Fix Boussole initial compile and watcher issues

See merge request tildes/tildes!163

ansible/roles/boussole/files/requirements.txt

@@ -0,0 +1,18 @@
+# Freeze Boussole otherwise the watcher doesn't work
+# https://github.com/sveetch/boussole/issues/48
+
+# Frozen requirement versions from '2.1.2' installation
+boussole==2.1.2
+click==8.1.7
+colorama==0.4.6
+colorlog==6.7.0
+flake8==6.1.0
+libsass==0.22.0
+livereload==2.6.3
+pyaml==23.9.5
+pytest==7.4.2
+Sphinx==7.2.5
+sphinx-rtd-theme==1.3.0
+tox==4.11.3
+twine==4.0.2
+watchdog==3.0.0

ansible/roles/boussole/tasks/main.yml

@@ -1,9 +1,22 @@
 ---
-- name: Create venv and install boussole with pip
+- name: Ensure boussole venv directory exists
+  file:
+    path: "{{ boussole_venv_dir }}"
+    state: "directory"
+
+- name: Create boussole requirements.txt file
+  copy:
+    src: "requirements.txt"
+    dest: "{{ boussole_venv_dir }}/requirements.txt"
+    owner: "{{ app_username }}"
+    group: "{{ app_username }}"
+    mode: 0644
+
+- name: Create boussole venv and install packages
   pip:
     virtualenv: "{{ boussole_venv_dir }}"
     virtualenv_command: python{{ python_version }} -m venv
-    name: boussole
+    requirements: "{{ boussole_venv_dir }}/requirements.txt"
 
 - name: Create systemd service file
   template:
@@ -35,6 +48,7 @@
   register: compiled_css_files
 
 - name: Run boussole manually if no compiled CSS exists yet
+  become_user: "{{ app_username }}"
   command:
     chdir: "{{ app_dir }}"
     cmd: "{{ boussole_venv_dir }}/bin/boussole compile --backend=yaml --config=boussole.yaml"