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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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4
src/libstore/store-api.hh
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@ -10,8 +10,8 @@
#include "sync.hh"
#include "globals.hh"
#include "config.hh"
#include "derivations.hh"
#include "path-info.hh"
#include "repair-flag.hh"
#include <atomic>
#include <limits>
@ -62,6 +62,8 @@ MakeError(BadStorePath, Error);
MakeError(InvalidStoreURI, Error);
struct BasicDerivation;
struct Derivation;
class FSAccessor;
class NarInfoDiskCache;
class Store;