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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_callback': 'ale_linters#haskell#hie#GetCommand',
\ 'executable_callback': ale#VarFunc('haskell_hie_executable'),
\ 'project_root_callback': 'ale_linters#haskell#hie#GetProjectRoot',
\})
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