vim_config/config/ale.vim

""" ALE configuration

let s:user_dir = has('win32') ? expand('~/vimfiles') : expand('~/.vim')
let g:ale_completion_enabled = 0
let g:ale_sign_error = '->'
let g:ale_sign_warning = '~>'
" let g:ale_sign_error = '✘'
" let g:ale_sign_warning = '⚠'

let g:ale_elixir_elixir_ls_release = s:user_dir . './pack/vendor/start/vim-elixirls/elixir-ls/release'

let g:ale_linters = {
\   'javascript': ['eslint'],
\   'javascriptreact': ['eslint'],
\   'typescript': ['deno', 'tsserver', 'tslint'],
\   'typescriptreact': ['deno', 'tsserver', 'tslint'],
\   'python': ['pyls', 'pylint'],
\   'rust': ['rls'],
\   'elixir': ['credo', 'elixir-ls'],
\   'go': ['gopls'],
\   'json': ['jsonlint'],
\   'dockerfile': ['hadolint'],
\   'vala': ['vala-language-server'],
\   'scss': ['eslint'],
\   'elm': ['elm_ls'],
\   'sql': ['sql-lint'],
\}

let g:ale_fixers = {
\   'javascript': ['prettier'],
\   'typescript': ['prettier'],
\   'javascriptreact': ['prettier'],
\   'typescriptreact': ['prettier'],
\   'python': ['black', 'pyls'],
\   'rust': ['rustfmt'],
\   'elixir': ['mix_format'],
\   'graphql': ['prettier'],
\   'perl': ['perltidy'],
\   'go': ['gofmt'],
\   'json': ['prettier'],
\   'vala': ['uncrustify'],
\   'dart': ['dartfmt'],
\   'scss': ['prettier'],
\}

function! s:getValaProjectRoot(buffer) abort
    let l:cur_path_abs = fnamemodify(a:buffer, ':p:h')
    let l:maybe_doap_file = expand(l:cur_path_abs . s:sep . '*.doap')
    if !empty(l:maybe_doap_file)
        return l:cur_path_abs
    endif

    for l:path in ale#path#Upwards(expand('#' . a:buffer . ':p:h'))
        if filereadable(expand(l:path . '*.doap'))
            return l:path
        endif
    endfor

    return ''
endfunction

packloadall

call ale#linter#Define('vala', {
\   'name': 'vala-language-server',
\   'lsp': 'stdio',
\   'output_stream': 'both',
\   'executable': '/usr/bin/vala-language-server',
\   'command': '%e',
\   'project_root': function('s:getValaProjectRoot'),
\   'callback': 'ale#handlers#unix#HandleAsWarning',
\})

let g:ale_rust_rls_config = {
\   'rust': {
\     'clippy_preference': 'on'
\   }
\ }

let g:ale_echo_msg_error_str = 'Err'
let g:ale_echo_msg_warning_str = 'Warn'
let g:ale_echo_msg_format = '[%linter%] %s [%severity%]'

let g:ale_go_langserver_executable = 'gopls'
" let g:ale_go_revive_executable = '/usr/bin/revive'
" let g:ale_go_revive_options = '-config ~/.vim/revive.toml'

let g:airline#extensions#ale#enabled = 1

let g:ale_completion_enabled = 1
let g:ale_lint_on_enter = 0
let g:ale_lint_on_text_changed = 'never'
highlight ALEErrorSign ctermbg=NONE ctermfg=red
highlight ALEWarningSign ctermbg=NONE ctermfg=yellow
let g:ale_linters_explicit = 1
let g:ale_lint_on_save = 1
let g:ale_fix_on_save = 1

" let g:ale_set_balloons = 1
let g:ale_hover_to_preview = 1
let g:ale_float_preview = 1
let g:ale_floating_window_border = ['│', '─', '╭', '╮', '╯', '╰']

set omnifunc=ale#completion#OmniFunc