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7 commits

Author SHA1 Message Date
John Ericson 68f4c728ec Split {,local-}derivation-goal.{cc,hh}
This separates the scheduling logic (including simple hook pathway) from
the local-store needing code.

This should be the final split for now. I'm reasonably happy with how
it's turning out, even before I'm done moving code into
`local-derivation-goal`. Benefits:

1. This will help "witness" that the hook case is indeed a lot simpler,
   and also compensate for the increased complexity that comes from
   content-addressed derivation outputs.

2. It also moves us ever so slightly towards a world where we could use
   off-the-shelf storage or sandboxing, since `local-derivation-goal`
   would be gutted in those cases, but `derivation-goal` should remain
   nearly the same.

The new `#if 0` in the new files will be deleted in the following
commit. I keep it here so if it turns out more stuff can be moved over,
it's easy to do so in a way that preserves ordering --- and thus
prevents conflicts.

N.B.
```sh
git diff HEAD^^ --color-moved --find-copies-harder --patience --stat
```
makes nicer output.
2021-02-26 16:10:26 +00:00
regnat ba1a256d08 Make DerivationGoal::drv a full Derivation
This field used to be a `BasicDerivation`, but this `BasicDerivation`
was downcasted to a `Derivation` when needed (implicitely or not), so we
might as well make it a full `Derivation` and upcast it when needed.

This also allows getting rid of a weird duplication in the way we
compute the static output hashes for the derivation. We had to
do it differently and in a different place depending on whether the
derivation was a full derivation or just a basic drv, but we can now do
it unconditionally on the full derivation.

Fix #4559
2021-02-23 14:15:45 +01:00
regnat 4bc28c44f2 Store the output hashes in the initialOutputs of the drv goal
That way we
1. Don't have to recompute them several times
2. Can compute them in a place where we know the type of the parent
  derivation, meaning that we don't need the casting dance we had before
2021-02-19 15:48:31 +01:00
regnat 87c8d3d702 Register the realisations for unresolved drvs
Once a build is done, get back to the original derivation, and register
all the newly built outputs for this derivation.

This allows Nix to work properly with derivations that don't have all
their build inputs available − thus allowing garbage collection and
(once it's implemented) binary substitution
2021-02-19 15:48:31 +01:00
Eelco Dolstra 3b7e00ce22 Move primeCache() to Worker::run()
We need the missing path info to communicate the worker's remaining
goals to the progress bar.
2020-12-01 13:44:48 +01:00
John Ericson 2ce726947a Trim derivation-goal.hh 2020-10-12 17:15:32 +00:00
John Ericson 4eb8c69853 Rename to hand-hold git (derivation-goal.hh) 2020-10-12 17:15:32 +00:00
Renamed from src/libstore/build.hh (Browse further)