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* Add an API function exportPaths() that provides the functionality of

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‘nix-store --export’.
* Add a Perl module that provides the functionality of
  ‘nix-copy-closure --to’.  This is used by build-remote.pl so it no
  longer needs to start a separate nix-copy-closure process.  Also, it
  uses the Perl API to do the export, so it doesn't need to start a
  separate nix-store process either.  As a result, nix-copy-closure
  and build-remote.pl should no longer fail on very large closures due
  to an "Argument list too long" error.  (Note that having very many
  dependencies in a single derivation can still fail because the
  environment can become too large.  Can't be helped though.)
This commit is contained in:
Eelco Dolstra 2011-11-23 15:13:37 +00:00
parent ab20af3e6f
commit 5bbd693cae
10 changed files with 90 additions and 38 deletions
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6
src/nix-store/nix-store.cc
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@ -594,11 +594,7 @@ static void opExport(Strings opFlags, Strings opArgs)
else throw UsageError(format("unknown flag `%1%'") % *i);
FdSink sink(STDOUT_FILENO);
for (Strings::iterator i = opArgs.begin(); i != opArgs.end(); ++i) {
writeInt(1, sink);
store->exportPath(*i, sign, sink);
}
writeInt(0, sink);
exportPaths(*store, opArgs, sign, sink);
}