So to close this thread, and in case it helps anyone, my mistake was to have installed and used the dev version of ipython blindly following a tutorial, thinking I was using the anaconda instance I installed earlier (which was not even in my PATH).
Anyhow I:
- uninstalled that ipython dev instance
- added anaconda/bin to my zsh path (add it to ~/.zshrc - that's why it was not even in my path after install) // at this point the server was launching fine but I couldn't access it in my browser >> firewall problems.
- opened my port of choice in my firewall (help for linode or ubuntu in general)
And everything works fine now.
