Graphene OS successfully installed on Pixel 8a from Ubuntu, using cli instructions.
However, the instructions refer to an incorrect package.
"Signify" as installed by sudo apt install signify delivers an app related to email.
The correct app is signify-openbsd - all commands should be updated to reflect this.
Otherwise, pretty smooth. Many thanks!
(bonus points: tried webinstaller on a liveboot Ubuntu, trying Brave and ungoogled-Chromium (both non-Snap). Could not get past an error on the image download (something like "error: failed") - suspect it might have been a problem with insufficient memory, not sure. No problems with cli).