Disable payment method for custom shipping method

For anyone actually needing this, here’s the code that works for me…

function payment_gateway_disable_country( $available_gateways ) {

    $chosen_methods = WC()->session->get( 'chosen_shipping_methods' );
    $chosen_shipping = $chosen_methods[0];

    if ( isset( $available_gateways['bacs'] ) && $chosen_shipping=='ppl_dobirka') {
        unset(  $available_gateways['bacs'] );
    }
    return $available_gateways;
}
add_filter( 'woocommerce_available_payment_gateways', 'payment_gateway_disable_country' );