[email protected] (Ludovic Courtès) skribis:
> Initially #:local-build? (aka. ‘preferLocalBuild’) meant “avoid
> offloading this derivation”, but Nix commit 55586527 (June 2013) changed
> it to “avoid offloading *or substituting* this derivation”, which I
> somehow overlooked for all this time.
The relevant code is in libstore/build.cc:
--8<---------------cut here---------------start------------->8---
/* We are first going to try to create the invalid output paths
through substitutes. If that doesn't work, we'll build
them. */
if (settings.useSubstitutes && !willBuildLocally(drv))
foreach (PathSet::iterator, i, invalidOutputs)
addWaitee(worker.makeSubstitutionGoal(*i, buildMode == bmRepair));
--8<---------------cut here---------------end--------------->8---
Ludo’.
