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

dot_vim/plugged/ale/ale_linters/haskell/hie.vim

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+" Author: Luxed <devildead13@gmail.com>
+" Description: A language server for Haskell
+
+call ale#Set('haskell_hie_executable', 'hie')
+
+function! ale_linters#haskell#hie#GetProjectRoot(buffer) abort
+    " Search for the stack file first
+    let l:project_file = ale#path#FindNearestFile(a:buffer, 'stack.yaml')
+
+    " If it's empty, search for the cabal file
+    if empty(l:project_file)
+        " Search all of the paths except for the root filesystem path.
+        let l:paths = join(
+        \   ale#path#Upwards(expand('#' . a:buffer . ':p:h'))[:-2],
+        \   ','
+        \)
+        let l:project_file = globpath(l:paths, '*.cabal')
+    endif
+
+    " If we still can't find one, use the current file.
+    if empty(l:project_file)
+        let l:project_file = expand('#' . a:buffer . ':p')
+    endif
+
+    return fnamemodify(l:project_file, ':h')
+endfunction
+
+function! ale_linters#haskell#hie#GetCommand(buffer) abort
+    let l:executable = ale#Var(a:buffer, 'haskell_hie_executable')
+
+    return ale#handlers#haskell_stack#EscapeExecutable(l:executable, 'hie')
+    \   . ' --lsp'
+endfunction
+
+call ale#linter#Define('haskell', {
+\   'name': 'hie',
+\   'lsp': 'stdio',
+\   'command': function('ale_linters#haskell#hie#GetCommand'),
+\   'executable': {b -> ale#Var(b, 'haskell_hie_executable')},
+\   'project_root': function('ale_linters#haskell#hie#GetProjectRoot'),
+\})