Dependency Injection in Panda

gistfile1.pl

use IoC;

say 'running';

class Pies {};
class Panda is Pies {
    has $!srcdir;
    has $!destdir;
    has $!statefile;
    has $!projectsfile;
    has $!resources;

};

class Panda::Ecosystem {
    has $!statefile;
    has $!projectsfile;
    has %!projects;
    has %!states;
};

class Panda::Fetcher   {
    has $!resources;
};

class Panda::Builder   {
    has $!resources;
};

class Panda::Tester    {
    has $!resources;
};

class Panda::Installer {
    has $!resources;
    has $!destdir;
};

class Panda::Resources {
    has $!srcdir;
};

my $pandadir = %*ENV<HOME> ~ '/.panda';

my $c = container 'panda' => contains {
    service 'srcdir'       => "$pandadir/src";
    service 'destdir'      => %*ENV<HOME> ~ '/.perl6';
    service 'statefile'    => "$pandadir/state";
    service 'projectsfile' => "$pandadir/projects.json";

    service 'ecosystem' => {
        type         => Panda::Ecosystem,
        lifecycle    => 'Singleton',
        dependencies => {
            statefile    => 'statefile',
            projectsfile => 'projectsfile'
        },
    };

    service 'resources' => {
        type         => Panda::Resources,
        lifecycle    => 'Singleton',
        dependencies => { srcdir => 'srcdir'},
    };

    service 'fetcher' => {
        type         => Panda::Fetcher,
        lifecycle    => 'Singleton',
        dependencies => { resources => 'resources' },
    };

    service 'builder' => {
        type         => Panda::Builder,
        lifecycle    => 'Singleton',
        dependencies => { resources => 'resources' },
    };

    service 'tester' => {
        type         => Panda::Tester,
        lifecycle    => 'Singleton',
        dependencies => { resources => 'resources' },
    };

    service 'installer' => {
        type         => Panda::Installer,
        lifecycle    => 'Singleton',
        dependencies => { resources => 'resources' },
    };
};

say $c.resolve('resources').perl;
say $c.resolve('destdir').perl;