chore: release v0.16.0

[hugrbot]

🤖 New release

• portgraph: 0.15.3 -> 0.16.0 (⚠ API breaking changes)

⚠ portgraph breaking changes

--- failure enum_variant_missing: pub enum variant removed or renamed ---

Description:
A publicly-visible enum has at least one variant that is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/enum_variant_missing.ron

Failed in:
  variant NodeStyle::Box, previously in file /tmp/.tmp7sGcr1/portgraph/src/render.rs:70

--- failure function_requires_different_generic_type_params: function now requires a different number of generic type parameters ---

Description:
A function now requires a different number of generic type parameters than it used to. Uses of this function that supplied the previous number of generic types (e.g. via turbofish syntax) will be broken.
        ref: https://doc.rust-lang.org/reference/items/generics.html
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/function_requires_different_generic_type_params.ron

Failed in:
  function postorder (0 -> 3 generic types) in /tmp/.tmpP8lCNU/portgraph/src/algorithms/post_order.rs:54
  function dominators_filtered (1 -> 4 generic types) in /tmp/.tmpP8lCNU/portgraph/src/algorithms/dominators.rs:110
  function dominators (1 -> 4 generic types) in /tmp/.tmpP8lCNU/portgraph/src/algorithms/dominators.rs:47
  function postorder_filtered (0 -> 3 generic types) in /tmp/.tmpP8lCNU/portgraph/src/algorithms/post_order.rs:124
  function lca (0 -> 1 generic types) in /tmp/.tmpP8lCNU/portgraph/src/algorithms/lca.rs:15

--- failure inherent_associated_pub_const_missing: inherent impl's associated pub const removed ---

Description:
An inherent impl's associated public constant is removed or renamed
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/inherent_associated_pub_const_missing.ron

Failed in:
  MaybeNodeIndex::NONE, previously at /tmp/.tmp7sGcr1/portgraph/src/index.rs:288

--- failure inherent_method_const_removed: pub method is no longer const ---

Description:
A publicly-visible method or associated fn is no longer `const` and can no longer be used in a `const` context.
        ref: https://doc.rust-lang.org/reference/const_eval.html
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/inherent_method_const_removed.ron

Failed in:
  Hierarchy::new in /tmp/.tmpP8lCNU/portgraph/src/hierarchy.rs:80
  Hierarchy::new in /tmp/.tmpP8lCNU/portgraph/src/hierarchy.rs:80

--- failure inherent_method_missing: pub method removed or renamed ---

Description:
A publicly-visible method or associated fn is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/inherent_method_missing.ron

Failed in:
  FlatRegion::new, previously in file /tmp/.tmp7sGcr1/portgraph/src/view/flat_region.rs:39
  NodeStyle::new, previously in file /tmp/.tmp7sGcr1/portgraph/src/render.rs:84

--- failure trait_associated_type_added: non-sealed public trait added associated type without default value ---

Description:
A non-sealed trait has gained an associated type without a default value, which breaks downstream implementations of the trait
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-item-no-default
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/trait_associated_type_added.ron

Failed in:
  trait associated type portgraph::view::PortView::NodeIndexBase in file /tmp/.tmpP8lCNU/portgraph/src/view.rs:28
  trait associated type portgraph::view::PortView::PortIndexBase in file /tmp/.tmpP8lCNU/portgraph/src/view.rs:30
  trait associated type portgraph::PortView::NodeIndexBase in file /tmp/.tmpP8lCNU/portgraph/src/view.rs:28
  trait associated type portgraph::PortView::PortIndexBase in file /tmp/.tmpP8lCNU/portgraph/src/view.rs:30
  trait associated type portgraph::algorithms::convex::ConvexChecker::NodeIndexBase in file /tmp/.tmpP8lCNU/portgraph/src/algorithms/convex.rs:35
  trait associated type portgraph::algorithms::convex::ConvexChecker::PortIndexBase in file /tmp/.tmpP8lCNU/portgraph/src/algorithms/convex.rs:37
  trait associated type portgraph::algorithms::ConvexChecker::NodeIndexBase in file /tmp/.tmpP8lCNU/portgraph/src/algorithms/convex.rs:35
  trait associated type portgraph::algorithms::ConvexChecker::PortIndexBase in file /tmp/.tmpP8lCNU/portgraph/src/algorithms/convex.rs:37

--- failure trait_missing: pub trait removed or renamed ---

Description:
A publicly-visible trait cannot be imported by its prior path. A `pub use` may have been removed, or the trait itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/trait_missing.ron

Failed in:
  trait portgraph::index::Unsigned, previously in file /tmp/.tmp7sGcr1/portgraph/src/index.rs:434

--- failure trait_requires_more_generic_type_params: trait now requires more generic type parameters ---

Description:
A trait now requires more generic type parameters than it used to. Uses of this trait that supplied the previously-required number of generic types will be broken. To fix this, consider supplying default values for newly-added generic types.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-parameter-no-default
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/trait_requires_more_generic_type_params.ron

Failed in:
  trait NodeConnections (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/portgraph/iter.rs:514
  trait Nodes (0 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/portgraph/iter.rs:230
  trait NodeSubports (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/multiportgraph/iter.rs:147
  trait NodeLinks (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/multiportgraph/iter.rs:292
  trait NodeConnections (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/multiportgraph/iter.rs:345
  trait Neighbours (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/portgraph/iter.rs:466
  trait EdgeRef (1 -> 2 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/view/petgraph.rs:334
  trait Neighbours (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/multiportgraph/iter.rs:212
  trait Descendants (0 -> 1 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/hierarchy.rs:664
  trait PostOrder (0 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/algorithms/post_order.rs:144
  trait Ports (0 -> 2 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/portgraph/iter.rs:288
  trait Nodes (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/multiportgraph/iter.rs:95
  trait NodePorts (0 -> 1 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/portgraph/iter.rs:167
  trait Children (0 -> 1 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/hierarchy.rs:600
  trait NodeLinks (0 -> 1 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/portgraph/iter.rs:402
  trait Ports (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/multiportgraph/iter.rs:514
  trait PortLinks (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/multiportgraph/iter.rs:385

--- failure type_requires_more_generic_type_params: type now requires more generic type parameters ---

Description:
A type now requires more generic type parameters than it used to. Uses of this type that supplied the previously-required number of generic types will be broken. To fix this, consider supplying default values for newly-added generic types.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-parameter-no-default
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/type_requires_more_generic_type_params.ron

Failed in:
  Struct NodeConnections (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/portgraph/iter.rs:514
  Struct Nodes (0 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/portgraph/iter.rs:230
  Struct NodeSubports (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/multiportgraph/iter.rs:147
  Struct NodeLinks (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/multiportgraph/iter.rs:292
  Struct NodeConnections (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/multiportgraph/iter.rs:345
  Struct Neighbours (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/portgraph/iter.rs:466
  Struct EdgeRef (1 -> 2 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/view/petgraph.rs:334
  Struct Neighbours (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/multiportgraph/iter.rs:212
  Struct Descendants (0 -> 1 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/hierarchy.rs:664
  Struct PostOrder (0 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/algorithms/post_order.rs:144
  Struct Ports (0 -> 2 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/portgraph/iter.rs:288
  Struct Nodes (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/multiportgraph/iter.rs:95
  Struct NodePorts (0 -> 1 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/portgraph/iter.rs:167
  Struct Children (0 -> 1 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/hierarchy.rs:600
  Struct NodeLinks (0 -> 1 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/portgraph/iter.rs:402
  Struct Ports (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/multiportgraph/iter.rs:514
  Enum PortLinks (1 -> 3 required generic types) in /tmp/.tmpP8lCNU/portgraph/src/multiportgraph/iter.rs:385

Changelog

0.16.0 - 2026-03-30

Bug Fixes

• [breaking] NodeMeta and PortMeta should be generic (#283)

Documentation

• document canonical order in toposort for nodes of the same rank (#280)

New Features

• [breaking] Support parametric node and port types everywhere (#284)
• [breaking] Remove deprecated definitions (#285)

---

This PR was generated with release-plz.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.06%. Comparing base (19d52d8) to head (080b2ef).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #272   +/-   ##
=======================================
  Coverage   83.06%   83.06%           
=======================================
  Files          30       30           
  Lines        7670     7670           
  Branches     7670     7670           
=======================================
  Hits         6371     6371           
  Misses       1199     1199           
  Partials      100      100           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.