Hi,

The package builds fine, but its autopkgtest fails with testthat 3.3.2,
which removed the long-deprecated is_true() expectation. This blocks
migration to testing:

  > test_check('ballgown')
  Saving _problems/test-annotation-42.R
  [ FAIL 1 | WARN 32 | SKIP 0 | PASS 127 ]

  ══ Failed tests ══
  ── Error ('test-annotation.R:41:5'): splitting attribute fields works ──
  Error in `is_true()`: could not find function "is_true"
  Backtrace:
      ▆
   1. └─testthat::expect_that(...) at test-annotation.R:41:5

Ubuntu sees the same failure.

Upstream fixed this by replacing both is_true() calls in
tests/testthat/test-annotation.R with equals(TRUE):

https://github.com/alyssafrazee/ballgown/commit/0ccd85f97c942de7e93a3f9b341fe688a6b4bb88

The attached patch is that commit as a quilt patch, unchanged. It only
touches the test file. We are applying it in Ubuntu as
2.43.0+dfsg-2ubuntu1.

Cheers,
Sebastien