feat(tmux): add tmux-sessionizer

modules/programs/tmux.nix

@@ -3,6 +3,37 @@
 with lib;
 let
   cfg = config.my.programs.tmux;
+
+  tmux-sessionizer = pkgs.writeShellApplication {
+    name = "ts";
+    runtimeInputs = with pkgs; [ tmux findutils coreutils procps fd ];
+    text = ''
+      #!/usr/bin/env bash
+
+      if [[ $# -eq 1 ]]; then
+          selected=$1
+      else
+          selected=$(fd -gH '.git' ~/ --min-depth 1 --max-depth 5 --type d --prune --exec dirname {} | fzf)
+      fi
+
+      if [[ -z $selected ]]; then
+          exit 0
+      fi
+
+      selected_name=$(basename "$selected" | tr . _)
+
+      if ! tmux has-session -t="$selected_name" 2> /dev/null; then
+        tmux new-session -ds "$selected_name" -c "$selected"
+      fi
+
+      if [[ -z ''${TMUX+x} ]]; then
+        tmux attach -t "$selected_name"
+      else
+        tmux switch-client -t "$selected_name"
+      fi
+    '';
+  };
+
 in
 {
   options.my.programs.tmux = {
@@ -12,7 +43,10 @@ in
 
   config = mkIf cfg.enable {
     my.shell.abbreviations.t = "tmux";
-    home-manager.users.moritz.programs.tmux = {
+
+    home-manager.users.moritz.home.packages = [ tmux-sessionizer ];
+    home-manager.users.moritz.programs = {
+      tmux = {
         enable = true;
         clock24 = true;
         customPaneNavigationAndResize = true;
@@ -27,7 +61,6 @@ in
           yank
         ];
       };
-    home-manager.users.moritz.programs = {
       fzf.tmux.enableShellIntegration = true;
       fish.interactiveShellInit =
         let
@@ -39,11 +72,11 @@ in
             if ! fish_is_root_user && test "$TERM_PROGRAM" != 'vscode' && ${insideVariableMissing}
                 if test -z $tmux_autostarted
                     set -x tmux_autostarted true
-                    tmux a
+                    ts
                 end
             end
           '';
-    };
-  };
 
+    };
+  };
 }