123 lines
2.6 KiB
Perl
Executable file
123 lines
2.6 KiB
Perl
Executable file
#! @perl@ -w @perlFlags@
|
|
|
|
use utf8;
|
|
use strict;
|
|
use warnings;
|
|
use Cwd qw(realpath);
|
|
use Errno;
|
|
use File::Basename qw(dirname);
|
|
use File::Path qw(make_path);
|
|
use File::Spec::Functions qw(catfile);
|
|
use List::Util qw(reduce);
|
|
use IPC::Open3;
|
|
use Nix::Config;
|
|
use Nix::Store qw(derivationFromPath);
|
|
use POSIX qw(uname);
|
|
use Storable qw(lock_retrieve lock_store);
|
|
|
|
my ($sysname, undef, $version, undef, $machine) = uname;
|
|
$sysname =~ /Darwin/ or die "This tool is only meant to be used on Darwin systems.";
|
|
|
|
my $cache = "$Nix::Config::stateDir/dependency-maps/$machine-$sysname-$version.map";
|
|
|
|
make_path dirname($cache);
|
|
|
|
our $DEPS;
|
|
eval {
|
|
$DEPS = lock_retrieve($cache);
|
|
};
|
|
|
|
if($!{ENOENT}) {
|
|
lock_store {}, $cache;
|
|
$DEPS = {};
|
|
} elsif($@) {
|
|
die "Unable to obtain a lock on dependency-map file $cache: $@";
|
|
}
|
|
|
|
sub mkset(@) {
|
|
my %set;
|
|
@set{@_} = ();
|
|
\%set
|
|
}
|
|
|
|
sub union($$) {
|
|
my ($set1, $set2) = @_;
|
|
my %new = (%$set1, %$set2);
|
|
\%new
|
|
}
|
|
|
|
sub cache_filepath($) {
|
|
my $fp = shift;
|
|
$fp =~ s/-/--/g;
|
|
$fp =~ s/\//-/g;
|
|
$fp =~ s/^-//g;
|
|
catfile $cache, $fp
|
|
}
|
|
|
|
sub resolve_tree {
|
|
sub resolve_tree_inner {
|
|
my ($lib, $TREE) = @_;
|
|
return if (defined $TREE->{$lib});
|
|
$TREE->{$lib} = mkset(@{cache_get($lib)});
|
|
foreach my $dep (keys %{$TREE->{$lib}}) {
|
|
resolve_tree_inner($dep, $TREE);
|
|
}
|
|
values %$TREE
|
|
}
|
|
|
|
reduce { union($a, $b) } {}, resolve_tree_inner(@_)
|
|
}
|
|
|
|
sub cache_get {
|
|
my $key = shift;
|
|
if (defined $DEPS->{$key}) {
|
|
$DEPS->{$key}
|
|
} else {
|
|
cache_insert($key);
|
|
cache_get($key)
|
|
}
|
|
}
|
|
|
|
sub cache_insert($) {
|
|
my $key = shift;
|
|
print STDERR "Finding dependencies for $key...\n";
|
|
my @deps = find_deps($key);
|
|
$DEPS->{$key} = \@deps;
|
|
}
|
|
|
|
sub find_deps($) {
|
|
my $lib = shift;
|
|
my($chld_in, $chld_out, $chld_err);
|
|
my $pid = open3($chld_in, $chld_out, $chld_err, "@otool@", "-L", "-arch", "x86_64", $lib);
|
|
waitpid($pid, 0);
|
|
my $line = readline $chld_out;
|
|
if($? == 0 and $line !~ /not an object file/) {
|
|
my @libs;
|
|
while(<$chld_out>) {
|
|
my $dep = (split /\s+/)[1];
|
|
push @libs, $dep unless $dep eq $lib or $dep =~ /\@rpath/;
|
|
}
|
|
@libs
|
|
} elsif (-l $lib) {
|
|
(realpath($lib))
|
|
} else {
|
|
()
|
|
}
|
|
}
|
|
|
|
if (defined $ARGV[0]) {
|
|
my $deps = derivationFromPath($ARGV[0])->{"env"}->{"__impureHostDeps"};
|
|
if (defined $deps) {
|
|
my @files = split(/\s+/, $deps);
|
|
my $depcache = {};
|
|
my $depset = reduce { union($a, $b) } (map { resolve_tree($_, $depcache) } @files);
|
|
print "extra-chroot-dirs\n";
|
|
print join("\n", keys %$depset);
|
|
print "\n\n";
|
|
}
|
|
lock_store($DEPS, $cache);
|
|
} else {
|
|
print STDERR "Usage: $0 path/to/derivation.drv\n";
|
|
exit 1
|
|
}
|