GlorpSQLite works on Pharo 7!
Take a fresh Pharo 7 alpha image; as of yesterday's download that is 5f13ae8. Launch it and run the following snippet in a Playground:
Metacello new baseline: 'GlorpSQLite'; repository: 'github://PierceNg/glorp-sqlite3:pharo7dev'; load.
Run the Glorp tests in TestRunner. The result should be green, with all 891 tests passed and 12 tests skipped. The database file is sodbxtestu.db in your image directory. Tested on 32- and 64-bit Ubuntu 18.04.