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4ffea8eb91
Crystal runs CPU detection to figure out worker count if not explicitly set. This detection code has a bug and errors on machines with >= 128 CPUs, since it uses an 8 bit integer for counting CPUs. Large CPU counts do work if the CPU detection code is skipped. This sets CRYSTAL_WORKERS to NIX_BUILD_CORES to avoid the CPU detection code. Assisted-by: Codex (GPT-5.6 Sol)