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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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4
scripts/build-remote.pl.in
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@ -5,6 +5,7 @@ use English '-no_match_vars';
use IO::Handle;
use Nix::Config;
use Nix::SSH qw/sshOpts openSSHConnection/;
use Nix::CopyClosure;
no warnings('once');
@ -225,8 +226,7 @@ sub removeRoots {
# Copy the derivation and its dependencies to the build machine.
system("NIX_SSHOPTS=\"@sshOpts\" @bindir@/nix-copy-closure $hostName $maybeSign $drvPath @inputs") == 0
or die "cannot copy inputs to $hostName: $?";
Nix::CopyClosure::copyTo($hostName, [ @sshOpts ], [ $drvPath, @inputs ], "", "", 0, 0, $maybeSign ne "");
# Perform the build.