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Clean up DerivationOutput, and headers

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1. `DerivationOutput` now as the `std::variant` as a base class. And the
   variants are given hierarchical names under `DerivationOutput`.

   In 8e0d0689be @matthewbauer and I
   didn't know a better idiom, and so we made it a field. But this sort
   of "newtype" is anoying for literals downstream.

   Since then we leaned the base class, inherit the constructors trick,
   e.g. used in `DerivedPath`. Switching to use that makes this more
   ergonomic, and consistent.

2. `store-api.hh` and `derivations.hh` are now independent.

   In bcde5456cc I swapped the dependency,
   but I now know it is better to just keep on using incomplete types as
   much as possible for faster compilation and good separation of
   concerns.
This commit is contained in:
John Ericson 2022-03-17 22:29:15 +00:00
parent 6afc361798
commit 197feed51d
16 changed files with 113 additions and 103 deletions
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12
src/nix/develop.cc
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@ -196,14 +196,14 @@ static StorePath getDerivationEnvironment(ref<Store> store, ref<Store> evalStore
drv.inputSrcs.insert(std::move(getEnvShPath));
if (settings.isExperimentalFeatureEnabled(Xp::CaDerivations)) {
for (auto & output : drv.outputs) {
output.second = {
.output = DerivationOutputDeferred{},
};
output.second = DerivationOutput::Deferred {},
drv.env[output.first] = hashPlaceholder(output.first);
}
} else {
for (auto & output : drv.outputs) {
output.second = { .output = DerivationOutputInputAddressed { .path = StorePath::dummy } };
output.second = DerivationOutput::InputAddressed {
.path = StorePath::dummy,
};
drv.env[output.first] = "";
}
auto h0 = hashDerivationModulo(*evalStore, drv, true);
@ -211,7 +211,9 @@ static StorePath getDerivationEnvironment(ref<Store> store, ref<Store> evalStore
for (auto & output : drv.outputs) {
auto outPath = store->makeOutputPath(output.first, h, drv.name);
output.second = { .output = DerivationOutputInputAddressed { .path = outPath } };
output.second = DerivationOutput::InputAddressed {
.path = outPath,
};
drv.env[output.first] = store->printStorePath(outPath);
}
}