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Merge pull request #11322 from NixOS/eval-cache-doc

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doc: Manage expectations for eval-cache
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tomberek 2024-08-19 13:50:15 -04:00 committed by GitHub
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2
doc/manual/src/release-notes/rl-2.4.md
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@ -141,6 +141,8 @@ more than 2800 commits from 195 contributors since release 2.3.
the evaluation cache. This is made possible by the hermetic the evaluation cache. This is made possible by the hermetic
evaluation model of flakes. evaluation model of flakes.
Intermediate results are not cached.
* The new `--offline` flag disables substituters and causes all * The new `--offline` flag disables substituters and causes all
locally cached tarballs and repositories to be considered locally cached tarballs and repositories to be considered
up-to-date. up-to-date.

6
src/libexpr/eval-settings.hh
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@ -185,7 +185,11 @@ struct EvalSettings : Config
)"}; )"};
Setting<bool> useEvalCache{this, true, "eval-cache", Setting<bool> useEvalCache{this, true, "eval-cache",
"Whether to use the flake evaluation cache."}; R"(
Whether to use the flake evaluation cache.
Certain commands won't have to evaluate when invoked for the second time with a particular version of a flake.
Intermediate results are not cached.
)"};
Setting<bool> ignoreExceptionsDuringTry{this, false, "ignore-try", Setting<bool> ignoreExceptionsDuringTry{this, false, "ignore-try",
R"( R"(