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* Another change to low-level derivations. The last one this year, I

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promise :-) This allows derivations to specify on *what* output
  paths of input derivations they are dependent.  This helps to
  prevent unnecessary downloads.  For instance, a build might be
  dependent on the `devel' and `lib' outputs of some library
  component, but not the `docs' output.
This commit is contained in:
Eelco Dolstra 2005-01-20 14:10:19 +00:00
parent 6ff48e77f6
commit 05f0430de1
7 changed files with 70 additions and 32 deletions
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16
src/libexpr/primops.cc
View file

@ -68,17 +68,17 @@ static Hash hashDerivationModulo(EvalState & state, Derivation drv)
/* For other derivations, replace the inputs paths with recursive
calls to this function.*/
PathSet inputs2;
for (PathSet::iterator i = drv.inputDrvs.begin();
DerivationInputs inputs2;
for (DerivationInputs::iterator i = drv.inputDrvs.begin();
i != drv.inputDrvs.end(); ++i)
{
Hash h = state.drvHashes[*i];
Hash h = state.drvHashes[i->first];
if (h.type == htUnknown) {
Derivation drv2 = derivationFromPath(*i);
Derivation drv2 = derivationFromPath(i->first);
h = hashDerivationModulo(state, drv2);
state.drvHashes[*i] = h;
state.drvHashes[i->first] = h;
}
inputs2.insert(printHash(h));
inputs2[printHash(h)] = i->second;
}
drv.inputDrvs = inputs2;
@ -119,7 +119,9 @@ static void processBinding(EvalState & state, Expr e, Derivation & drv,
/* !!! supports only single output path */
Path outPath = evalPath(state, a);
drv.inputDrvs.insert(drvPath);
StringSet ids;
ids.insert("out");
drv.inputDrvs[drvPath] = ids;
ss.push_back(outPath);
} else
throw Error("invalid derivation attribute");