I've compiled sqlite3 and built a package. It's only ~400k in size, so it will install directly to /. It includes the library as well as the binary (sqlite3). Some test code:
Code:
root@ereader:/var/tmp$ sqlite3 test.db
SQLite version 3.5.9
Enter ".help" for instructions
sqlite> CREATE TABLE test (
...> ID Int Primary Key,
...> Name Varchar );
sqlite> .schema
CREATE TABLE test (
ID Int Primary Key,
Name Varchar );
sqlite> INSERT INTO test VALUES(1, "abc");
sqlite> SELECT * FROM test;
1|abc
sqlite> .exit
root@ereader:/var/tmp$
EDIT: The Ruby library for SQLite3 is out now too (that's what I needed sqlite3 for

). See
this post.