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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#GetExecutable(buffer) abort
return ale#Var(a:buffer, 'haskell_hie_executable')
endfunction
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)
let l:cabal_file = fnamemodify(bufname(a:buffer), ':p:h')
let l:paths = ''
while empty(matchstr(l:cabal_file, '^\(\/\|\(\w:\\\)\)$'))
let l:cabal_file = fnamemodify(l:cabal_file, ':h')
let l:paths = l:paths . l:cabal_file . ','
endwhile
let l:project_file = globpath(l:paths, '*.cabal')
endif
" Either extract the project directory or take the current working
" directory
if !empty(l:project_file)
let l:project_file = fnamemodify(l:project_file, ':h')
else
let l:project_file = expand('#' . a:buffer . ':p:h')
endif
return l:project_file
endfunction
call ale#linter#Define('haskell', {
\ 'name': 'hie',
\ 'lsp': 'stdio',
\ 'command': '%e --lsp',
\ 'executable_callback': 'ale_linters#haskell#hie#GetExecutable',
\ 'project_root_callback': 'ale_linters#haskell#hie#GetProjectRoot',
\})
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