| 20 Jun 2026 |
|  Nikita Mikhailov joined the room. | 12:15:06 |
| 21 Jun 2026 |
 llakala | https://github.com/NixOS/nix/blob/f8bb823a23bf6d62f4c8feb792a77702d7a49fe1/src/libexpr/primops.cc#L3276 | 12:59:08 |
| llakala | might it be more performant to loop twice through the attrs - once calculating the number of attrs that actually exist, and the second time actually copying their values? | 12:59:45 |
| llakala | i say this because this removeAttrs has consistently shown up in my nixpkgs profiling | 13:02:25 |
| llakala | there's a lot of names to remove
removedOrReplacedAttrNames = [
"checkInputs"
"installCheckInputs"
"nativeCheckInputs"
"nativeInstallCheckInputs"
"__contentAddressed"
"__darwinAllowLocalNetworking"
"__impureHostDeps"
"__propagatedImpureHostDeps"
"sandboxProfile"
"propagatedSandboxProfile"
"disallowedReferences"
"disallowedRequisites"
"allowedReferences"
"allowedRequisites"
"allowedImpureDLLs"
];
| 13:02:50 |
| llakala | * there's a lot of names to remove on every mkDerivation
removedOrReplacedAttrNames = [
"checkInputs"
"installCheckInputs"
"nativeCheckInputs"
"nativeInstallCheckInputs"
"__contentAddressed"
"__darwinAllowLocalNetworking"
"__impureHostDeps"
"__propagatedImpureHostDeps"
"sandboxProfile"
"propagatedSandboxProfile"
"disallowedReferences"
"disallowedRequisites"
"allowedReferences"
"allowedRequisites"
"allowedImpureDLLs"
];
| 13:02:57 |
 Sergei Zimmerman (xokdvium) | We can do a better filterAttrs, but I don’t think those showed any improvements | 14:21:00 |
| 22 Jun 2026 |
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| 19 May 2021 |
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