When running - as suggested - `slaptest -f slapd.conf $TMPDIR` I get the
following result:
    [root@ldap:/tmp/tmp.De46ABIbFf]# slaptest -f /nix/store/lks3ihydj40ff6yqvz0k33ycrc9vbyry-slapd.conf $TMPDIR
    usage: slaptest [-v] [-d debuglevel] [-f configfile] [-F configdir] [-o <name>[=<value>]] [-n databasenumber] [-u] [-Q]
    [root@ldap:/tmp/tmp.De46ABIbFf]# echo $?
    1
Adding a `-F` option fixes the issue.
(cherry picked from commit b5a12b4b61fca35c7ca94de0338a7e16841888f4)
		
	
Moved to: ./contributing-to-this-manual.xml. Link: https://nixos.org/manual/nixos/unstable/#chap-contributing