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CA derivations that depend on other CA derivations

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Co-authored-by: Théophane Hufschmitt <regnat@users.noreply.github.com>
This commit is contained in:
John Ericson 2020-08-22 20:44:47 +00:00
parent e0b0e18905
commit 8eb73a8724
6 changed files with 189 additions and 28 deletions
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18
src/libstore/derivations.hh
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@ -4,6 +4,7 @@
#include "types.hh"
#include "hash.hh"
#include "content-address.hh"
#include "sync.hh"
#include <map>
#include <variant>
@ -127,6 +128,13 @@ struct Derivation : BasicDerivation
std::string unparse(const Store & store, bool maskOutputs,
std::map<std::string, StringSet> * actualInputs = nullptr) const;
/* Return the underlying basic derivation but with
1. input drv outputs moved to input sources.
2. placeholders replaced with realized input store paths. */
BasicDerivation resolve(Store & store);
Derivation() = default;
Derivation(BasicDerivation && bd) : BasicDerivation(std::move(bd)) { }
};
@ -187,6 +195,16 @@ typedef std::map<StorePath, DrvHashModulo> DrvHashes;
extern DrvHashes drvHashes; // FIXME: global, not thread-safe
/* Memoisation of `readDerivation(..).resove()`. */
typedef std::map<
StorePath,
std::optional<StorePath>
> DrvPathResolutions;
// FIXME: global, though at least thread-safe.
// FIXME: arguably overlaps with hashDerivationModulo memo table.
extern Sync<DrvPathResolutions> drvPathResolutions;
bool wantOutput(const string & output, const std::set<string> & wanted);
struct Source;