role nginx_uwsgi: fix build dependencies

role uv: register uv python paths

docs/roles/nginx_uwsgi.md

@@ -17,7 +17,7 @@ The Python application is assumed to be installed already in the location `uwsgi
 
 ## Description
 
-The playbook can be run in two modes:
+The role can be executed in two modes:
 
 1. (Default) Install `uwsgi` and its Python3 plugin via the system package manager (`apt`).
 2. Use a pre-existing `uwsgi` installation in a `venv`. To use this mode, set the `uwsgi_venv` variable to the location of venv already containing `uwsgi`.

docs/roles/uv.md

@@ -16,6 +16,14 @@ Aditionally, a script `/usr/local/bin/uv_pip` is installed, which is essentially
 
 The role also supports creating venvs and installing desired Python versions (see below).
 
+The role will set a fact `uv_python_paths`, which contains a dict containing the location of the python interpreter for each requested versions. For example:
+
+```
+uv_python_paths: {
+    '3.11': '/root/.local/share/uv/cpython-xxxxx/bin/python3'
+}
+```
+
 ## Variables
 
 - `uv_vens`: List of dicts describing virtual environments to be initialized with `uv`. Each item in the dict is expected to contain a `python` and `path` attribute: the former determines which Python verison to use for the venv, while the latter is the location of the venv. Example: `{ path: '/tmp/foo', python: '3.11' }`. __Note__: Python versions are installed if necessary.

playbooks/flask_app.yml

@@ -60,7 +60,7 @@
           set_fact:
             uwsgi_proxy_config: "{{ _uwsgi_proxy_config }}"
 
-    - name: Set auth info variable if present
+    - name: Set auth info variable if auth basic is set
       when: flask_app_auth == 'basic'
       set_fact:
         _flask_app_auth_info:
@@ -69,11 +69,6 @@
             password: "{{ flask_app_password | default('') }}"
       no_log: true
 
-    - name: Set auth info variable if not present
-      when: not flask_app_auth == 'basic'
-      set_fact:
-        _flask_app_auth_info: "{{ omit }}"
-
     - name: Clone repo
       tags: molecule-idempotence-notest
       git:

playbooks/roles/nginx_uwsgi/meta/main.yml

@@ -0,0 +1,9 @@
+galaxy_info:
+  author: Dawa Ometto (Utrecht University)
+  description: Setup uwsgi application service using nginx provided by SRC-Nginx component.
+  license: GPLv3
+  min_ansible_version: '2.9'
+  platforms:
+    - name: Ubuntu
+      versions:
+        - all

playbooks/roles/nginx_uwsgi/molecule/venv/prepare.yml

@@ -12,14 +12,6 @@
           - build-essential
           - python3-dev
 
-    - name: Create venv
-      ansible.builtin.pip:
-        name:
-          - wheel
-          - uwsgi
-        state: present
-        virtualenv: /var/www/uwsgi/example/venv
-
     - name: Run external components
       ansible.builtin.include_tasks: ../_run_external_components.yml
       loop:

playbooks/roles/nginx_uwsgi/tasks/main.yml

@@ -25,11 +25,22 @@
 
 - name: Install uwsgi
   when: uwsgi_venv
-  pip:
-    name:
-      - uwsgi
-    state: present # only install if not yet present, otherwise keep existing
-    virtualenv: "{{ uwsgi_venv }}"
+  block:
+
+    - name: Ensure build requirements for uwsgi present
+      when: ansible_os_family == 'Debian'
+      package:
+        name:
+            - build-essential
+            - python3-dev
+
+    - name: Install uwsgi via pip
+      pip:
+        name:
+          - wheel
+          - uwsgi
+        state: present # only install if not yet present, otherwise keep existing
+        virtualenv: "{{ uwsgi_venv }}"
 
 - name: Configure uwsgi reverse proxy in nginx
   include_role:

playbooks/roles/uv/tasks/main.yml

@@ -6,7 +6,7 @@
     pipx_install_systemwide_packages:
       - uv
     pipx_install_location: "{{ uu_pipx_bin }}"
-    pipx_install_systemwide_profile: '' # deactivate adding uv path to /etc/profile
+    pipx_install_systemwide_profile: '' # deactivate adding uv path to /etc/profile. We're creating aliases instead.
 
 - name: Install uv alias
   file:
@@ -27,11 +27,26 @@
       #!/bin/bash
       /usr/local/bin/uv pip "$@"
 
+- name: Define python versions to be installed
+  set_fact:
+    uv_python_versions_install: "{{ (uv_python_versions + (uv_venvs | map(attribute='python') | list)) | unique }}"
+
 - name: Install desired python version
   command: "uv python install {{ item }}"
   register: _install_desired_python
   changed_when: '"Found existing installation" not in _install_desired_python.stderr'
-  with_items: "{{ (uv_python_versions + (uv_venvs | map(attribute='python') | list)) | unique }}"
+  with_items: "{{ uv_python_versions_install }}"
+
+- name: Set uv python install path facts step 1
+  shell: "uv python find {{ item }}"
+  changed_when: false
+  register: "_uv_python_finds"
+  with_items: "{{ uv_python_versions_install }}"
+
+- name: Set uv python install path facts step 2
+  set_fact:
+    uv_python_paths: "{{ (uv_python_paths | default({})) | combine({ item.item: item.stdout }) }}"
+  with_items: "{{ _uv_python_finds.results }}"
 
 - name: Create venvs
   command: