lix/src/nix/store-copy-log.cc
Eelco Dolstra 3876238546 Add Installable::toDrvPaths()
This is needed to get the path of a derivation that might not exist
(e.g. for 'nix store copy-log').

InstallableStorePath::toDerivedPaths() cannot be used for this because
it calls readDerivation(), so it fails if the store doesn't have the
derivation.
2022-01-18 17:28:18 +01:00

47 lines
1.1 KiB
C++

#include "command.hh"
#include "shared.hh"
#include "store-api.hh"
#include "sync.hh"
#include "thread-pool.hh"
#include <atomic>
using namespace nix;
struct CmdCopyLog : virtual CopyCommand, virtual InstallablesCommand
{
std::string description() override
{
return "copy build logs between Nix stores";
}
std::string doc() override
{
return
#include "store-copy-log.md"
;
}
Category category() override { return catUtility; }
void run(ref<Store> srcStore) override
{
auto dstStore = getDstStore();
StorePathSet drvPaths;
for (auto & i : installables)
for (auto & drvPath : i->toDrvPaths(getEvalStore()))
drvPaths.insert(drvPath);
for (auto & drvPath : drvPaths) {
if (auto log = srcStore->getBuildLog(drvPath))
dstStore->addBuildLog(drvPath, *log);
else
throw Error("build log for '%s' is not available", srcStore->printStorePath(drvPath));
}
}
};
static auto rCmdCopyLog = registerCommand2<CmdCopyLog>({"store", "copy-log"});