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/home/opdavies/hosts/PW05CH3L.nix

@@ -2,6 +2,7 @@
   features = {
     cli = {
       direnv.enable = true;
+      tmux-sessionizer.enable = true;
     };
 
     desktop = {

nix/home/opdavies/hosts/lemp11.nix

@@ -5,6 +5,7 @@
     cli = {
       bluetuith.enable = true;
       direnv.enable = true;
+      tmux-sessionizer.enable = true;
     };
 
     desktop = {

nix/lib/shared/home-manager-packages.nix

@@ -17,7 +17,6 @@ let
     import ./scripts/export-video-list.nix { inherit pkgs username; }
   );
   run = writeShellApplication (import ./scripts/run.nix { inherit pkgs; });
-  t = writeShellApplication (import ./scripts/t.nix { inherit pkgs; });
   timer = writeShellApplication (import ./scripts/timer.nix);
 in
 with pkgs;
@@ -69,7 +68,6 @@ with pkgs;
   # Scripts.
   deliver
   run
-  t
 ]
 ++ pkgs.lib.optionals desktop [
   # Scripts.

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() {

nix/pkgs/default.nix

@@ -5,6 +5,7 @@ let
 in
 {
   build-glove80 = callPackage ./build-glove80.nix { };
+  custom-tmux-sessionizer = callPackage ./tmux-sessionizer.nix { };
   notify-battery = callPackage ./notify-battery.nix { };
 
   vimPlugins = prev.vimPlugins // {

nix/pkgs/tmux-sessionizer.nix

@@ -1,12 +1,14 @@
 { pkgs }:
 
-{
-  name = "t";
+pkgs.writeShellApplication {
+  name = "custom-tmux-sessionizer";
 
   runtimeInputs = with pkgs; [ tmux ];
 
   text = ''
-    # https://github.com/ThePrimeagen/tmux-sessionizer.
+    set +o nounset
+
+    # Based on https://github.com/ThePrimeagen/tmux-sessionizer.
 
     switch_to() {
       if [[ -z $TMUX ]]; then