forked from lix-project/lix
4b2b0d3a55
turns out it's only necessary for MANUAL_VDB, which nix doesn't use. omitting
them gives a slight performance improvement on eval.
before:
Benchmark 1: nix flakes search --no-eval-cache --offline ../nixpkgs hello
Time (mean ± σ): 6.988 s ± 0.061 s [User: 5.935 s, System: 0.845 s]
Range (min … max): 6.865 s … 7.075 s 20 runs
Benchmark 2: nix flakes eval -f ../nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix
Time (mean ± σ): 332.6 ms ± 3.9 ms [User: 299.6 ms, System: 32.9 ms]
Range (min … max): 328.1 ms … 339.1 ms 20 runs
Benchmark 3: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
Time (mean ± σ): 2.681 s ± 0.049 s [User: 2.382 s, System: 0.228 s]
Range (min … max): 2.607 s … 2.776 s 20 runs
after:
Benchmark 1: nix flakes search --no-eval-cache --offline ../nixpkgs hello
Time (mean ± σ): 6.946 s ± 0.041 s [User: 5.875 s, System: 0.835 s]
Range (min … max): 6.834 s … 7.005 s 20 runs
Benchmark 2: nix flakes eval -f ../nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix
Time (mean ± σ): 330.3 ms ± 2.5 ms [User: 299.2 ms, System: 30.9 ms]
Range (min … max): 327.5 ms … 337.7 ms 20 runs
Benchmark 3: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
Time (mean ± σ): 2.671 s ± 0.035 s [User: 2.370 s, System: 0.232 s]
Range (min … max): 2.597 s … 2.749 s 20 runs
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|---|---|---|
| .. | ||
| build-remote | ||
| libcmd | ||
| libexpr | ||
| libfetchers | ||
| libmain | ||
| libstore | ||
| libutil | ||
| nix | ||
| nix-build | ||
| nix-channel | ||
| nix-collect-garbage | ||
| nix-copy-closure | ||
| nix-env | ||
| nix-instantiate | ||
| nix-store | ||
| resolve-system-dependencies | ||
| toml11 | ||