AD: how to install unsigned apks?

General
#1

in android layer how do I install unsigned apks?

$ adb install some.apk 
Performing Streamed Install
adb: failed to install some.apk: Failure [INSTALL_PARSE_FAILED_NO_CERTIFICATES: Failed to collect certificates from /data/app/vmdl1083305613.tmp/base.apk using APK Signature Scheme v3: SHA-256 digest of contents did not verify]

On android devices it is fixed with Magisk+LSPosed patches

#2

You might want to read this Aliendalvik: root access?

Not a complete solution, but if you have knowledge about Magisk, root, etc. this might help. Putting the APK in a certain path in unpacked image might also work without rooting.