provider.add_dependencies("menu", (1, 0, 0), [
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("dropdown", Range::from_range_bounds(..(2, 0, 0))),
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]);
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dependency_provider.add_dependencies("menu", (1, 1, 0), [
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("dropdown", Range::from_range_bounds((2, 0, 0)..)),
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]);
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dependency_provider.add_dependencies("menu", (1, 2, 0), [
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("dropdown", Range::from_range_bounds((2, 0, 0)..)),
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]);
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dependency_provider.add_dependencies("menu", (1, 3, 0), [
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("dropdown", Range::from_range_bounds((2, 0, 0)..)),
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]);
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dependency_provider.add_dependencies("menu", (1, 4, 0), [
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("dropdown", Range::from_range_bounds((2, 0, 0)..)),
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]);
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dependency_provider.add_dependencies("menu", (1, 5, 0), [
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("dropdown", Range::from_range_bounds((2, 0, 0)..)),
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]);
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// Dependencies of the dropdown lib.
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dependency_provider.add_dependencies("dropdown", (1, 8, 0), []);
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dependency_provider.add_dependencies("dropdown", (2, 0, 0), [
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("icons", Range::singleton((2, 0, 0))),
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]);
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dependency_provider.add_dependencies("dropdown", (2, 1, 0), [
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("icons", Range::singleton((2, 0, 0))),
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]);
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dependency_provider.add_dependencies("dropdown", (2, 2, 0), [
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("icons", Range::singleton((2, 0, 0))),
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]);
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dependency_provider.add_dependencies("dropdown", (2, 3, 0), [
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("icons", Range::singleton((2, 0, 0))),
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]);
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// Icons has no dependency.
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dependency_provider.add_dependencies("icons", (1, 0, 0), []);
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dependency_provider.add_dependencies("icons", (2, 0, 0), []);
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// Run the algorithm.
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match resolve(&dependency_provider, "root", (1, 0, 0)) {
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Ok(sol) => println!("{:?}", sol),
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Err(PubGrubError::NoSolution(mut derivation_tree)) => {
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derivation_tree.collapse_no_versions();
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eprintln!("{}", DefaultStringReporter::report(&derivation_tree));
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}
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Err(err) => panic!("{:?}", err),
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};
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}
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