- ESOLID, an “exact solid modeling” library from Texas A&M (John Keyser), was being evaluated for open-source CAD use; it performs exact Boolean operations on boundary-representations (B-reps) but lacks a clear license and STEP-file support.  
- Kanzure had already written a ~30 % complete Python/SWIG rewrite of ESOLID and posted timing tests and screenshots of NURBS Boolean results (union vs. difference of a box and a cylinder).  
- Discussion centered on how to test and extend the code: options included (1) continuing the full Python rewrite, (2) writing a thin wrapper around the original C++ library, (3) using the wrapper to validate the rewrite, or (4) creating unit tests by hard-coding expected geometric results.  
- QuantumG advised deterministic testing practices—monotonically increasing object IDs and eliminating nondeterministic containers—to make debugging large geometric code bases tractable.  
- Fenn raised the practical question of whether ESOLID can import arbitrary B-reps (it can, but only via its own format), stressing the need for STEP or other standard CAD import paths for real-world usability.  
- Server logistics: the gnusha.org host (and thus the channel’s logs, git repos, and ikiwiki) was being migrated; several hours of downtime were accepted to tar and transfer data to a more stable machine (neuroblastoma.cs.pdx.edu).