I have elixir 1.7.2 on my computer installed using asdf, both elixir and erlang otp 21. On my project mix file I have added the latest release candidate of dialyzer as instructed on dialyzer github
{:dialyxir, "~> 1.0.0-rc.3", only: [:dev], runtime: false}
When I run mix dialyzer I get a couple of errors when its creating the plt among them being:
Could not get Core Erlang code for: /home/sigu/.asdf/installs/elixir/1.7.2/lib/elixir/ebin/elixir_parser.beam
Recompile with +debug_info or analyze starting from source code Could not get Core Erlang code for: /home/sigu/.asdf/installs/elixir/1.7.2/lib/logger/ebin/Elixir.Logger.ErlangHandler.beam
Everything then fails with errors included the elixir built in functions like System.get_env/1
:0:unknown_function
Function System.get_env/1 does not exist.
Turns out the error is being caused by the fact that when I installed elixir, asdf uses a version precompiled with erlang otp-20. When dialyzer tries to create the plt, it fails to find elixir 1.7.2 compiled with otp-21.
To work around this, install elixir precompiled with otp-21 as instructed on the asdf/elixir github - Thanks to the elixir slack where I found the solution
asdf install elixir 1.7.2-otp-21
Command installs elixir precompiled with otp-21.
Everything should work as expected now