Install borgbackup from source for S3 functionality

Author: jb3

ansible/roles/borg/tasks/main.yml

@@ -1,8 +1,14 @@
 ---
-- name: Install Borg Backup
+- name: Install borg dependencies
   package:
     name:
-      - borgbackup2
+      - liblz4-dev
+      - liblz4-1
+      - libzstd-dev
+      - libzstd1
+      - libacl1-dev
+      - libacl1
+      - libxxhash0
     state: present
   tags:
     - role::borg
@@ -24,11 +30,12 @@
   tags:
     - role::borg
 
-- name: Install borgmatic into virtual environment
+- name: Install borg & dependencies to virtual environment
   pip:
     virtualenv: "{{ borg_virtualenv }}"
-    name: borgmatic
-    version: "{{ borg_version | default(omit) }}"
+    name:
+      - borgbackup[s3] @ git+https://github.com/borgbackup/borg.git@{{ borg_git_version }}
+      - borgmatic=={{ borgmatic_version }}
     state: present
   tags:
     - role::borg

ansible/roles/borg/vars/main/main.yml

@@ -3,7 +3,9 @@ borg_user: borg
 borg_home: /var/lib/borg
 borg_virtualenv: "{{ borg_home }}/borgmatic-venv"
 
-borg_version: "2.0.11"
+# Pinned to a specific commit for S3 compatibility.
+borg_git_version: "1373b30ba8e6b88f6264dc57f6a8da46d8b2e80f"
+borgmatic_version: "2.0.11"
 
 # see https://wiki.archlinux.org/title/Systemd/Timers
 # or for more details https://www.freedesktop.org/software/systemd/man/latest/systemd.time.html