chore: release v0.20.1

[hugrbot]

🤖 New release

• hugr-model: 0.20.0 -> 0.20.1
• hugr-core: 0.20.0 -> 0.20.1 (✓ API compatible changes)
• hugr-llvm: 0.20.0 -> 0.20.1 (✓ API compatible changes)
• hugr-passes: 0.20.0 -> 0.20.1 (✓ API compatible changes)
• hugr: 0.20.0 -> 0.20.1 (✓ API compatible changes)
• hugr-cli: 0.20.0 -> 0.20.1 (✓ API compatible changes)

Changelog

hugr-model

0.20.0 - 2025-05-14

New Features

• [breaking] Mark all Error enums as non_exhaustive (#2056)
• [breaking] Bump MSRV to 1.85 (#2136)
• Export and import entrypoints via metadata in hugr-model. (#2172)
• Define text-model envelope formats (#2188)
• Import CFG regions without adding an entry block. (#2200)
• Symbol applications can leave out prefixes of wildcards. (#2201)

hugr-core

0.20.1 - 2025-06-03

Bug Fixes

• check well-definedness of DFG wires in validate (#2221)
• Check for order edges in SiblingSubgraph::from_node (#2223)
• Make SumType::Unit(N) equal to SumType::General([(); N]) (#2250)
• canonicalize_nodes sometimes mangles the entrypoint (#2263)

New Features

• Add PersistentHugr (#2080)
• Add Type::used_extensions (#2224)
• Add boundary edge traversal in SimpleReplacement (#2231)
• Add signature map function for DFGs (#2239)
• PersistentHugr implements HugrView (#2202)
• PersistentHugr Walker API (#2168)
• Hugr::store_with_exts and auto-include in serde_as (#2280)

Refactor

• tidies/readability improvements to PersistentHugr (#2251)
• Deprecate ValidationError::ExtensionError (#2281)

Testing

• Ignore miri errors in tests involving assert_snapshot (#2261)

hugr-llvm

0.20.1 - 2025-06-03

Bug Fixes

• Make SumType::Unit(N) equal to SumType::General([(); N]) (#2250)

Testing

• Add exec tests for widen op (#2043)

hugr-passes

0.20.1 - 2025-06-03

Bug Fixes

• Dataflow analysis produces unsound results on Hugrs with entrypoint (#2255)

New Features

• LocalizeEdges pass (#2237)

hugr

0.20.1 - 2025-06-03

Bug Fixes

• Dataflow analysis produces unsound results on Hugrs with entrypoint (#2255)
• check well-definedness of DFG wires in validate (#2221)
• Check for order edges in SiblingSubgraph::from_node (#2223)
• Make SumType::Unit(N) equal to SumType::General([(); N]) (#2250)
• canonicalize_nodes sometimes mangles the entrypoint (#2263)

New Features

• LocalizeEdges pass (#2237)
• Add PersistentHugr (#2080)
• Add Type::used_extensions (#2224)
• Add boundary edge traversal in SimpleReplacement (#2231)
• Add signature map function for DFGs (#2239)
• PersistentHugr implements HugrView (#2202)
• PersistentHugr Walker API (#2168)
• Hugr::store_with_exts and auto-include in serde_as (#2280)

Refactor

• tidies/readability improvements to PersistentHugr (#2251)
• Deprecate ValidationError::ExtensionError (#2281)

Testing

• Ignore miri errors in tests involving assert_snapshot (#2261)

hugr-cli

0.20.1 - 2025-06-03

New Features

• support external subcommands via PATH (#1343) (#2278)

---

This PR was generated with release-plz.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.33%. Comparing base (f8b6d25) to head (a4b86b9).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2273   +/-   ##
=======================================
  Coverage   82.33%   82.33%           
=======================================
  Files         240      240           
  Lines       43577    43577           
  Branches    39488    39488           
=======================================
  Hits        35881    35881           
  Misses       5701     5701           
  Partials     1995     1995           

Flag	Coverage Δ
python	85.39% <ø> (ø)
rust	82.02% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ 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.