Support missing custom binary directories

tasks/build.yml

@@ -24,6 +24,28 @@
     seriatim_stored_fingerprint: ""
     seriatim_stored_checksum: ""
 
+- name: Inspect Seriatim binary parent directory
+  ansible.builtin.stat:
+    path: "{{ seriatim_binary_path | dirname }}"
+  register: seriatim_binary_parent_stat
+
+- name: Require an existing Seriatim binary parent to be a directory
+  ansible.builtin.assert:
+    that:
+      - not seriatim_binary_parent_stat.stat.exists or seriatim_binary_parent_stat.stat.isdir
+    fail_msg: >-
+      Seriatim binary parent exists but is not a directory:
+      {{ seriatim_binary_path | dirname }}.
+
+- name: Create missing Seriatim binary parent directory
+  ansible.builtin.file:
+    path: "{{ seriatim_binary_path | dirname }}"
+    state: directory
+    owner: root
+    group: root
+    mode: "0755"
+  when: not seriatim_binary_parent_stat.stat.exists
+
 - name: Inspect installed Seriatim binary
   ansible.builtin.stat:
     path: "{{ seriatim_binary_path }}"