Swift on Linux: Make very first step work

Question

I am totally new to swift. It has just been released as open source for linux and I wanted to try it. This is on ubuntu 14.04. clang is installed as per prerequisites.

Answer 1

Following the advice of James D, I tried to run

sudo apt-get install ppa-purge
sudo ppa-purge -d trusty ppa:ubuntu-toolchain-r/test

However, this did not work. What's strange, is that what did work doesn't make sense. For me, I got it working by installing the above ppa first and then purging it. The whole command set that got me working was

sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get install g++-4.9 # This step may be optional

sudo apt-get install ppa-purge
sudo ppa-purge -d trusty ppa:ubuntu-toolchain-r/test