The package cannot build with vala support as it disabled by default with the build option `-Dvapi=false` in the ebuild. Reproducible: Always Steps to Reproduce: 1. emerge accountsservice 2. 3. Actual Results: It has no vala support. Expected Results: There should a 'vala' useflag to enable vala support. This bug report was made to support and notify of the pull request that was made here: https://github.com/gentoo/gentoo/pull/40627 .