I tried a local mock-build of atuin using this update (plus everything else currently in epel-testing for EPEL9).

  = note: lto-wrapper: warning: using serial compilation of 2 LTRANS jobs
          /usr/bin/ld: /builddir/build/BUILD/atuin-18.3.0/target/rpm/deps/libsqlx_sqlite-4491373bfab52eb5.rlib(sqlx_sqlite-4491373bfab52eb5.sqlx_sqlite.e706681aff040edf-cgu.0.rcgu.o): in function `sqlx_sqlit
e::connection::serialize::serialize':
          /usr/share/cargo/registry/sqlx-sqlite-0.8.6/src/connection/serialize.rs:81: undefined reference to `sqlite3_serialize'
          /usr/bin/ld: /builddir/build/BUILD/atuin-18.3.0/target/rpm/deps/libsqlx_sqlite-4491373bfab52eb5.rlib(sqlx_sqlite-4491373bfab52eb5.sqlx_sqlite.e706681aff040edf-cgu.0.rcgu.o): in function `sqlx_sqlit
e::connection::serialize::deserialize':
          /usr/share/cargo/registry/sqlx-sqlite-0.8.6/src/connection/serialize.rs:136: undefined reference to `sqlite3_deserialize'
          collect2: error: ld returned 1 exit status

  = note: some `extern` functions couldn't be found; some native libraries may need to be installed or have their path specified
  = note: use the `-l` flag to specify native libraries to link
  = note: use the `cargo:rustc-link-lib` directive to specify the native libraries to link with Cargo (see https://doc.rust-lang.org/cargo/reference/build-scripts.html#rustc-link-lib)

RHEL9 has sqlite-3.34.1, and according to https://sqlite.org/compile.html this interface was disabled by default prior to SQLite 3.36.0 (2021-06-18).

Given that connection/serialize.rs, which uses these interfaces, was added to sqlx-sqlite between 0.8.2 and 0.8.6, this should probably be considered a reason not to proceed with this update in EPEL9. We discussed this at some length in the Fedora Rust Matrix channel, but for now I’m going to go ahead and give this negative karma to document the situation.