Installation

Install ASDF

asdf installs into ~/.asdf dir:

git clone https://github.com/asdf-vm/asdf.git ~/.asdf --branch v0.11.1

Add to ~/.bashrc:

. "$HOME/.asdf/asdf.sh" # to be able to type asdf
. "$HOME/.asdf/completions/asdf.bash" # for autocompletion

Use ASDF to install Erlang

asdf plugin-add erlang https://github.com/asdf-vm/asdf-erlang.git # adding erlang asdf plugin

sudo apt-get -y install build-essential autoconf m4 libncurses5-dev libwxgtk3.0-gtk3-dev libwxgtk-webview3.0-gtk3-dev libgl1-mesa-dev libglu1-mesa-dev libpng-dev libssh-dev unixodbc-dev xsltproc fop libxml2-utils libncurses-dev openjdk-11-jdk

asdf list-all erlang

asdf install erlang 25.2.3

Use ASDF to install Elixir

asdf plugin-add elixir https://github.com/asdf-vm/asdf-elixir.git
asdf list-all elixir

Install the Elixir that matches your Erlang

asdf install elixir 1.14.3-otp-25

Activate Erlang and Elixir

asdf global erlang 25.2.3
asdf global elixir 1.14.3-otp-25

Install Phoenix with Elixir Mix Build Tool

Use Mix to install Hex Erlang Package Manager locally

mix local.hex
or
mix archive.install github hexpm/hex branch latest

Scaffold a new app

mix phx.new hello