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Casting a line into Guppy's depths

An ongoing log of everything I'm discovering about Guppy — a quantum programming language built by Quantinuum.

Recent Activity

PR Thu Mar 27 view PR

PR #1589 docs: Improve docstrings for angles.py

PR Fri Mar 13 view PR

PR #1551 fix: Nested modifier propagation

Q-Net Fri Mar 13

Q-Net Connect 2026: Day 2: Various Talks

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// quantum circuit — 3 qubits

Pull Requests · Post #12

PR #1589: Clearer Docstrings for the Angle Type

Improved the docstring for Guppy's angle class to explicitly document the half-turns convention, clarify the relationship to radians, and note that angles do not wrap around.

Mar 27, 2026 ~2 min read

Recent Pull Requests

Pull Requests · #11

PR #1551: Fixing Nested Modifier Propagation

Fixed a bug where nested with modifier blocks (dagger, control, power) silently ignored outer modifier constraints instead of correctly propagating them through the compilation pipeline.

Mar 13, 2026 · 3 min Read ↗

Pull Requests · #10

PR #1527: Clearer Errors When Misusing Guppy Objects in comptime()

Added a dedicated error diagnostic for using Guppy functions or types inside comptime() expressions, replacing raw Python tracebacks with a message that explains the problem and how to fix it.

Feb 27, 2026 · 2 min Read ↗

Pull Requests · #9

PR #1496: Fixing WASM Module Path Resolution

Fixed a file system bug where Guppy looked for WASM modules relative to the current working directory instead of the source file's location, breaking Jupyter notebook workflows.

Feb 18, 2026 · 2 min Read ↗