It worked!
Thank you!
ferdiConfigDB = pkgs.stdenv.mkDerivation {
name = "ferdiConfigDB";
buildInputs = with pkgs; [ sqlite ];
dontUnpack = true;
dontInstall = true;
buildPhase = ''
sqlite3 $out ".read ${initDBTablesSqlFile}"
sqlite3 $out ".read ${toFile "allInsertionQueries.sql" allInsertionQueries}"
'';
};
...
home.file.${servicesDB}.source = ferdiConfigDB;