}
sub runtimedeps : Chained('build') PathPart('runtime-deps') {
    my ($self, $c) = @_;
    
    my $build = $c->stash->{build};
    
    notFound($c, "Path " . $build->outpath . " is no longer available.")
        unless isValidPath($build->outpath);
    
    $c->stash->{current_view} = 'NixDepGraph';
    $c->stash->{storePaths} = [$build->outpath];
    
    $c->res->content_type('image/png'); # !!!

sub buildtimedeps : Chained('build') PathPart('buildtime-deps') {
    my ($self, $c) = @_;
    
    my $build = $c->stash->{build};
    
    notFound($c, "Path " . $build->drvpath . " is no longer available.")
        unless isValidPath($build->drvpath);
    
    $c->stash->{current_view} = 'NixDepGraph';
    $c->stash->{storePaths} = [$build->drvpath];
    
    $c->res->content_type('image/png'); # !!!
}

package Hydra::View::NixDepGraph;
use strict;
use base qw/Catalyst::View/;
use IO::Pipe;
sub process {
    my ($self, $c) = @_;
    
    $c->response->content_type('image/svg+xml');
    my @storePaths = @{$c->stash->{storePaths}};
    my $fh = new IO::Handle;
    
    open $fh, "nix-store --query --graph @storePaths | dot -Tsvg:cairo -Gdpi=100 -Gsize=20,20 -Gbgcolor=transparent |";
    $c->response->body($fh);
    
    return 1;
}
1;

		        (build-time dependencies: <a href="[% c.uri_for('/build' build.id 'buildtime-deps') %]">graph</a> | <a href="[% c.uri_for('/build' build.id 'deps') %]#buildtime">list</a>)

		        (<a href="[% c.uri_for('/build' build.id 'deps') %]#buildtime">build-time dependencies</a>)

		        (runtime dependencies: <a href="[% c.uri_for('/build' build.id 'runtime-deps') %]">graph</a> | <a href="[% c.uri_for('/build' build.id 'deps') %]#runtime">list</a>)

		        (<a href="[% c.uri_for('/build' build.id 'deps') %]#runtime">runtime dependencies</a>)