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nix-copy-closure: Implement in C++.

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Tests fail currently because the database is not given proper hashes in the VM
This commit is contained in:
Shea Levy 2016-08-10 10:44:39 -04:00
parent 8af062f372
commit bfa41eb671
11 changed files with 100 additions and 115 deletions
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22
src/libstore/store-api.cc
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@ -4,6 +4,7 @@
#include "util.hh"
#include "nar-info-disk-cache.hh"
#include "thread-pool.hh"
#include "derivations.hh"
#include <future>
@ -699,8 +700,27 @@ std::list<ref<Store>> getDefaultSubstituters()
}
void copyPaths(ref<Store> from, ref<Store> to, const Paths & storePaths)
void copyPaths(ref<Store> from, ref<Store> to, const Paths & storePaths, bool substitute)
{
if (substitute) {
/* Filter out .drv files (we don't want to build anything). */
PathSet paths2;
for (auto & path : storePaths)
if (!isDerivation(path)) paths2.insert(path);
unsigned long long downloadSize, narSize;
PathSet willBuild, willSubstitute, unknown;
to->queryMissing(PathSet(paths2.begin(), paths2.end()),
willBuild, willSubstitute, unknown, downloadSize, narSize);
/* FIXME: should use ensurePath(), but it only
does one path at a time. */
if (!willSubstitute.empty())
try {
to->buildPaths(willSubstitute);
} catch (Error & e) {
printMsg(lvlError, format("warning: %1%") % e.msg());
}
}
std::string copiedLabel = "copied";
logger->setExpected(copiedLabel, storePaths.size());