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Adapt scheduler to work with dynamic derivations

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To avoid dealing with an optional `drvPath` (because we might not know
it yet) everywhere, make an `CreateDerivationAndRealiseGoal`. This goal
just builds/substitutes the derivation file, and then kicks of a build
for that obtained derivation; in other words it does the chaining of
goals when the drv file is missing (as can already be the case) or
computed (new case).

This also means the `getDerivation` state can be removed from
`DerivationGoal`, which makes the `BasicDerivation` / in memory case and
`Derivation` / drv file file case closer together.

The map type is factored out for clarity, and because we will soon hvae
a second use for it (`Derivation` itself).

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
This commit is contained in:
John Ericson 2021-03-08 16:24:49 -05:00
parent 692074f714
commit 5e3986f59c
14 changed files with 525 additions and 58 deletions
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4
src/libstore/build/drv-output-substitution-goal.hh
View file

@ -73,7 +73,9 @@ public:
void work() override;
void handleEOF(int fd) override;
JobCategory jobCategory() override { return JobCategory::Substitution; };
JobCategory jobCategory() const override {
return JobCategory::Substitution;
};
};
}