···

       
35
       
 
       
    ) or exit 1;

     

       
36
       
 
       


     

       
37
       
 
       
# Evaluate Nixpkgs into an XML representation.

     

       
38
       
-
       
my $xml = `nix-env -f '$path' -qa '$filter' --xml --meta --drv-path`;

     

       
39
       
 
       
die "$0: evaluation of ‘$path’ failed\n" if $? != 0;

     

       
40
       
 
       


     

       
41
       
 
       
my $info = XMLin($xml, KeyAttr => { 'item' => '+attrPath', 'meta' => 'name' }, ForceArray => 1, SuppressEmpty => '' ) or die "cannot parse XML output";

     

···

       
35
       
 
       
    ) or exit 1;

     

       
36
       
 
       


     

       
37
       
 
       
# Evaluate Nixpkgs into an XML representation.

     

       
38
       
+
       
my $xml = `nix-env -f '$path' --arg overlays '[]' -qa '$filter' --xml --meta --drv-path`;

     

       
39
       
 
       
die "$0: evaluation of ‘$path’ failed\n" if $? != 0;

     

       
40
       
 
       


     

       
41
       
 
       
my $info = XMLin($xml, KeyAttr => { 'item' => '+attrPath', 'meta' => 'name' }, ForceArray => 1, SuppressEmpty => '' ) or die "cannot parse XML output";