Let's remove the hardwired PATH= setting from the redefgen.sh script
which is executed when autoreconfHook is enabled. This resolves the
following failure:
build flags: SHELL=/nix/store/i2k8pqqzrmaafz2lf1dly1w96n4xpf2w-bash-5.1-p16/bin/bash
Making all in include
make[1]: Entering directory '/build/dante-1.4.3/include'
make all-am
make[2]: Entering directory '/build/dante-1.4.3/include'
sh ../include/redefgen.sh ../include
../include/redefgen.sh: line 13: egrep: command not found
../include/redefgen.sh: line 13: egrep: command not found
../include/redefgen.sh: line 13: awk: command not found
6f1dbeb35f