replace tmux with wezterm and add smart-splits navigation to neovim

home/base/programs/nixvim/default.nix

@@ -12,6 +12,7 @@
     ./plugins/neo-tree.nix
     ./plugins/which-key.nix
     ./plugins/project-nvim.nix
+    ./plugins/smart-splits.nix
     ./plugins/misc.nix
   ];
 

home/base/programs/nixvim/plugins/misc.nix

@@ -4,6 +4,5 @@
   programs.nixvim.plugins = {
     nvim-autopairs.enable = true;
     direnv.enable = true;
-    tmux-navigator.enable = true;
   };
 }

home/base/programs/nixvim/plugins/smart-splits.nix

@@ -0,0 +1,117 @@
+{
+  programs.nixvim = {
+    plugins.smart-splits = {
+      enable = true;
+      settings = {
+        ignored_events = [
+          "BufEnter"
+          "WinEnter"
+        ];
+        resize_mode = {
+          quit_key = "<ESC>";
+          resize_keys = [
+            "h"
+            "j"
+            "k"
+            "l"
+          ];
+          silent = true;
+        };
+      };
+    };
+
+    keymaps = [
+      {
+        action = "<cmd>lua require('smart-splits').resize_left()<CR>";
+        key = "<A-h>";
+        options = {
+          desc = "Resize split to the left";
+        };
+      }
+      {
+        action = "<cmd>lua require('smart-splits').resize_down()<CR>";
+        key = "<A-j>";
+        options = {
+          desc = "Resize split downwards";
+        };
+      }
+      {
+        action = "<cmd>lua require('smart-splits').resize_up()<CR>";
+        key = "<A-k>";
+        options = {
+          desc = "Resize split upwards";
+        };
+      }
+      {
+        action = "<cmd>lua require('smart-splits').resize_right()<CR>";
+        key = "<A-l>";
+        options = {
+          desc = "Resize split to the right";
+        };
+      }
+      {
+        action = "<cmd>lua require('smart-splits').move_cursor_left()<CR>";
+        key = "<C-h>";
+        options = {
+          desc = "Move cursor to the left split";
+        };
+      }
+      {
+        action = "<cmd>lua require('smart-splits').move_cursor_down()<CR>";
+        key = "<C-j>";
+        options = {
+          desc = "Move cursor to the downward split";
+        };
+      }
+      {
+        action = "<cmd>lua require('smart-splits').move_cursor_up()<CR>";
+        key = "<C-k>";
+        options = {
+          desc = "Move cursor to the upward split";
+        };
+      }
+      {
+        action = "<cmd>lua require('smart-splits').move_cursor_right()<CR>";
+        key = "<C-l>";
+        options = {
+          desc = "Move cursor to the right split";
+        };
+      }
+      {
+        action = "<cmd>lua require('smart-splits').move_cursor_previous()<CR>";
+        key = "<C-\\>";
+        options = {
+          desc = "Move cursor to the previous split";
+        };
+      }
+      {
+        action = "<cmd>lua require('smart-splits').swap_buf_left()<CR>";
+        key = "<leader><leader>h>";
+        options = {
+          desc = "Swap buffer to the left";
+        };
+      }
+      {
+        action = "<cmd>lua require('smart-splits').swap_buf_down()<CR>";
+        key = "<leader><leader>j>";
+        options = {
+          desc = "Swap buffer downwards";
+        };
+      }
+      {
+        action = "<cmd>lua require('smart-splits').swap_buf_up()<CR>";
+        key = "<leader><leader>k>";
+        options = {
+          desc = "Swap buffer upwards";
+        };
+      }
+      {
+        action = "<cmd>lua require('smart-splits').swap_buf_right()<CR>";
+        key = "<leader><leader>l>";
+        options = {
+          desc = "Swap buffer to the right";
+        };
+      }
+    ];
+  };
+}

home/base/programs/wezterm.nix

@@ -4,13 +4,87 @@
   programs.wezterm = {
     enable = true;
     extraConfig = ''
-      local wezterm = require 'wezterm'
+      local w = require('wezterm')
+
+      -- if you are *NOT* lazy-loading smart-splits.nvim (recommended)
+      local function is_vim(pane)
+        -- this is set by the plugin, and unset on ExitPre in Neovim
+        return pane:get_user_vars().IS_NVIM == 'true'
+      end
+
+      -- if you *ARE* lazy-loading smart-splits.nvim (not recommended)
+      -- you have to use this instead, but note that this will not work
+      -- in all cases (e.g. over an SSH connection). Also note that
+      -- `pane:get_foreground_process_name()` can have high and highly variable
+      -- latency, so the other implementation of `is_vim()` will be more
+      -- performant as well.
+      local function is_vim(pane)
+        -- This gsub is equivalent to POSIX basename(3)
+        -- Given "/foo/bar" returns "bar"
+        -- Given "c:\\foo\\bar" returns "bar"
+        local process_name = string.gsub(pane:get_foreground_process_name(), '(.*[/\\])(.*)', '%2')
+        return process_name == 'nvim' or process_name == 'vim'
+      end
+
+      local direction_keys = {
+        h = 'Left',
+        j = 'Down',
+        k = 'Up',
+        l = 'Right',
+      }
+
+      local function split_nav(resize_or_move, key)
+        return {
+          key = key,
+          mods = resize_or_move == 'resize' and 'META' or 'CTRL',
+          action = w.action_callback(function(win, pane)
+            if is_vim(pane) then
+              -- pass the keys through to vim/nvim
+              win:perform_action({
+                SendKey = { key = key, mods = resize_or_move == 'resize' and 'META' or 'CTRL' },
+              }, pane)
+            else
+              if resize_or_move == 'resize' then
+                win:perform_action({ AdjustPaneSize = { direction_keys[key], 3 } }, pane)
+              else
+                win:perform_action({ ActivatePaneDirection = direction_keys[key] }, pane)
+              end
+            end
+          end),
+        }
+      end
 
       return {
           front_end = "WebGpu",
-        enable_tab_bar = false,
+          hide_tab_bar_if_only_one_tab = true,
+          show_new_tab_button_in_tab_bar = false,
           enable_wayland = false,
           harfbuzz_features = { "ss01", "ss03" },
+
+          leader = { key = " ", mods = "CTRL", timeout_milliseconds = 1000 },
+
+          keys = {
+              {
+                mods = "LEADER",
+                key = "-",
+                action = wezterm.action.SplitVertical { domain = "CurrentPaneDomain" }
+              },
+              {
+                mods = "LEADER",
+                key = "=",
+                action = wezterm.action.SplitHorizontal { domain = "CurrentPaneDomain" }
+              },
+            -- move between split panes
+            split_nav('move', 'h'),
+            split_nav('move', 'j'),
+            split_nav('move', 'k'),
+            split_nav('move', 'l'),
+            -- resize panes
+            split_nav('resize', 'h'),
+            split_nav('resize', 'j'),
+            split_nav('resize', 'k'),
+            split_nav('resize', 'l'),
+          },
       }
     '';
   };

home/base/shell/default.nix

@@ -6,7 +6,6 @@
     ./starship.nix 
     ./zoxide.nix 
     ./direnv.nix 
-    ./tmux.nix
     ./zellij.nix
   ];
 }

home/base/shell/fish.nix

@@ -16,7 +16,7 @@ in
       fish_vi_key_bindings # Enable Vi mode
       fish_config theme choose "Catppuccin Frappe"
     '';
-    shellAbbrs = { cd = "z"; ngc = "sudo nix-collect-garbage -d"; tmux = "tmux new -A -s main"; };
+    shellAbbrs = { cd = "z"; ngc = "sudo nix-collect-garbage -d"; };
     plugins = [ { name = "fzf"; src = pkgs.fishPlugins.fzf.src; } ];
   };
 

home/base/shell/tmux.nix

@@ -1,46 +0,0 @@
-{ pkgs, ... }:
-
-{
-  programs.tmux = {
-    enable = true;
-    prefix = "C-space";
-    escapeTime = 10;
-    clock24 = true;
-    keyMode = "vi";
-    mouse =  true;
-    baseIndex = 1;
-    extraConfig = ''
-      set-option -a terminal-features "''${TERM}:RGB"
-    '';
-    plugins = with pkgs; [
-      {
-        plugin = tmuxPlugins.catppuccin;
-        extraConfig = ''
-          set -g @catppuccin_window_left_separator ""
-          set -g @catppuccin_window_right_separator " "
-          set -g @catppuccin_window_middle_separator " █"
-          set -g @catppuccin_window_number_position "right"
-
-          set -g @catppuccin_window_default_fill "number"
-          set -g @catppuccin_window_default_text "#W"
-
-          set -g @catppuccin_window_current_fill "number"
-          set -g @catppuccin_window_current_text "#W"
-
-          set -g @catppuccin_status_modules_right "directory user host session"
-          set -g @catppuccin_status_left_separator  " "
-          set -g @catppuccin_status_right_separator ""
-          set -g @catppuccin_status_fill "icon"
-          set -g @catppuccin_status_connect_separator "no"
-
-          set -g @catppuccin_directory_text "#{pane_current_path}"
-
-          set -g @catppuccin_flavor 'frappe'
-        '';
-      }
-      tmuxPlugins.vim-tmux-navigator
-      tmuxPlugins.yank
-    ];
-  };
-  programs.fzf.tmux.enableShellIntegration = true;
-}