vim_config/config/before/ale.vim

""" ALE configuration

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 = '/usr/lib/elixir-ls/'
let g:ale_java_javalsp_executable = '/usr/bin/java-language-server'

let g:ale_linters = {
\   'javascript': ['eslint'],
\   'javascriptreact': ['eslint'],
\   'typescript': ['tsserver', 'tslint'],
\   'typescriptreact': ['tsserver', 'tslint'],
\   'python': ['pyls', 'pylint'],
\   'rust': ['rls'],
\   'elixir': ['elixir-ls'],
\   'go': ['gopls'],
\   'json': ['jsonlint'],
\   'dockerfile': ['hadolint'],
\   'vala': ['vala-language-server'],
\   'scss': ['eslint'],
\   'elm': ['elm_ls'],
\   'sql': ['sql-lint'],
\   'promql': ['promql-langserver'],
\   'java': ['javalsp'],
\   'ps1': ['powershell'],
\}

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'],
\}

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 = ['│', '─', '╭', '╮', '╯', '╰']