Version: 1.9.8
Platform: x86_64
First, install or update to the latest system software.
sudo apt-get update
sudo apt-get install build-essential chrpath libssl-dev libxft-dev
Source: Jackett/Jackett#1576 (comment)
From the Jackett page, click the "add indexer" button so that the pop up window with the full list of indexers appears.
You'll then need to open your browser's development toolbar (in Chrome just hit F12) and go to the JavaScript Console and enter the following:
////hack to add all free indexers in Jackett
$(document).ready(function () {
EnableAllUnconfiguredIndexersList();