Don't use which, use command -v instead

tasks.yaml

@@ -1,19 +1,19 @@
 ---
 - name: zsh install packages
+  become: '{{package_become}}'
   package:
     name: zsh
     state: present
 
 - name: zsh install Debian packages
   when: ansible_os_family == "Debian"
-  apt:
-    name: '{{item}}'
-    state: present
   become: true
-  with_items:
+  apt:
+    name:
       - zsh-doc
       - pinentry-curses
       - unzip
+    state: present
 
 - name: zsh clone plugin repos
   git:
@@ -80,7 +80,7 @@
       dest: ~/.local/bin/$
 
 - name: zsh get absolute path
-  shell: which zsh
+  shell: command -v zsh
   register: zsh
   changed_when: false