111 lines
2.3 KiB
Perl
Executable file
111 lines
2.3 KiB
Perl
Executable file
#! /usr/bin/perl -w
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use strict;
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my @paths = `nix-store -qR /home/eelco/.nix-profile/bin/firefox`;
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my %copyMap;
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my %rewriteMap;
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my $counter = 0;
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foreach my $path (@paths) {
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chomp $path;
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$path =~ /^(.*)\/([^-]+)-(.*)$/ or die "invalid store path `$path'";
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my $hash = $2;
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# my $newHash = "deadbeef" . (sprintf "%024d", $counter++);
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my $newHash = "deadbeef" . substr($hash, 0, 24);
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my $newPath = "/home/eelco/chroot/$1/$newHash-$3";
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die unless length $newHash == length $hash;
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$copyMap{$path} = $newPath;
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$rewriteMap{$hash} = $newHash;
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}
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my %rewriteMap2;
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sub rewrite;
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sub rewrite {
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my $src = shift;
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my $dst = shift;
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if (-l $dst) {
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my $target = readlink $dst or die;
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foreach my $srcHash (keys %rewriteMap2) {
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my $dstHash = $rewriteMap{$srcHash};
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print " $srcHash -> $dstHash\n";
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$target =~ s/$srcHash/$dstHash/g;
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}
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unlink $dst or die;
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symlink $target, $dst;
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}
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elsif (-f $dst) {
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print "$dst\n";
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foreach my $srcHash (keys %rewriteMap2) {
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my $dstHash = $rewriteMap{$srcHash};
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print " $srcHash -> $dstHash\n";
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my @stats = lstat $dst or die;
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system "sed s/$srcHash/$dstHash/g < '$dst' > '$dst.tmp'";
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die if $? != 0;
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rename "$dst.tmp", $dst or die;
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chmod $stats[2], $dst or die;
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}
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}
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elsif (-d $dst) {
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chmod 0755, $dst;
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opendir(DIR, "$dst") or die "cannot open `$dst': $!";
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my @files = readdir DIR;
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closedir DIR;
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foreach my $file (@files) {
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next if $file eq "." || $file eq "..";
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rewrite "$src/$file", "$dst/$file";
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}
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}
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}
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foreach my $src (keys %copyMap) {
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my $dst = $copyMap{$src};
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print "$src -> $dst\n";
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if (!-e $dst) {
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system "cp -prd $src $dst";
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die if $? != 0;
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my @refs = `nix-store -q --references $src`;
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%rewriteMap2 = ();
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foreach my $ref (@refs) {
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chomp $ref;
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$ref =~ /^(.*)\/([^-]+)-(.*)$/ or die "invalid store path `$ref'";
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my $hash = $2;
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$rewriteMap2{$hash} = $rewriteMap{$hash};
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}
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rewrite $src, $dst;
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}
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}
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