feat: fix python installation

for systems where same python version (major.minor) is already installed
to avoid python-apt missing error messages because of overridden python
executable

README.md

@@ -66,6 +66,7 @@ The following sections are devided into:
 | `paperless_ngx_dependency_install_tmp_dir` | /tmp/ | Directory for temporary dependency installation files |
 | `paperless_ngx_dir_force_permission_exclude` | [] | Which directories should be skipped from permission check/setting. See [docs](docs/DIRECTORY_PERMISSION_CHECK.md). |
 | `paperless_ngx_dir_installation` | /opt/paperless-ngx | The directory where paperless-ngx static installation files are written to. |
+| `paperless_ngx_dir_python` | /opt/python/{{ paperless_ngx_python_version_short }} | The directory where python binaries are compiled to. |
 | `paperless_ngx_dir_runtime_data` | /var/lib/paperless-ngx | The directory where the runtime data will be stored. |
 | `paperless_ngx_dir_virtualenv` | "{{ paperless_ngx_dir_installation }}/.venv" | The directory for the needed python venv. |
 | `paperless_ngx_jbig2enc_enabled` | true | Whether to install and use jbig2enc for OCRmyPDF. |

defaults/main.yml

@@ -5,6 +5,7 @@ paperless_ngx_db_type: sqlite  # or postgresql
 ## Directories
 paperless_ngx_dir_force_permission_exclude: []
 paperless_ngx_dir_installation: /opt/paperless-ngx
+paperless_ngx_dir_python: /opt/python/{{ paperless_ngx_python_version_short }}
 paperless_ngx_dir_runtime_data: /var/lib/paperless-ngx
 paperless_ngx_dir_virtualenv: "{{ paperless_ngx_dir_installation }}/.venv"
 ## jbig2encode

tasks/base_dependencies/python.yml

@@ -77,7 +77,7 @@
       delay: 60
 
     - name: Run configure for python
-      ansible.builtin.command: ./configure --prefix=/usr --enable-optimizations --with-ensurepip=install
+      ansible.builtin.command: ./configure --prefix={{ paperless_ngx_dir_python }} --enable-optimizations --with-ensurepip=install
       args:
         chdir: "{{ _python_archive_dir.path }}"
       changed_when: true

tasks/paperless_ngx/venv.yml

@@ -7,15 +7,15 @@
   ansible.builtin.pip:
     name: virtualenv
     extra_args: --upgrade --user
-    executable: /usr/bin/pip{{ paperless_ngx_python_version_short }}
+    executable: "{{ paperless_ngx_dir_python}}/bin/pip{{ paperless_ngx_python_version_short }}"
 
 - name: Install latest pip
   become: true
   become_user: "{{ paperless_ngx_system_user }}"
   ansible.builtin.pip:
     name: pip
     virtualenv: "{{ paperless_ngx_dir_virtualenv }}"
-    virtualenv_python: /usr/bin/python{{ paperless_ngx_python_version_short }}
+    virtualenv_python: "{{ paperless_ngx_dir_python}}/bin/python{{ paperless_ngx_python_version_short }}"
     virtualenv_command: python{{ paperless_ngx_python_version_short }} -m virtualenv
     extra_args: --upgrade
 
@@ -25,7 +25,7 @@
   ansible.builtin.pip:
     requirements: "{{ paperless_ngx_dir_installation }}/requirements.txt"
     virtualenv: "{{ paperless_ngx_dir_virtualenv }}"
-    virtualenv_python: /usr/bin/python{{ paperless_ngx_python_version_short }}
+    virtualenv_python: "{{ paperless_ngx_dir_python}}/bin/python{{ paperless_ngx_python_version_short }}"
     extra_args: --upgrade
   register: _install_python_requirements
   until: 'not "ReadTimeoutError" in _install_python_requirements.msg | default("")'