feat: Add s expression format to envelope formats#2864
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## main #2864 +/- ##
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- Coverage 83.73% 83.71% -0.03%
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croyzor
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🤖 I have created a release *beep* *boop* --- ## [0.15.2](hugr-py-v0.15.1...hugr-py-v0.15.2) (2026-02-06) ### Features * Add ptr extension and cleanup `hugr.std` module ([#2842](#2842)) ([0871b82](0871b82)) * Add s expression format to envelope formats ([#2864](#2864)) ([2da5e8e](2da5e8e)) * Auto-embed extensions in stored hugrs ([#2843](#2843)) ([36408d4](36408d4)) * Replace pyzstd dependency with rust bindings ([#2846](#2846)) ([5047c81](5047c81)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). --------- Co-authored-by: Agustín Borgna <[email protected]>
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## 🤖 New release * `hugr-model`: 0.25.5 -> 0.25.6 (✓ API compatible changes) * `hugr-core`: 0.25.5 -> 0.25.6 (✓ API compatible changes) * `hugr-llvm`: 0.25.5 -> 0.25.6 (✓ API compatible changes) * `hugr-passes`: 0.25.5 -> 0.25.6 (✓ API compatible changes) * `hugr`: 0.25.5 -> 0.25.6 (✓ API compatible changes) * `hugr-cli`: 0.25.5 -> 0.25.6 (✓ API compatible changes) * `hugr-persistent`: 0.4.5 -> 0.4.6 <details><summary><i><b>Changelog</b></i></summary><p> ## `hugr-model` <blockquote> ## [0.25.6](hugr-model-v0.25.5...hugr-model-v0.25.6) - 2026-02-20 ### New Features - Remove size limitation for binary envelopes ([#2880](#2880)) </blockquote> ## `hugr-core` <blockquote> ## [0.25.6](hugr-core-v0.25.5...hugr-core-v0.25.6) - 2026-02-20 ### Bug Fixes - Canonicalize more ([#2839](#2839)) - used_extensions should include transitive requirements ([#2891](#2891)) ### New Features - Add s expression format to envelope formats ([#2864](#2864)) - added hash.rs, updated imports ([#2840](#2840)) - *(hugr-py)* Define typed Metadata protocol ([#2765](#2765)) - Add a `NodeTemplate::call_to_function` helper ([#2878](#2878)) - Remove size limitation for binary envelopes ([#2880](#2880)) </blockquote> ## `hugr-llvm` <blockquote> ## [0.25.6](hugr-llvm-v0.25.5...hugr-llvm-v0.25.6) - 2026-02-20 ### New Features - Add error context when lowering hugrs to LLVM ([#2869](#2869)) </blockquote> ## `hugr-passes` <blockquote> ## [0.25.6](hugr-passes-v0.25.5...hugr-passes-v0.25.6) - 2026-02-20 ### Bug Fixes - Panic on UntuplePass when nodes had order edges ([#2883](#2883)) ### New Features - added hash.rs, updated imports ([#2840](#2840)) - Add a `NodeTemplate::call_to_function` helper ([#2878](#2878)) </blockquote> ## `hugr` <blockquote> ## [0.25.6](hugr-v0.25.5...hugr-v0.25.6) - 2026-02-20 ### Bug Fixes - Panic on UntuplePass when nodes had order edges ([#2883](#2883)) - Canonicalize more ([#2839](#2839)) - used_extensions should include transitive requirements ([#2891](#2891)) ### New Features - Add s expression format to envelope formats ([#2864](#2864)) - *(hugr-py)* Define typed Metadata protocol ([#2765](#2765)) - Add a `NodeTemplate::call_to_function` helper ([#2878](#2878)) - added hash.rs, updated imports ([#2840](#2840)) - Remove size limitation for binary envelopes ([#2880](#2880)) </blockquote> ## `hugr-cli` <blockquote> ## [0.25.6](hugr-cli-v0.25.5...hugr-cli-v0.25.6) - 2026-02-20 ### New Features - Add s expression format to envelope formats ([#2864](#2864)) </blockquote> ## `hugr-persistent` <blockquote> ## [0.4.0](hugr-persistent-v0.3.4...hugr-persistent-v0.4.0) - 2025-12-22 ### New Features - [**breaking**] Remove `RootCheckable` ([#2704](#2704)) - [**breaking**] Bump MSRV to Rust 1.89 ([#2747](#2747)) - [**breaking**] Type-safe access for node metadata ([#2755](#2755)) ### Refactor - [**breaking**] Remove multiple deprecated definitions ([#2751](#2751)) </blockquote> </p></details> --- This PR was generated with [release-plz](https://github.com/release-plz/release-plz/).
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## 🤖 New release * `hugr-model`: 0.25.6 -> 0.25.7 (✓ API compatible changes) * `hugr-core`: 0.25.6 -> 0.25.7 (✓ API compatible changes) * `hugr-llvm`: 0.25.6 -> 0.25.7 (✓ API compatible changes) * `hugr-passes`: 0.25.6 -> 0.25.7 (✓ API compatible changes) * `hugr-persistent`: 0.4.6 -> 0.4.7 (✓ API compatible changes) * `hugr`: 0.25.6 -> 0.25.7 (✓ API compatible changes) * `hugr-cli`: 0.25.6 -> 0.25.7 (✓ API compatible changes) <details><summary><i><b>Changelog</b></i></summary><p> ## `hugr-model` <blockquote> ## [0.25.6](hugr-model-v0.25.5...hugr-model-v0.25.6) - 2026-02-20 ### New Features - Remove size limitation for binary envelopes ([#2880](#2880)) </blockquote> ## `hugr-core` <blockquote> ## [0.25.7](hugr-core-v0.25.6...hugr-core-v0.25.7) - 2026-03-06 ### Documentation - added examples in docs srtring ([#2920](#2920)) </blockquote> ## `hugr-llvm` <blockquote> ## [0.25.6](hugr-llvm-v0.25.5...hugr-llvm-v0.25.6) - 2026-02-20 ### New Features - Add error context when lowering hugrs to LLVM ([#2869](#2869)) </blockquote> ## `hugr-passes` <blockquote> ## [0.25.7](hugr-passes-v0.25.6...hugr-passes-v0.25.7) - 2026-03-06 ### Documentation - added examples in docs srtring ([#2920](#2920)) ### New Features - Define pass application scopes ([#2772](#2772)) - Modify dead code elimination pass to remove unreachable basic blocks ([#2884](#2884)) - Add non-generic `with_scope` method for composable passes ([#2910](#2910)) - update passes to use PassScope where non-breaking ([#2836](#2836)) </blockquote> ## `hugr-persistent` <blockquote> ## [0.4.0](hugr-persistent-v0.3.4...hugr-persistent-v0.4.0) - 2025-12-22 ### New Features - [**breaking**] Remove `RootCheckable` ([#2704](#2704)) - [**breaking**] Bump MSRV to Rust 1.89 ([#2747](#2747)) - [**breaking**] Type-safe access for node metadata ([#2755](#2755)) ### Refactor - [**breaking**] Remove multiple deprecated definitions ([#2751](#2751)) </blockquote> ## `hugr` <blockquote> ## [0.25.7](hugr-v0.25.6...hugr-v0.25.7) - 2026-03-06 ### Documentation - added examples in docs srtring ([#2920](#2920)) ### New Features - Define pass application scopes ([#2772](#2772)) - Modify dead code elimination pass to remove unreachable basic blocks ([#2884](#2884)) - Add non-generic `with_scope` method for composable passes ([#2910](#2910)) - update passes to use PassScope where non-breaking ([#2836](#2836)) </blockquote> ## `hugr-cli` <blockquote> ## [0.25.6](hugr-cli-v0.25.5...hugr-cli-v0.25.6) - 2026-02-20 ### New Features - Add s expression format to envelope formats ([#2864](#2864)) </blockquote> </p></details> --- This PR was generated with [release-plz](https://github.com/release-plz/release-plz/).
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Adds
EnvelopeFormat._S_EXPRESSIONandEnvelopeFormat._S_EXPRESSION_WITH_EXTSto the available envelope formats in python.These are not stable, and will fail a serialization roundtrip in some cases (hence the
_prefix).I added the formats to the validation list in
conftest, but this causes ~15 tests to fail due to errors in the s expression encoding/decoding itself.I'm not addressing those here, so I commented out the format test for now.
I chose to rename these from
ModelTexttoSExpression, to avoid confusion with the binary formatModel.I added the alias to the
hugr-cliarguments, but the old names are still supported.