kurt at roeckx.be said: >> Running Wheezy, I take it? > It's libsodium-dev Thanks. Works on Jessie. Doesn't work on Wheezy. E: Unable to locate package libsodium-dev Works on Ubuntu 16.04.1, Doesn't work on 14.04.5 E: Unable to locate package libsodium-dev -- These are my opinions. I hate spam.