Hello NobbZ,
I tried out elixir V 1.10.1 on Centos 7 but its still failing to compile on erlang 22

> Recompile: src/elixir
> Generated elixir app
> ==> bootstrap (compile)
> error: undef
> stacktrace: [{elixir_aliases,expand,
>                  [{'__aliases__',[{line,938}],['Process']},[],[],nil],
>                  []},
>              {'Elixir.Macro',do_expand_once,2,
>                  [{file,"lib/macro.ex"},{line,1217}]},
>              {'Elixir.Macro',expand_until,2,
>                  [{file,"lib/macro.ex"},{line,1379}]},
>              {'Elixir.Kernel.Typespec',typespec,4,
>                  [{file,"lib/kernel/typespec.ex"},{line,726}]},
>              {'Elixir.Kernel.Typespec',typespec,4,
>                  [{file,"lib/kernel/typespec.ex"},{line,654}]},
>              {lists,mapfoldl,3,[{file,"lists.erl"},{line,1354}]},
>              {'Elixir.Kernel.Typespec',fn_args,5,
>                  [{file,"lib/kernel/typespec.ex"},{line,942}]},
>              {'Elixir.Kernel.Typespec',fn_args,6,
>                  [{file,"lib/kernel/typespec.ex"},{line,928}]}]
> make: *** [lib/elixir/ebin/Elixir.Kernel.beam] Error 1

> [root@kyu-renu-stdportal1 elixir-1.10.1]# cat /etc/redhat-release 
> 
> CentOS Linux release 7.6.1810 (Core) 
> 
> [root@kyu-renu-stdportal1 elixir-1.10.1]# erl -v
> 
> Erlang/OTP 22 [erts-10.4] [source] [64-bit] [smp:6:6] [ds:6:6:10] [async-threads:1] [hipe]
> 
> Eshell V10.4 (abort with ^G)
> 
> 1>