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Diffstat (limited to 'doc/manual/rl-next/inherit-from-by-need.md')
| -rw-r--r-- | doc/manual/rl-next/inherit-from-by-need.md | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/doc/manual/rl-next/inherit-from-by-need.md b/doc/manual/rl-next/inherit-from-by-need.md deleted file mode 100644 index d198cf314..000000000 --- a/doc/manual/rl-next/inherit-from-by-need.md +++ /dev/null @@ -1,9 +0,0 @@ ---- -synopsis: "`inherit (x) ...` evaluates `x` only once" -prs: 9847 -category: Fixes -credits: horrors ---- - -`inherit (x) a b ...` now evaluates the expression `x` only once for all inherited attributes rather than once for each inherited attribute. -This does not usually have a measurable impact, but side-effects (such as `builtins.trace`) would be duplicated and expensive expressions (such as derivations) could cause a measurable slowdown. |