Refactor back to a more modular configuration

modules/home-manager/coding/neovim/config/plugin/completion.lua

@@ -0,0 +1,76 @@
+local cmp = require "cmp"
+local ls = require "luasnip"
+
+vim.opt.shortmess:append "c"
+
+cmp.setup {
+  snippet = {
+    expand = function(args)
+      ls.lsp_expand(args.body)
+    end,
+  },
+
+  mapping = cmp.mapping.preset.insert {
+    ["<C-e>"] = cmp.mapping.close(),
+
+    ["<C-h>"] = cmp.mapping(function()
+      if ls.locally_jumpable(-1) then
+        ls.jump(-1)
+      end
+    end, { "i", "s" }),
+
+    ["<C-l>"] = cmp.mapping(function()
+      if ls.expand_or_locally_jumpable() then
+        ls.expand_or_jump()
+      end
+    end, { "i", "s" }),
+
+    ["<C-y>"] = cmp.mapping.confirm { select = true },
+    ["<tab>"] = cmp.config.disable,
+  },
+
+  sources = {
+    { name = "nvim_lsp" },
+    { name = "nvim_lua" },
+    { name = "luasnip" },
+    { name = "buffer" },
+    { name = "calc" },
+  },
+
+  sorting = {
+    comparators = {
+      cmp.config.compare.offset,
+      cmp.config.compare.exact,
+      cmp.config.compare.score,
+      cmp.config.compare.kind,
+      cmp.config.compare.sort_text,
+      cmp.config.compare.length,
+      cmp.config.compare.order,
+    },
+  },
+
+  formatting = {
+    format = require("lspkind").cmp_format {
+      with_text = true,
+      menu = {
+        buffer = "[buf]",
+        cmp_tabnine = "[tn]",
+        luasnip = "[snip]",
+        nvim_lsp = "[lsp]",
+        nvim_lua = "[lua]",
+        path = "[path]",
+      },
+    },
+  },
+
+  experimental = {
+    native_menu = false,
+  },
+}
+
+cmp.setup.filetype({ "mysql", "sql" }, {
+  sources = {
+    { name = "vim-dadbod-completion" },
+    { name = "buffer" },
+  },
+})