pkg(nixvim): Add blink-cmp, lazydev, mini-ai, mini-pairs and ts-comments plugins to improve coding UX

pkgs/nixvim/coding/mini-pairs.nix

@@ -0,0 +1,71 @@
+{...}: {
+  youthlic.plugins.mini-pairs = {
+    enable = true;
+    settings = {
+      modes = {
+        insert = true;
+        command = true;
+        terminal = false;
+      };
+    };
+    luaConfig.post =
+      #lua
+      ''
+        do
+          local opts = {
+            skip_next = [=[[%w%%'%[%"%.%`%$]]=],
+            skip_ts = { "string" },
+            skip_unbalanced = true,
+            markdown = true,
+          }
+          _M.on_load("snacks", function()
+            vim.schedule(function()
+              Snacks.toggle({
+                name = "Mini Pairs",
+                get = function()
+                  return not vim.g.minipairs_disable
+                end,
+                set = function(state)
+                  vim.g.minipairs_disable = not state
+                end,
+              }):map("<leader>up")
+            end)
+          end)
+          local pairs = require("mini.pairs")
+          local open = pairs.open
+          pairs.open = function(pair, neigh_pattern)
+            if vim.fn.getcmdline() ~= "" then
+              return open(pair, neigh_pattern)
+            end
+            local o, c = pair:sub(1, 1), pair:sub(2, 2)
+            local line = vim.api.nvim_get_current_line()
+            local cursor = vim.api.nvim_win_get_cursor(0)
+            local next = line:sub(cursor[2] + 1, cursor[2] + 1)
+            local before = line:sub(1, cursor[2])
+            if opts.markdown and o == "`" and vim.bo.filetype == "markdown" and before:match("^%s*``") then
+              return "`\n``" .. vim.api.nvim_replace_termcodes("<up>", true, true, true)
+            end
+            if opts.skip_next and next ~= "" and next:match(opts.skip_next) then
+              return o
+            end
+            if opts.skip_ts and #opts.skip_ts > 0 then
+              local ok, captures = pcall(vim.treesitter.get_captures_at_pos, 0, cursor[1] - 1, math.max(cursor[2] - 1, 0))
+              for _, capture in ipairs(ok and captures or {}) do
+                if vim.tbl_contains(opts.skip_ts, capture.capture) then
+                  return o
+                end
+              end
+            end
+            if opts.skip_unbalanced and next == c and c ~= o then
+              local _, count_open = line:gsub(vim.pesc(pair:sub(1, 1)), "")
+              local _, count_close = line:gsub(vim.pesc(pair:sub(2, 2)), "")
+              if count_close > count_open then
+                return o
+              end
+            end
+            return open(pair, neigh_pattern)
+          end
+        end
+      '';
+  };
+}