While "One Lie" might be a play on words, there is a technical library called that deals with Numerical Lie-theory in C++ and Python.
Used for integrating Schrodinger equations and other differential equations on Lie groups. What’s New — xarray 0.7.0 documentation One Lie [v0.5.2]
This version preceded major plotting module enhancements and served as a stable base before the transition to v0.6.0 and beyond . While "One Lie" might be a play on
Backporting patches to resolve crashes and performance regressions in DirectDraw applications. 2. Kerbal Space Program (KSP) Modding: Sterling Systems One Lie [v0.5.2]