Don't use allowSubstitutes=false #1389
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`runCommandLocal` sets both `preferLocalBuild=true` and `allowSubstitutes=false`. There's an [argument](NixOS/nix#4442) that the latter is a misfeature. There's really no reason not to download something from a substitutor if it's actually been built already. We can get the effect that we want easily enough by just setting `preferLocalBuild=true` alone.
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I tried this while on the track of what ultimately turned out to be #1387, but I think this is still suspicious, and better avoided. |
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bors try |
tryBuild succeeded: |
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runCommandLocalsets bothpreferLocalBuild=trueandallowSubstitutes=false. There's anargument that the latter is a
misfeature. There's really no reason not to download something from a
substitutor if it's actually been built already.
We can get the effect that we want easily enough by just setting
preferLocalBuild=truealone.