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

dot_vim/plugged/ale/ale_linters/ocaml/merlin.vim

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+" Author: Andrey Popp -- @andreypopp
+" Description: Report errors in OCaml code with Merlin
+
+if !exists('g:merlin')
+    finish
+endif
+
+function! ale_linters#ocaml#merlin#Handle(buffer, lines) abort
+    return merlin#ErrorLocList()
+endfunction
+
+call ale#linter#Define('ocaml', {
+\   'name': 'merlin',
+\   'executable': 'ocamlmerlin',
+\   'command': 'true',
+\   'callback': 'ale_linters#ocaml#merlin#Handle',
+\})

dot_vim/plugged/ale/ale_linters/ocaml/ocamllsp.vim

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+" Author: Risto Stevcev <me@risto.codes>
+" Description: The official language server for OCaml
+
+call ale#Set('ocaml_ocamllsp_use_opam', 1)
+
+call ale#linter#Define('ocaml', {
+\   'name': 'ocamllsp',
+\   'lsp': 'stdio',
+\   'executable': function('ale#handlers#ocamllsp#GetExecutable'),
+\   'command': function('ale#handlers#ocamllsp#GetCommand'),
+\   'language': function('ale#handlers#ocamllsp#GetLanguage'),
+\   'project_root': function('ale#handlers#ocamllsp#GetProjectRoot'),
+\})

dot_vim/plugged/ale/ale_linters/ocaml/ols.vim

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+" Author: Michael Jungo <michaeljungo92@gmail.com>
+" Description: A language server for OCaml
+
+call ale#Set('ocaml_ols_executable', 'ocaml-language-server')
+call ale#Set('ocaml_ols_use_global', get(g:, 'ale_use_global_executables', 0))
+
+call ale#linter#Define('ocaml', {
+\   'name': 'ols',
+\   'lsp': 'stdio',
+\   'executable': function('ale#handlers#ols#GetExecutable'),
+\   'command': function('ale#handlers#ols#GetCommand'),
+\   'language': function('ale#handlers#ols#GetLanguage'),
+\   'project_root': function('ale#handlers#ols#GetProjectRoot'),
+\})