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* Delete the output paths before invoking the build hook.

This commit is contained in:
Eelco Dolstra 2007-03-07 15:53:11 +00:00
parent df0283ae86
commit 917e06bf63
1 changed files with 14 additions and 14 deletions
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28
src/libstore/build.cc
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@ -1262,6 +1262,20 @@ bool DerivationGoal::prepareBuild()
% drvPath);
}
/* If any of the outputs already exist but are not registered,
delete them. */
for (DerivationOutputs::iterator i = drv.outputs.begin();
i != drv.outputs.end(); ++i)
{
Path path = i->second.path;
if (store->isValidPath(path))
throw BuildError(format("obstructed build: path `%1%' exists") % path);
if (pathExists(path)) {
debug(format("removing unregistered path `%1%'") % path);
deletePathWrapped(path);
}
}
/* Gather information necessary for computing the closure and/or
running the build hook. */
@ -1318,20 +1332,6 @@ void DerivationGoal::startBuilder()
format("a `%1%' is required to build `%3%', but I am a `%2%'")
% drv.platform % thisSystem % drvPath);
/* If any of the outputs already exist but are not registered,
delete them. */
for (DerivationOutputs::iterator i = drv.outputs.begin();
i != drv.outputs.end(); ++i)
{
Path path = i->second.path;
if (store->isValidPath(path))
throw BuildError(format("obstructed build: path `%1%' exists") % path);
if (pathExists(path)) {
debug(format("removing unregistered path `%1%'") % path);
deletePathWrapped(path);
}
}
/* Construct the environment passed to the builder. */
typedef map<string, string> Environment;
Environment env;