nvim: plugins: Add nvim-lint

nvim/.config/nvim/after/ftplugin/lua.vim

@@ -0,0 +1 @@
+autocmd! BufWritePost <buffer> lua require('lint').try_lint()

nvim/.config/nvim/after/ftplugin/markdown.vim

@@ -13,3 +13,5 @@ let g:pandoc#formatting#textwidth           = 79
 let g:pandoc#formatting#mode                = "hA"
 let g:pandoc#completion#bib#mode            = 'citeproc'
 let g:pandoc#syntax#codeblocks#embeds#langs = ["c", "rust", "haskell", "literatehaskell=lhaskell", "bash=sh"]
+
+autocmd! BufWritePost <buffer> lua require('lint').try_lint()

nvim/.config/nvim/after/ftplugin/sh.vim

@@ -0,0 +1 @@
+autocmd! BufWritePost <buffer> lua require('lint').try_lint()

nvim/.config/nvim/after/plugin/nvim-lint.lua

@@ -0,0 +1,13 @@
+vim.api.nvim_set_keymap('n', '<LocalLeader>l', ':lua require(\'lint\').try_lint()<CR>', { noremap = true, unique = true })
+
+require('lint').linters_by_ft = {
+  haskell    = { 'hlint' },
+  javascript = { 'eslint' },
+  lua        = { 'luacheck' },
+  markdown   = { 'vale' },
+  pandoc     = { 'vale' },
+  python     = { 'flake8', 'mypy', 'pycodestyle', 'pylint' },
+  sh         = { 'shellcheck' },
+  typescript = { 'eslint' },
+  text       = { 'vale' },
+}

nvim/.config/nvim/lua/plugins.lua

@@ -89,6 +89,7 @@ local init = function ()
     'kosayoda/nvim-lightbulb',
   }
   -- Language support & syntax highlighting
+  use 'mfussenegger/nvim-lint'
   use 'simrat39/rust-tools.nvim'
   -- Coq
   use {