This is a direct link to download Google Camera for Nokia 7 Plus which has Night Sight mode working.
The version, developer of the app and other working and non-working features are unknown for this app.
To get more camera port apps, visit the Nokia 7 Plus Google Camera Download page.
Other Google Camera (GCam) APK Downloads:
- GCam Download (The huge list that contains working GCam ports for all available phones)