Publish Vulpes Preview 15 sources for desktop, Android and Tundra

Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.

tundra/droidian/prepare-session-root.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: MPL-2.0
+"""Install the common product and generated session configuration in a staged root."""
+import argparse
+import os
+from pathlib import Path
+import shutil
+
+
+def prepare(root, product, uid):
+    if not (root.parent/(root.name+'-stage.json')).is_file():
+        raise ValueError('Expected a staged runtime reference')
+    target = root/'opt/vulpes'
+    for name in ('assets','host','services','adapters','overrides','gaia','tools',
+                 'tests','engines','trial','engine-lock.json','release.json'):
+        source, destination = product/name, target/name
+        if source.is_dir():
+            shutil.copytree(source,destination,dirs_exist_ok=True,symlinks=True,
+                            ignore=shutil.ignore_patterns('__pycache__'))
+        else:
+            shutil.copy2(source,destination)
+    (target/'logs').mkdir(exist_ok=True)
+    (root/'home/droidian').mkdir(exist_ok=True)
+    (root/'etc/passwd').write_text(f'root:x:0:0:root:/root:/bin/bash\ndroidian:x:{uid}:{uid}:Vulpes trial:/home/droidian:/bin/bash\n')
+    (root/'etc/group').write_text(f'root:x:0:\ndroidian:x:{uid}:\n')
+    for name in ('system','vendor'):
+        path=root/name
+        if not path.is_symlink() and not path.exists():path.symlink_to('android/'+name)
+    # D-Bus uses /usr/share/dbus-1/*.conf. Do not alias those files into /etc:
+    # the packaged defaults include the optional /etc override themselves.
+    (root/'etc/dbus-1').mkdir(exist_ok=True)
+
+
+def main():
+    parser=argparse.ArgumentParser(description=__doc__)
+    parser.add_argument('--root',type=Path,required=True)
+    parser.add_argument('--product',type=Path,required=True)
+    args=parser.parse_args()
+    if os.getuid()==0:parser.error('Prepare as the unprivileged trial user')
+    prepare(args.root.resolve(),args.product.resolve(),os.getuid())
+
+
+if __name__=='__main__':main()