update

init.vim

@@ -33,8 +33,9 @@ source ~/.config/nvim/plugin-confs/lsp-kind.lua
 source ~/.config/nvim/plugin-confs/lspconfig.lua
 source ~/.config/nvim/plugin-confs/lsplines.lua
 source ~/.config/nvim/plugin-confs/null-ls.lua
-source ~/.config/nvim/plugin-confs/lsp-format.lua
 source ~/.config/nvim/plugin-confs/nvim-cmp.lua
+source ~/.config/nvim/plugin-confs/lsp-format.lua
+source ~/.config/nvim/plugin-confs/nvim-lint.lua
 source ~/.config/nvim/plugin-confs/luasnip.lua
 source ~/.config/nvim/plugin-confs/fidget.lua
 source ~/.config/nvim/plugin-confs/rainbow-delimiters.lua

lua/plugins.lua

@@ -277,6 +277,7 @@ require('packer').startup(function(use)
     use { 'neovim/nvim-lspconfig' }
     use { 'onsails/lspkind-nvim' }
     use { 'lukas-reineke/lsp-format.nvim' }
+    use 'mfussenegger/nvim-lint'
 
     -- DAP {{{
 

plugin-confs/lsp-format.lua

@@ -1,2 +1 @@
 require("lsp-format").setup {}
-require("lspconfig").gopls.setup { on_attach = require("lsp-format").on_attach }

plugin-confs/nvim-lint.lua

@@ -0,0 +1,21 @@
+require('lint').linters_by_ft = {
+    markdown = { 'markdownlint' },
+    lua = { 'luacheck', 'luac' },
+    vim = { 'vint' },
+    sh = { 'shellcheck' },
+    pyton = { 'pycodestyle', 'black', 'pydocstyle', 'pylint' },
+    json = { 'jsonlint' },
+    yaml = { 'yamllint' }
+}
+
+vim.api.nvim_create_autocmd({ "BufWritePost" }, {
+    callback = function()
+        -- try_lint without arguments runs the linters defined in `linters_by_ft`
+        -- for the current filetype
+        require("lint").try_lint()
+
+        -- You can call `try_lint` with a linter name or a list of names to always
+        -- run specific linters, independent of the `linters_by_ft` configuration
+        -- require("lint").try_lint("cspell")
+    end,
+})