As reported in https://twitter.com/innerlambada/status/452858535198867457 the installer fails when php5-json isnt installed. The JSON library uses a non-free license (should be used for good, not evil) and is therefore not installed by default on debian-esque systems - we should make sure that JSON is available and properly error out if it is not.
This is a bit tricky since we cant load translations when JSON isnt available..
As reported in https://twitter.com/innerlambada/status/452858535198867457 the installer fails when php5-json isnt installed. The JSON library uses a non-free license (should be used for good, not evil) and is therefore not installed by default on debian-esque systems - we should make sure that JSON is available and properly error out if it is not.
This is a bit tricky since we cant load translations when JSON isnt available..