I think this fixes the [nondeterminism
observed](Quantinuum/tket2#1325 (comment))
in tket2#1325. (I updated tket2/Cargo.toml to use this branch, then ran
`uv clean && uv pip install --reinstall tket selene-hugr-qis-compiler &&
uv sync` and that changed tests from failing to passing).

Not sure I completely understand the mechanism - this appears to change
only the order in which we add (all the outgoing edges from a node) for
each node (not the order of outgoing edges for each), which AFAICS
should have no effect. But....let's try....

Depends on the unreleased `hugr 0.25.0`

Requires #1325

So following #1325 I was finally able to (/finally succeeded) in
evaluating the effect of Quantinuum/hugr#2749 on
guppy tests. (There was some question on that PR as to whether we needed
to add new facility, see #2766; here is the data.)

Three tests were affected (indeed the same ones as were broken and then
fixed by Quantinuum/hugr#2779 but that is a
separate issue). The sizes of the LLVM output as follows:

| | Original (hugr 0.24.3) | Hugr
0.25+[fix](Quantinuum/hugr#2779) | Hugr
0.25+[fix](Quantinuum/hugr#2779) + this PR |
|----|----|----|----|
| [new test](Quantinuum/guppylang#1411) | 9568 |
11856 | 9888 |
| basic_type | 10224 | 11616 | 10400 |
| notebook2 | 15680 | 17184 | 15936 |
| notebook5 (Hugr 1) | 10832 | 12304 | 11072 |
| notebook5 (Hugr 2) | 10480 | 11840 | 10656 |

Inspection of the hugrs in the middle row revealed the helper functions
from Quantinuum/hugr#2749 were indeed present in
the LLVM output as `define` (not `define private`). Hence, this PR,
following which LLVM is able to remove the `define`s. (I have not looked
into the remaining +2-3% increase. (The numbers include many other
changes between hugr-0.24.3 and hugr-0.25.0.)

🤖 I have created a release *beep* *boop*
---


##
[0.12.14](tket-py-v0.12.13...tket-py-v0.12.14)
(2026-01-15)


### Features

* make PytketHugrPass store a list of passes
([#1360](#1360))
([498dd3a](498dd3a))
* Reduced glibc version requirement to 2.34
([#1327](#1327))
([498dd3a](498dd3a))
* Remove order edges in NormalizeGuppy pass
([#1326](#1326))
([dbfffd5](dbfffd5)),
closes [#1325](#1325)
* Use constant folding by default on NormalizeGuppy
([#1323](#1323))
([6f11024](6f11024))


### Bug Fixes

* Incorrect manylinux version in linux wheels
([#1327](#1327))
([498dd3a](498dd3a))
* Wrongly reused qubit IDs in pytket encoding
([#1358](#1358))
([498dd3a](498dd3a))


### Documentation

* update example notebook after Guppy optimization fixes
([#1357](#1357))
([7487e3a](7487e3a))

---
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]>

## 🤖 New release

* `tket`: 0.16.0 -> 0.17.0 (✓ API compatible changes)
* `tket-qsystem`: 0.22.0 -> 0.23.0 (✓ API compatible changes)

<details><summary><i><b>Changelog</b></i></summary><p>

## `tket`

<blockquote>

##
[0.17.0](tket-v0.16.0...tket-v0.17.0)
- 2026-02-02

### Bug Fixes

- *(encoded-circ)* Track unsupported wires between input and output
([#1224](#1224))
- Multiple fixes to the pytket encoder
([#1226](#1226))
- Don't use opgroup in pytket barrier encoding
([#1251](#1251))
- guppy_to_circuit always returns num_operations = 0
([#1200](#1200))
- *(pytket-decoder)* Avoid QAllocating and immediately freeing qubits
([#1256](#1256))
- Encoding of opaque subgraphs with no associated qubit/bit
([#1295](#1295))
- [**breaking**] Don't rely on command params for pytket barriers
([#1298](#1298))
- Track output qubits in CircuitInfo
([#1304](#1304))
- Wrongly reused qubit IDs in pytket encoding
([#1358](#1358))

### New Features

- Deprecate local find_tuple_unpack rewrite
([#1188](#1188))
- Add CopyableExpressionAST
([#1209](#1209))
- `NormalizeGuppy` pass to simplify generated structure
([#1220](#1220))
- [**breaking**] pytket EncodedCircuit struct for in-place pytket
optimisation ([#1211](#1211))
- [**breaking**] Interval is independent of resource IDs and scope
position ([#1205](#1205))
- Don't translate usizes to pytket
([#1241](#1241))
- BorrowSquashPass to elide redundant borrow/return ops
([#1159](#1159))
- [**breaking**] Bump hugr to 0.25.0
([#1325](#1325))
- Remove order edges in NormalizeGuppy pass
([#1326](#1326))
- [**breaking**] Remove deprecated unpack tuple pass
([#1387](#1387))

### Refactor

- Remove contain_qubits, use TypeUnpacker
([#1283](#1283))
- [**breaking**] Replace Subcircuit with SiblingSubgraph
([#1288](#1288))
- *(metadata)* [**breaking**] Migrate all metadata keys onto the new
metadata traits ([#1328](#1328))
</blockquote>

## `tket-qsystem`

<blockquote>

##
[0.23.0](tket-qsystem-v0.22.0...tket-qsystem-v0.23.0)
- 2026-02-02

### Bug Fixes

- [**breaking**] Don't rely on command params for pytket barriers
([#1298](#1298))
- Wrongly reused qubit IDs in pytket encoding
([#1358](#1358))

### New Features

- `NormalizeGuppy` pass to simplify generated structure
([#1220](#1220))
- Allow running arbitrary serializable pytket passes on hugrs
([#1266](#1266))
- BorrowSquashPass to elide redundant borrow/return ops
([#1159](#1159))
- [**breaking**] Bump hugr to 0.25.0
([#1325](#1325))
- Remove order edges in NormalizeGuppy pass
([#1326](#1326))
- hide new public funcs introduced by linearization
([#1333](#1333))

### Testing

- regenerate guppy_opt examples, and count gates
([#1249](#1249))
- run pytket on guppy_opt tests, measure (very limited) success
([#1250](#1250))
</blockquote>


</p></details>

---
This PR was generated with
[release-plz](https://github.com/release-plz/release-plz/).

Reverted in Quantinuum#1325 due to a bug in hugr, now fixed in `0.25.2`.

The change in `unpack_container` seems to cause issues since we are not
lowering operations defined in the templates themselves recursively.

---------

Co-authored-by: Alan Lawrence <[email protected]>