Merge: Python packages in venv + configurations

local.yml

 ---
 - hosts: localhost
+  vars:
+    target_user: pi
+    jupyter_service: true
+    ignore_python_version: false 
+
   pre_tasks:
+    - name: Check python version
+      fail:
+        msg: Python version is not supported. Set ignore_python_version to true to ignore this.
+      when: (not ignore_python_version) and not (ansible_python_version is version('3.7.0', '>=') and ansible_python_version is version('3.10.0', '<'))
+
     # - name: Upgrade packages
     #   become: true
     #   apt:

roles/jupyter-lab/files/jupyter.service

@@ -5,9 +5,9 @@ Description=Jupyter Lab
 Type=simple
 PIDFile=/run/jupyter.pid
 # Password: [empty string]
-ExecStart=/usr/bin/python3 -m jupyterlab --ip="0.0.0.0" --notebook-dir=/home/pi/notebooks --no-browser --NotebookApp.password='sha1:9a2d316959ac:843b251c27024afb46174ce40ce0ebebcf29217b'
-User=pi
-Group=pi
+ExecStart=/home/{{ target_user }}/.ml-venv/bin/jupyter-lab --ip="0.0.0.0" --notebook-dir=/home/{{ target_user }}/notebooks --no-browser --NotebookApp.password='sha1:9a2d316959ac:843b251c27024afb46174ce40ce0ebebcf29217b'
+User={{ target_user }}
+Group={{ target_user }}
 Restart=always
 RestartSec=10
 

roles/jupyter-lab/tasks/main.yml

@@ -3,10 +3,10 @@
 
 - name: Notebooks dir
   file:
-    path: /home/pi/notebooks
+    path: "/home/{{ target_user }}/notebooks"
     state: directory
-    owner: pi
-    group: pi
+    owner: "{{ target_user }}"
+    group: "{{ target_user }}"
 
 # This should be optimized so that only one check / install is needed
 # Still we should make sure that pip3 is actually installed before trying to use it
@@ -15,23 +15,25 @@
   apt:
     name:
       - python3-pip
+      - python3-venv
     state: present
     update_cache: true
 
 - name: Install jupyter-lab
-  become: true
   pip:
-    executable: pip3
+    virtualenv_command: /usr/bin/python3 -m venv
+    virtualenv: "/home/{{ target_user }}/.ml-venv"
     name: jupyterlab
     state: present
 
 - name: Install systemd service
   become: true
-  copy:
+  template:
     src: files/jupyter.service
     dest: /etc/systemd/system/jupyter.service
     mode: '0644'
-  
+  when: jupyter_service
+
 - name: Start Jupyter-Lab service
   become: true
   systemd:
@@ -39,3 +41,5 @@
     state: started
     enabled: true
     daemon_reload: true
+  when: jupyter_service
+

roles/misc-applications/tasks/main.yml

 ---
 # roles/misc-applications
+
+- name: Install useful cli applications
+  become: true
+  apt:
+    name:
+      - neovim
+      - tmux
+    state: present
+

roles/ml-python-packages/files/requirements.txt

+numpy==1.21.*
+matplotlib==3.4.*
+pandas==1.3.*
+Pillow==8.4.*
+scikit-learn==1.0.*
+

roles/ml-python-packages/tasks/main.yml

@@ -12,25 +12,23 @@
     state: present
     update_cache: true
 
-- name: Remove conflicting apt packages
-  become: true
-  apt:
-    name:
-      - python3-pil
-      - python3-numpy
-    state: absent
+- name: Copy requirements.txt to remote fs
+  copy:
+    src: files/requirements.txt
+    dest: /tmp/ml-requirements.txt
 
 - name: Install ml python packages
-  become: true
   pip:
-    executable: pip3
-    name:
-      - numpy
-      - sklearn
-      - matplotlib
-      - pandas
-      - Pillow
+    virtualenv_command: /usr/bin/python3 -m venv
+    requirements: /tmp/ml-requirements.txt
+    virtualenv: "/home/{{ target_user }}/.ml-venv"
+    # name:
+      # - numpy
+      # - sklearn
+      # - matplotlib
+      # - pandas
+      # - Pillow
       # - torch
       # - torchvision
       # - fastai
-    state: present
+    # state: present