--- /dev/null
+" Author: Dmitri Vereshchagin <dmitri.vereshchagin@gmail.com>
+" Description: LSP linter for Erlang files
+
+call ale#Set('erlang_erlang_ls_executable', 'erlang_ls')
+call ale#Set('erlang_erlang_ls_log_dir', '')
+call ale#Set('erlang_erlang_ls_log_level', 'info')
+
+function! s:GetCommand(buffer) abort
+ let l:log_dir = ale#Var(a:buffer, 'erlang_erlang_ls_log_dir')
+ let l:log_level = ale#Var(a:buffer, 'erlang_erlang_ls_log_level')
+
+ let l:command = '%e'
+
+ if !empty(l:log_dir)
+ let l:command .= ' --log-dir=' . ale#Escape(l:log_dir)
+ endif
+
+ let l:command .= ' --log-level=' . ale#Escape(l:log_level)
+
+ return l:command
+endfunction
+
+function! s:FindProjectRoot(buffer) abort
+ let l:markers = [
+ \ '_checkouts/',
+ \ '_build/',
+ \ 'deps/',
+ \ 'erlang_ls.config',
+ \ 'rebar.lock',
+ \ 'erlang.mk',
+ \]
+
+ " This is a way to find Erlang/OTP root (the one that is managed
+ " by kerl or asdf). Useful if :ALEGoToDefinition takes us there.
+ let l:markers += ['.kerl_config']
+
+ for l:marker in l:markers
+ let l:path = l:marker[-1:] is# '/'
+ \ ? ale#path#FindNearestDirectory(a:buffer, l:marker)
+ \ : ale#path#FindNearestFile(a:buffer, l:marker)
+
+ if !empty(l:path)
+ return ale#path#Dirname(l:path)
+ endif
+ endfor
+
+ return ''
+endfunction
+
+call ale#linter#Define('erlang', {
+\ 'name': 'erlang_ls',
+\ 'executable': {b -> ale#Var(b, 'erlang_erlang_ls_executable')},
+\ 'command': function('s:GetCommand'),
+\ 'lsp': 'stdio',
+\ 'project_root': function('s:FindProjectRoot'),
+\ 'aliases': ['erlang-ls'],
+\})