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Add Store::buildPathsWithResults()

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This function is like buildPaths(), except that it returns a vector of
BuildResults containing the exact statuses and output paths of each
derivation / substitution. This is convenient for functions like
Installable::build(), because they then don't need to do another
series of calls to get the outputs of CA derivations. It's also a
precondition to impure derivations, where we *can't* query the output
of those derivations since they're not stored in the Nix database.

Note that PathSubstitutionGoal can now also return a BuildStatus.
This commit is contained in:
Eelco Dolstra 2022-03-08 19:50:46 +01:00
parent 92b8d4d886
commit a4604f1928
16 changed files with 411 additions and 186 deletions
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4
src/libstore/worker-protocol.hh
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@ -9,7 +9,7 @@ namespace nix {
#define WORKER_MAGIC_1 0x6e697863
#define WORKER_MAGIC_2 0x6478696f
#define PROTOCOL_VERSION (1 << 8 | 33)
#define PROTOCOL_VERSION (1 << 8 | 34)
#define GET_PROTOCOL_MAJOR(x) ((x) & 0xff00)
#define GET_PROTOCOL_MINOR(x) ((x) & 0x00ff)
@ -57,6 +57,7 @@ typedef enum {
wopQueryRealisation = 43,
wopAddMultipleToStore = 44,
wopAddBuildLog = 45,
wopBuildPathsWithResults = 46,
} WorkerOp;
@ -91,6 +92,7 @@ MAKE_WORKER_PROTO(, ContentAddress);
MAKE_WORKER_PROTO(, DerivedPath);
MAKE_WORKER_PROTO(, Realisation);
MAKE_WORKER_PROTO(, DrvOutput);
MAKE_WORKER_PROTO(, BuildResult);
MAKE_WORKER_PROTO(template<typename T>, std::vector<T>);
MAKE_WORKER_PROTO(template<typename T>, std::set<T>);