Hello! I have a pixel 7 with GrapheneOS, and would like to install eSpeak as TTS engine. On fdroid there is no release available, and on github if I download the apk and try to install it, a “the app cannot be installed because your device is not compatible” error is thrown. Why this? And how can I install it?
Did you try building the APK yourself from the source?
Maybe it is reliant on google play services or uses libraries not available on GrapheneOS due to privacy issues with those libraries?