I broke up with neovim....vim is my best friend now

dot_vim/plugged/ale/ale_linters/elixir/elixir_ls.vim

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+" Author: Jon Parise <jon@indelible.org>
+" Description: ElixirLS integration (https://github.com/JakeBecker/elixir-ls)
+
+call ale#Set('elixir_elixir_ls_release', 'elixir-ls')
+call ale#Set('elixir_elixir_ls_config', {})
+
+function! ale_linters#elixir#elixir_ls#GetExecutable(buffer) abort
+    let l:dir = ale#path#Simplify(ale#Var(a:buffer, 'elixir_elixir_ls_release'))
+    let l:cmd = has('win32') ? '\language_server.bat' : '/language_server.sh'
+
+    return l:dir . l:cmd
+endfunction
+
+call ale#linter#Define('elixir', {
+\   'name': 'elixir-ls',
+\   'lsp': 'stdio',
+\   'executable': function('ale_linters#elixir#elixir_ls#GetExecutable'),
+\   'command': function('ale_linters#elixir#elixir_ls#GetExecutable'),
+\   'project_root': function('ale#handlers#elixir#FindMixUmbrellaRoot'),
+\   'lsp_config': {b -> ale#Var(b, 'elixir_elixir_ls_config')},
+\})