/usr/share/vim/vim80/compiler/ghc.vim is in vim-runtime 2:8.0.1453-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | " Vim compiler file
" Compiler: GHC Haskell Compiler
" Maintainer: Daniel Campoverde <alx@sillybytes.net>
" Latest Revision: 2016-11-29
if exists("current_compiler")
finish
endif
let current_compiler = "ghc"
let s:cpo_save = &cpo
set cpo&vim
CompilerSet errorformat=
\%-G%.%#:\ build,
\%-G%.%#preprocessing\ library\ %.%#,
\%-G[%.%#]%.%#,
\%E%f:%l:%c:\ %m,
\%-G--%.%#
if exists('g:compiler_ghc_ignore_unmatched_lines')
CompilerSet errorformat+=%-G%.%#
endif
let &cpo = s:cpo_save
unlet s:cpo_save
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