fix(internals): Act upon and resolve Python 3.15 AST deprecations

[qartik]

Closes #1316.

Resolves warnings like these:

guppylang_internals/nodes.py:52: DeprecationWarning: Field 'def_id' is missing from GlobalName._field_types. This will become an error in Python 3.15.
    super().__init__(id=id)

guppylang_internals/nodes.py:79: DeprecationWarning: Field 'var' is missing from DummyGenericParamValue._field_types. This will become an error in Python 3.15.
    super().__init__(id=id)

guppylang_internals/nodes.py:718: DeprecationWarning: Dagger.__init__ got an unexpected keyword argument 'source'. Support for arbitrary keyword arguments is deprecated and will be removed in Python 3.15.
    super().__init__(**node.__dict__)

guppylang_internals/nodes.py:734: DeprecationWarning: Control.__init__ got an unexpected keyword argument 'func'. Support for arbitrary keyword arguments is deprecated and will be removed in Python 3.15.
    super().__init__(**node.__dict__)

guppylang_internals/nodes.py:734: DeprecationWarning: Field 'ctrl' is missing from Control._field_types. This will become an error in Python 3.15.
    super().__init__(**node.__dict__)

guppylang_internals/nodes.py:677: DeprecationWarning: NestedFunctionDef.__init__ got an unexpected keyword argument 'docstring'. Support for arbitrary keyword arguments is deprecated and will be removed in Python 3.15.
    super().__init__(*args, **kwargs)

Summary

• add guarded _field_types handling for custom ast.Name, ast.Call, and ast.FunctionDef subclasses in guppylang_internals.nodes
• pass custom AST fields through base constructors where Python 3.15 now validates them
• stop cloning modifier nodes via super().__init__(**node.__dict__) for Dagger, Control, and Power
• preserve source-location metadata explicitly with set_location_from(...)

Why

Python 3.14 warns about AST constructor patterns that will become errors in Python 3.15, including:

• custom fields missing from _field_types
• arbitrary keyword arguments passed into AST constructors

This change updates the affected custom AST nodes in guppylang_internals.nodes so they no longer rely on deprecated constructor behavior.

Validation

• uv run pytest -W default::DeprecationWarning

Notes

The only remaining DeprecationWarning entries from the full test run are Python stdlib multiprocessing fork() warnings in tests/test_guppy_decoupled.py, not AST-node warnings from Guppy.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.49%. Comparing base (f8cf7bb) to head (a5af57f).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1668      +/-   ##
==========================================
- Coverage   93.55%   93.49%   -0.07%     
==========================================
  Files         133      133              
  Lines       12641    12704      +63     
==========================================
+ Hits        11826    11877      +51     
- Misses        815      827      +12     

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[github-actions]

Bencher Report

Branch	ks-fix-ast-name-field-types
Testbed	Linux

🚨 1 Alert

Benchmark	Measure Units	View	Benchmark Result (Result Δ%)	Upper Boundary (Limit %)
tests/benchmarks/test_big_array.py::test_big_array_executable	Latency seconds (s)	📈 plot 🚷 threshold 🚨 alert (🔔)	8.98 s (+6.97%) Baseline: 8.39 s	8.81 s (101.87%)

Click to view all benchmark results

Benchmark	Latency	Benchmark Result microseconds (µs) (Result Δ%)	Upper Boundary microseconds (µs) (Limit %)
tests/benchmarks/test_big_array.py::test_big_array_check	📈 view plot 🚷 view threshold	730,910.49 µs (-25.73%) Baseline: 984,129.13 µs	1,033,335.59 µs (70.73%)
tests/benchmarks/test_big_array.py::test_big_array_compile	📈 view plot 🚷 view threshold	1,899,637.98 µs (-8.61%) Baseline: 2,078,618.41 µs	2,182,549.33 µs (87.04%)
tests/benchmarks/test_big_array.py::test_big_array_executable	📈 view plot 🚷 view threshold 🚨 view alert (🔔)	8,975,211.90 µs (+6.97%) Baseline: 8,390,703.26 µs	8,810,238.43 µs (101.87%)
tests/benchmarks/test_ctrl_flow.py::test_many_ctrl_flow_check	📈 view plot 🚷 view threshold	103,280.59 µs (-3.51%) Baseline: 107,041.03 µs	112,393.08 µs (91.89%)
tests/benchmarks/test_ctrl_flow.py::test_many_ctrl_flow_compile	📈 view plot 🚷 view threshold	214,098.36 µs (-7.17%) Baseline: 230,622.97 µs	242,154.12 µs (88.41%)
tests/benchmarks/test_ctrl_flow.py::test_many_ctrl_flow_executable	📈 view plot 🚷 view threshold	982,064.79 µs (-19.52%) Baseline: 1,220,334.81 µs	1,281,351.55 µs (76.64%)
tests/benchmarks/test_prelude.py::test_import_guppy	📈 view plot 🚷 view threshold	44.47 µs (-14.43%) Baseline: 51.97 µs	54.57 µs (81.50%)
tests/benchmarks/test_queue_push_pop.py::test_queue_push_benchmark	📈 view plot 🚷 view threshold	481,824.42 µs (+3.85%) Baseline: 463,977.09 µs	487,175.94 µs (98.90%)
tests/benchmarks/test_queue_push_pop.py::test_queue_push_pop_benchmark	📈 view plot 🚷 view threshold	640,689.19 µs (+4.03%) Baseline: 615,868.92 µs	646,662.37 µs (99.08%)

🐰 View full continuous benchmarking report in Bencher

[ss2165]

@qartik Does this address #1316?

[qartik]

@qartik Does this address #1316?

It doesn't, but I can expand this PR to handle those warnings as well.

I noticed the warnings covered in this PR on the internal compiler's tests. Updated the PR desc to be more explicit.

[github-actions]

Bencher Report

Branch	ks-fix-ast-name-field-types
Testbed	Linux

Click to view all benchmark results

Benchmark	hugr_bytes	Benchmark Result bytes x 1e3 (Result Δ%)	Upper Boundary bytes x 1e3 (Limit %)	hugr_nodes	Benchmark Result nodes x 1e3 (Result Δ%)	Upper Boundary nodes x 1e3 (Limit %)
tests/benchmarks/test_big_array.py::test_big_array_compile	📈 view plot 🚷 view threshold	158.77 x 1e3 (0.00%) Baseline: 158.77 x 1e3	160.36 x 1e3 (99.01%)	📈 view plot 🚷 view threshold	6.64 x 1e3 (0.00%) Baseline: 6.64 x 1e3	6.71 x 1e3 (99.01%)
tests/benchmarks/test_ctrl_flow.py::test_many_ctrl_flow_compile	📈 view plot 🚷 view threshold	27.53 x 1e3 (0.00%) Baseline: 27.53 x 1e3	27.81 x 1e3 (99.01%)	📈 view plot 🚷 view threshold	1.07 x 1e3 (0.00%) Baseline: 1.07 x 1e3	1.08 x 1e3 (99.01%)

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