pennae 79d3d412ca optimize derivation string parsing ... a bunch of derivation strings contain no escape sequences. we can optimize for this fact by first scanning for the end of a derivation string and simply returning the contents unmodified if no escape sequences were found. to make this even more efficient we can also use BackedStringViews to avoid copies, avoiding heap allocations for transient data. before: Benchmark 1: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system' Time (mean ± σ): 6.952 s ± 0.015 s [User: 5.294 s, System: 1.452 s] Range (min … max): 6.926 s … 6.974 s 10 runs after: Benchmark 1: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system' Time (mean ± σ): 6.907 s ± 0.012 s [User: 5.272 s, System: 1.429 s] Range (min … max): 6.893 s … 6.926 s 10 runs		2023-12-30 18:44:10 +01:00
..
internal-api	Split --disable-tests, fix cross builds	2023-12-18 10:47:50 -05:00
manual	optimize derivation string parsing	2023-12-30 18:44:10 +01:00