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* Maintain the references/referers relation also for derivations.

Browse source 
This simplifies garbage collection and `nix-store --query
  --requisites' since we no longer need to treat derivations
  specially.

* Better maintaining of the invariants, e.g., setReferences() can only
  be called on a valid/substitutable path.
This commit is contained in:
Eelco Dolstra 2005-01-25 21:28:25 +00:00
parent 2a2756b856
commit a24b78e9f1
8 changed files with 84 additions and 82 deletions
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10
src/libstore/derivations.cc
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@ -14,8 +14,16 @@ Hash hashTerm(ATerm t)
Path writeDerivation(const Derivation & drv, const string & name)
{
PathSet references;
references.insert(drv.inputSrcs.begin(), drv.inputSrcs.end());
for (DerivationInputs::const_iterator i = drv.inputDrvs.begin();
i != drv.inputDrvs.end(); ++i)
references.insert(i->first);
/* Note that the outputs of a derivation are *not* references
(that can be missing (of course) and should not necessarily be
held during a garbage collection). */
return addTextToStore(name + drvExtension,
atPrint(unparseDerivation(drv)));
atPrint(unparseDerivation(drv)), references);
}