added a lot of nvim settings

users/willifan/common/nixvim/default.nix

@@ -13,6 +13,7 @@
     ./lsp.nix
     ./navic.nix
     ./neotree.nix
+    ./settings.nix
     ./toggleterm.nix
     ./treesitter.nix
     ./whichkey.nix

users/willifan/common/nixvim/settings.nix

@@ -0,0 +1,101 @@
+{ ... }:
+{
+
+  programs.nixvim = {
+    config = {
+      extraConfigLuaPre =
+        # lua
+        ''
+          vim.fn.sign_define("diagnosticsignerror", { text = " ", texthl = "diagnosticerror", linehl = "", numhl = "" })
+          vim.fn.sign_define("diagnosticsignwarn", { text = " ", texthl = "diagnosticwarn", linehl = "", numhl = "" })
+          vim.fn.sign_define("diagnosticsignhint", { text = "󰌵", texthl = "diagnostichint", linehl = "", numhl = "" })
+          vim.fn.sign_define("diagnosticsigninfo", { text = " ", texthl = "diagnosticinfo", linehl = "", numhl = "" })
+        '';
+
+      clipboard = {
+        providers.wl-copy.enable = true;
+      };
+
+      opts = {
+        # Show line numbers
+        number = true;
+
+        # Show relative line numbers
+        relativenumber = true;
+
+        # Use the system clipboard
+        clipboard = "unnamedplus";
+
+        # Number of spaces that represent a <TAB>
+        tabstop = 2;
+        softtabstop = 2;
+
+        # Show tabline always
+        showtabline = 2;
+
+        # Use spaces instead of tabs
+        expandtab = true;
+
+        # Enable smart indentation
+        smartindent = true;
+
+        # Number of spaces to use for each step of (auto)indent
+        shiftwidth = 2;
+
+        # Enable break indent
+        breakindent = true;
+
+        # Highlight the screen line of the cursor
+        cursorline = true;
+
+        # Minimum number of screen lines to keep above and below the cursor
+        scrolloff = 8;
+
+        # Enable mouse support
+        mouse = "a";
+
+        # Set folding method to manual
+        foldmethod = "manual";
+
+        # Disable folding by default
+        foldenable = false;
+
+        # Wrap long lines at a character in 'breakat'
+        linebreak = true;
+
+        # Disable spell checking
+        spell = false;
+
+        # Disable swap file creation
+        swapfile = false;
+
+        # Time in milliseconds to wait for a mapped sequence to complete
+        timeoutlen = 300;
+
+        # Enable 24-bit RGB color in the TUI
+        termguicolors = true;
+
+        # Don't show mode in the command line
+        showmode = false;
+
+        # Open new split below the current window
+        splitbelow = true;
+
+        # Keep the screen when splitting
+        splitkeep = "screen";
+
+        # Open new split to the right of the current window
+        splitright = true;
+
+        # Hide command line unless needed
+        cmdheight = 0;
+
+        # Remove EOB
+        fillchars = {
+          eob = " ";
+        };
+      };
+    };
+  };
+
+}