nix-perf
Use this when a flake's nix develop / direnv allow / nix flake archive is slow on a fresh checkout (the "first time takes 10 minutes" complaint). Diagnoses where the time actually lives and how to shrink the flake.lock input graph without changing build outputs.
Pinned to revision 9103a78ecf61, so it is the text this page describes rather than whatever the author pushed since.
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