add file lists to ghostty and neovim src install

tasks/src/ghostty.yml

@@ -1,6 +1,24 @@
 # vim: set filetype=yaml.ansible :
 ---
+- name: Clean existing install
+  when:
+    - ghostty.clean
+  become: "{{ ext_become }}"
+  loop: "{{ ghostty.installed_files }}"
+  loop_control:
+    loop_var: file
+  ansible.builtin.file:
+    state: absent
+    path: "{{ path.prefix }}/{{ file }}"
+
+- name: Check if ghostty is installed
+  register: stat_ghostty_inst
+  ansible.builtin.stat:
+    path: "{{ path.prefix }}/bin/ghostty"
+
 - name: Install and build source for {{ pkg }}
+  when:
+    - not stat_ghostty_inst.stat.exists
   block:
     - name: Clone git repository {{ pkg }}
       ansible.builtin.git:
@@ -14,4 +32,5 @@
       register: c_ghostty_build
       ansible.builtin.command:
         chdir: "{{ d_tempdir.path }}/ghostty"
+        creates: "{{ path.prefix }}/bin/ghostty"
         cmd: "zig build -p {{ path.prefix }} -Doptimize={{ ghostty.optimize }}"