include i3 and nvim configuration in the central repository, rather than keep them in their seperate respective ones.

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

@@ -0,0 +1,59 @@
+---@module 'lazy'
+---@type LazySpec
+return { {
+	'mfussenegger/nvim-lint',
+	event = { 'BufWritePost', 'BufReadPost', 'TextChanged' },
+	---@module 'lint'
+	opts = {
+		---@type table<string, string[]>
+		linters_by_ft = {
+			c    = { 'clangtidy' },
+			cpp  = { 'clangtidy' },
+			sh   = { 'shellcheck' },
+			glsl = { 'glslang' },
+		},
+		linters = {
+			glslang = {
+				cmd = 'glslangValidator',
+				stdin = false,
+				args = { '-C' },
+				ignore_exitcode = true,
+				parser = function(output)
+					local diags = {}
+					for _, line in ipairs(vim.split(output, '\n')) do
+						local f, lnum, sev, msg = line:match(
+						'^([^:]+):(%d+):%s+([^:]+):%s+(.+)$')            -- file:line: severity: message
+						if not f then sev, f, lnum, msg = line:match(
+							'^(%w+):%s+([^:]+):(%d+):%s+(.+)$') end  -- severity: file:line: message
+
+						if lnum then
+							local s = sev:lower() == 'error'
+							    and vim.diagnostic.severity.ERROR
+							    or vim.diagnostic.severity.WARN
+							table.insert(diags, {
+								lnum = tonumber(lnum) - 1,
+								col = 0,
+								message = msg,
+								source = 'glslang',
+								severity = s
+							})
+						end
+					end
+					return diags
+				end
+			}
+		}
+	},
+	config = function(_, opts)
+		local lint = require('lint')
+		lint.linters_by_ft = opts.linters_by_ft
+
+		for name, linter in pairs(opts.linters) do
+			lint.linters[name] = linter
+		end
+
+		-- autocommand for linting
+		Autocmd({ 'BufWritePost', 'BufWinEnter', 'TextChanged' },
+			{ callback = function() lint.try_lint() end });
+	end
+} }