Rename t to tmux-sessionizer

This matches ThePrimeagen's script that mine is based on and that I'll
probably switch to in the future.

I've added to the Nix store as custom-tmux-sessionizer so it doesn't
conflict with the tmux-sessionzer packages that's already in the store.

nix/modules/home-manager/features/cli/default.nix

@@ -19,6 +19,15 @@
         ;
     })
 
+    (import ./tmux-sessionizer.nix {
+      inherit
+        config
+        lib
+        pkgs
+        self
+        ;
+    })
+
     ./bat.nix
     ./bin.nix
     ./bluetuith.nix

nix/modules/home-manager/features/cli/tmux-sessionizer.nix

@@ -0,0 +1,32 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+{
+  options.features.cli.tmux-sessionizer.enable = lib.mkEnableOption "Enable tmux-sessionizer";
+
+  config = lib.mkIf config.features.cli.tmux-sessionizer.enable {
+    home.packages = with pkgs; [ custom-tmux-sessionizer ];
+
+    home.file.".tmux-sessionizer".source = "${
+      pkgs.writeShellApplication {
+        name = ".tmux-sessionizer";
+
+        runtimeInputs = with pkgs; [
+          tmux
+        ];
+
+        text = ''
+          set +o nounset
+
+          tmux new-window -d -n scratch
+          nvim
+          clear
+        '';
+      }
+    }/bin/.tmux-sessionizer";
+  };
+}

nix/modules/home-manager/features/cli/tmux.nix

@@ -72,8 +72,7 @@ in
         set-option -g pane-active-border-style "fg=#1f2335"
         set-option -g pane-border-style "fg=#1f2335"
 
-        bind-key -r f run-shell "tmux new-window t"
-
+        bind-key -r f run-shell "tmux new-window custom-tmux-sessionizer"
 
         if-shell "[ -f ~/.tmux.conf.local ]" 'source ~/.tmux.conf.local'
       '';

nix/modules/home-manager/features/cli/zsh.nix

@@ -56,7 +56,7 @@
       zstyle ":completion:*" matcher-list "" "m:{a-zA-Z}={A-Za-z}" "r:|=*" "l:|=* r:|=*"
       autoload -Uz compinit && compinit
 
-      bindkey -s ^f "t\n"
+      bindkey -s ^f "custom-tmux-sessionizer\n"
       bindkey -s ^v "nvim\n"
 
       clear-ls-all() {