2 last months

hosts/totsugeki/home-manager/development/nixvim/completion.nix

@@ -0,0 +1,104 @@
+{ inputs, lib, ... }: {
+  programs.nixvim = {
+    extraConfigLua = ''
+      function has_words_before()
+          unpack = unpack or table.unpack
+          local line, col = unpack(vim.api.nvim_win_get_cursor(0))
+          return col ~= 0
+              and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
+      end
+      function leave_snippet()
+          if
+              ((vim.v.event.old_mode == "s" and vim.v.event.new_mode == "n") or vim.v.event.old_mode == "i")
+              and require("luasnip").session.current_nodes[vim.api.nvim_get_current_buf()]
+              and not require("luasnip").session.jump_active
+          then
+              require("luasnip").unlink_current()
+          end
+      end
+
+      -- stop snippets when you leave to normal mode
+      vim.api.nvim_command([[
+          autocmd ModeChanged * lua leave_snippet()
+      ]])
+    '';
+    plugins = {
+      cmp = {
+        enable = true;
+        settings = {
+          formatting.format = lib.mkForce ''
+            function(entry, vim_item)
+                if vim.tbl_contains({ "path" }, entry.source.name) then
+                    local icon, hl_group =
+                        require("nvim-web-devicons").get_icon(entry:get_completion_item().label)
+                    if icon then
+                        vim_item.kind = icon
+                        vim_item.kind_hl_group = hl_group
+                        return vim_item
+                    end
+                end
+                return require("lspkind").cmp_format({ with_text = true })(entry, vim_item)
+            end
+          '';
+          mapping = {
+            "<CR>" = "cmp.mapping.confirm({ select = false })";
+            "<Tab>" = ''
+              cmp.mapping(
+                  function(callback)
+                      if cmp.visible() then
+                          cmp.select_next_item()
+                      elseif require("luasnip").expand_or_locally_jumpable() then
+                          require("luasnip").expand_or_jump()
+                      elseif has_words_before() then
+                          cmp.complete()
+                      else
+                          callback()
+                      end
+                  end
+              , {"i", "s"})
+            '';
+            "<S-Tab>" = ''
+              cmp.mapping(
+                  function(callback)
+                      if cmp.visible() then
+                          cmp.select_prev_item()
+                      elseif require("luasnip").jumpable(-1) then
+                          require("luasnip").jump(-1)
+                      else
+                          callback()
+                      end
+                  end
+              , {"i", "s"})
+            '';
+          };
+          snippet.expand = ''
+            function(args)
+                require("luasnip").lsp_expand(args.body)
+            end
+          '';
+          sources = [
+            {
+              name = "luasnip";
+              priority = 40;
+            }
+            {
+              name = "nvim_lsp";
+              priority = 30;
+              entry_filter = ''
+                function(entry, _)
+                    return entry:get_kind() ~= require("cmp").lsp.CompletionItemKind.Text
+                end
+              '';
+            }
+          ];
+        };
+      };
+      lspkind = { enable = true; };
+      luasnip = {
+        enable = true;
+        fromVscode = [ { } ];
+      };
+      friendly-snippets.enable = true;
+    };
+  };
+}