| Commit message (Collapse) | Author | Age |
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This is like callPackageWith, except that it expects the supplied
function to return a *set* of packages. It will then make the
individual packages overridable.
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It's unused, and also a bad idea: because it recursively recomputes
every function argument and there is no sharing, you can get an
exponential (?) blowup in evaluation time. For example, evaluating
‘linuxPackages.kernel’ takes 0.09s and ~13 MiB, but evaluating
‘linuxPackages.kernel.deepOverride {}’ takes 3.6s and ~305 MiB.
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This reverts commit 25a148fa196b944b3f134527da87e43d88c066f9.
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It now strictly evaluates all remaining attributes, preventing
unevaluated thunks that cannot be garbage-collected. It's also applied
to all jobs in Nixpkgs' release.nix.
This reduces hydra-eval-jobs' memory consumption on the 14.12
release-combined jobset from 5.1 GB to 2.0 GB.
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Original commit was reverted due to using features from a newer nix than
hydra had, hydra has since been updated
This reverts commit 07e726c85c8f36d3a27fb7254f09ac69c7b94c65.
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This reverts commit 4ee556cfe9528a321f4a3746ca83f97feacf500e.
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For NixOS evaluation, this gives a ~21% reduction in the number of
values allocated and a ~4% speedup. It's also more readable.
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