added pip_runner that add site_packages to sys.path

source/META-INF/manifest.xml

@@ -1,6 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest:manifest xmlns:manifest="urn:oasis:names:tc:opendocument:xmlns:manifest:1.0" xmlns:loext="urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0" manifest:version="1.2">
+  <manifest:file-entry manifest:full-path="job.xcu" manifest:media-type="application/vnd.sun.star.configuration-data" />
   <manifest:file-entry manifest:full-path="ZAZPip.py" manifest:media-type="application/vnd.sun.star.uno-component;type=Python"/>
+  <manifest:file-entry manifest:full-path="pip_runner.py" manifest:media-type="application/vnd.sun.star.uno-component;type=Python" />
   <manifest:file-entry manifest:full-path="Office/Accelerators.xcu" manifest:media-type="application/vnd.sun.star.configuration-data"/>
   <manifest:file-entry manifest:full-path="Addons.xcu" manifest:media-type="application/vnd.sun.star.configuration-data"/>
 </manifest:manifest>

source/job.xcu

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE oor:component-data SYSTEM "../../../../component-update.dtd">
+<oor:component-data oor:name="Jobs" oor:package="org.openoffice.Office"
+  xmlns:oor="http://openoffice.org/2001/registry" xmlns:xs="http://www.w3.org/2001/XMLSchema"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+  <node oor:name="Jobs">
+    <node oor:name="PipRunnerJob" oor:op="fuse">
+      <prop oor:name="Service">
+        <value>net.elmau.zaz.pip.PipRunner</value>
+      </prop>
+    </node>
+  </node>
+  <node oor:name="Events">
+    <node oor:name="OnStartApp" oor:op="fuse">
+      <node oor:name="JobList">
+        <node oor:name="PipRunnerJob" oor:op="fuse" />
+      </node>
+    </node>
+  </node>
+</oor:component-data>

source/pip_runner.py

@@ -0,0 +1,60 @@
+# region Imports
+from __future__ import unicode_literals, annotations
+import os
+import sys
+from typing import TYPE_CHECKING, Tuple
+from pathlib import Path
+import uno
+import unohelper
+from com.sun.star.task import XJob
+
+if TYPE_CHECKING:
+    # just for design time
+    from com.sun.star.beans import NamedValue
+
+# endregion Imports
+
+# region Constants
+
+implementation_name = "net.elmau.zaz.pip.PipRunner"
+implementation_services = ("com.sun.star.task.Job",)
+
+# endregion Constants
+
+
+    
+# region XJob
+class PipRunner(unohelper.Base, XJob):
+    def __init__(self, ctx):
+        self._is_flatpak = bool(os.getenv("FLATPAK_ID", ""))
+        if self._is_flatpak:
+            site_packages = self.get_flatpak_site_packages_dir()
+            ss = str(site_packages)
+            if site_packages.exists and  ss not in sys.path:
+                sys.path.append(ss)
+    
+    def execute(self, *args: Tuple[NamedValue, ...]) -> None:
+        pass
+    
+    def get_flatpak_site_packages_dir(self) -> Path:
+        # should never be all users
+        sand_box = os.getenv("FLATPAK_SANDBOX_DIR", "") or str(
+            Path.home() / ".var/app/org.libreoffice.LibreOffice/sandbox"
+        )
+        major_minor = f"{sys.version_info.major}.{sys.version_info.minor}"
+        site_packages = Path(sand_box) / f"lib/python{major_minor}/site-packages"
+        site_packages.mkdir(parents=True, exist_ok=True)
+        return site_packages
+
+# endregion XJob
+
+# region Implementation
+
+g_TypeTable = {}
+# python loader looks for a static g_ImplementationHelper variable
+g_ImplementationHelper = unohelper.ImplementationHelper()
+
+# add the FormatFactory class to the implementation container,
+# which the loader uses to register/instantiate the component.
+g_ImplementationHelper.addImplementation(PipRunner, implementation_name, implementation_services)
+# endregion Implementation