No Unix Sockets support in vanilla Erlang or Elixir.
However, there are several solutions provided as C-extensions. One of them is already mentioned procket , the other is afunix .
I find the examples in afunix readme quite simple and easy for the brain to translate into Elixir (remember to make amends for vars and use the apostrophes ' instead of quotation marks " !).
[EDIT]
An Erlang project (as long as it is reinforcing, both of the above) can easily be added to your Mix project by adding the following tuple to it (shamelessly promoting the aforementioned afunix no reason :):
{:afunix, github: "tonyrog/afunix"}
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