dev-ml/cairo2-0.6.1-r2 failed: Error: Library "dune.configurator" not found.

Installing dev-ml/cairo2, I got the following message. The issue disappears if dev-ml/dune-configurator is emerged.

>>> Failed to emerge dev-ml/cairo2-0.6.1-r2, Log file:
>>>  '/var/tmp/portage/dev-ml/cairo2-0.6.1-r2/temp/build.log'
>>> Jobs: 6 of 10 complete, 1 failed                Load avg: 4.89, 3.17, 2.97
 * Package:    dev-ml/cairo2-0.6.1-r2
 * Repository: ml-overlay
 * Maintainer: ml@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
>>> Unpacking cairo2-0.6.1.tbz to /var/tmp/portage/dev-ml/cairo2-0.6.1-r2/work
>>> Source unpacked in /var/tmp/portage/dev-ml/cairo2-0.6.1-r2/work
>>> Preparing source in /var/tmp/portage/dev-ml/cairo2-0.6.1-r2/work/cairo2-0.6.1 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/dev-ml/cairo2-0.6.1-r2/work/cairo2-0.6.1 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/dev-ml/cairo2-0.6.1-r2/work/cairo2-0.6.1 ...
File "config/dune", line 5, characters 12-29:
5 |  (libraries dune.configurator str))
                ^^^^^^^^^^^^^^^^^
Error: Library "dune.configurator" not found.
Hint: try:
  dune external-lib-deps --missing -p cairo2 -j 8 @install
Done: 36/54 (jobs: 1) * ERROR: dev-ml/cairo2-0.6.1-r2::ml-overlay failed (compile phase):
 *   (no error message)
 *
 * Call stack:
 *     ebuild.sh, line 125:  Called src_compile
 *   environment, line 669:  Called jbuilder_src_compile
 *   environment, line 490:  Called die
 * The specific snippet of code:
 *       dune build -p "${PN}" -j $(makeopts_jobs) @install || die
 *
 * If you need support, post the output of `emerge --info '=dev-ml/cairo2-0.6.1-r2::ml-overlay'`,
 * the complete build log and the output of `emerge -pqv '=dev-ml/cairo2-0.6.1-r2::ml-overlay'`.
 * The complete build log is located at '/var/tmp/portage/dev-ml/cairo2-0.6.1-r2/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-ml/cairo2-0.6.1-r2/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-ml/cairo2-0.6.1-r2/work/cairo2-0.6.1'
 * S: '/var/tmp/portage/dev-ml/cairo2-0.6.1-r2/work/cairo2-0.6.1'

aballier / ml-overlay

dev-ml/cairo2-0.6.1-r2 failed: Error: Library "dune.configurator" not found. #15