diff --git a/vimrc b/vimrc
index 6dbc534..aeeacae 100644
--- a/vimrc
+++ b/vimrc
@@ -680,3 +680,40 @@ nnoremap <leader>z  :Goyo<CR>
 nmap ,l :Limelight!!<CR>
 
 set textwidth=120
+" ## added by OPAM user-setup for vim / base ## 93ee63e278bdfc07d1139a748ed3fff2 ## you can edit, but keep this line
+let s:opam_share_dir = system("opam config var share")
+let s:opam_share_dir = substitute(s:opam_share_dir, '[\r\n]*$', '', '')
+
+let s:opam_configuration = {}
+
+function! OpamConfOcpIndent()
+  execute "set rtp^=" . s:opam_share_dir . "/ocp-indent/vim"
+endfunction
+let s:opam_configuration['ocp-indent'] = function('OpamConfOcpIndent')
+
+function! OpamConfOcpIndex()
+  execute "set rtp+=" . s:opam_share_dir . "/ocp-index/vim"
+endfunction
+let s:opam_configuration['ocp-index'] = function('OpamConfOcpIndex')
+
+function! OpamConfMerlin()
+  let l:dir = s:opam_share_dir . "/merlin/vim"
+  execute "set rtp+=" . l:dir
+endfunction
+let s:opam_configuration['merlin'] = function('OpamConfMerlin')
+
+let s:opam_packages = ["ocp-indent", "ocp-index", "merlin"]
+let s:opam_check_cmdline = ["opam list --installed --short --safe --color=never"] + s:opam_packages
+let s:opam_available_tools = split(system(join(s:opam_check_cmdline)))
+for tool in s:opam_packages
+  " Respect package order (merlin should be after ocp-index)
+  if count(s:opam_available_tools, tool) > 0
+    call s:opam_configuration[tool]()
+  endif
+endfor
+" ## end of OPAM user-setup addition for vim / base ## keep this line
+" ## added by OPAM user-setup for vim / ocp-indent ## 8817d088e6c1d314c90837f0e1878d40 ## you can edit, but keep this line
+if count(s:opam_available_tools,"ocp-indent") == 0
+  source "/home/paul/.opam/default/share/ocp-indent/vim/indent/ocaml.vim"
+endif
+" ## end of OPAM user-setup addition for vim / ocp-indent ## keep this line