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#! /usr/bin/perl -w
use strict;
use Cwd;
my $selfdir = $ENV{"out"};
mkdir "$selfdir", 0755 || die "error creating $selfdir";
# For each activated package, create symlinks.
sub createLinks {
my $srcdir = shift;
my $dstdir = shift;
my @srcfiles = glob("$srcdir/*");
foreach my $srcfile (@srcfiles) {
my $basename = $srcfile;
$basename =~ s/^.*\///g; # strip directory
my $dstfile = "$dstdir/$basename";
if ($srcfile =~ /\/envpkgs$/) {
} elsif (-d $srcfile) {
# !!! hack for resolving name clashes
if (!-e $dstfile) {
mkdir $dstfile, 0755 ||
die "error creating directory $dstfile";
}
-d $dstfile or die "$dstfile is not a directory";
createLinks($srcfile, $dstfile);
} elsif (-l $dstfile) {
my $target = readlink($dstfile);
die "collission between $srcfile and $target";
} else {
# print "linking $dstfile to $srcfile\n";
symlink($srcfile, $dstfile) ||
die "error creating link $dstfile";
}
}
}
my %done;
sub addPkg {
my $pkgdir = shift;
return if (defined $done{$pkgdir});
$done{$pkgdir} = 1;
# print "merging $pkgdir\n";
createLinks("$pkgdir", "$selfdir");
# if (-f "$pkgdir/envpkgs") {
# my $envpkgs = `cat $pkgdir/envpkgs`;
# chomp $envpkgs;
# my @envpkgs = split / +/, $envpkgs;
# foreach my $envpkg (@envpkgs) {
# addPkg($envpkg);
# }
# }
}
my @args = split ' ', $ENV{"derivations"};
while (scalar @args > 0) {
my $drvpath = shift @args;
print "adding $drvpath\n";
addPkg($drvpath);
}
symlink($ENV{"manifest"}, "$selfdir/manifest") or die "cannot create manifest";
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