ale/ale_linters/haskell/cabal_ghc.vim

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" Author: Eric Wolf <ericwolf42@gmail.com>
" Description: ghc for Haskell files called with cabal exec
call ale#Set('haskell_cabal_ghc_options', '-fno-code -v0')
function! ale_linters#haskell#cabal_ghc#GetCommand(buffer) abort
return ale#path#BufferCdString(a:buffer)
\ . 'cabal exec -- ghc '
\ . ale#Var(a:buffer, 'haskell_cabal_ghc_options')
\ . ' %t'
endfunction
call ale#linter#Define('haskell', {
\ 'name': 'cabal_ghc',
\ 'aliases': ['cabal-ghc'],
\ 'output_stream': 'stderr',
\ 'executable': 'cabal',
\ 'command': function('ale_linters#haskell#cabal_ghc#GetCommand'),
\ 'callback': 'ale#handlers#haskell#HandleGHCFormat',
\})