Make bindists still appear to be broken

Another settings file fallout. Trying to install a recent bindist fails.

[matt@nixos:~]$ ghc-head-from 
Fetching artefact from ghc/master
builder for '/nix/store/blcipng1ya3qhfw6862qmg0dnkfr30fm-ghc-8.9.0.20190529.drv' failed with exit code 2; last 10 log lines:
  echo 'executablename="$exedir/ghc"' >> "/nix/store/pqlmzdxsw3mjjp20lv0mvpifaskh74am-ghc-8.9.0.20190529/bin/ghc-8.9.0.20190529"
  cat ghc/ghc.wrapper                         >> "/nix/store/pqlmzdxsw3mjjp20lv0mvpifaskh74am-ghc-8.9.0.20190529/bin/ghc-8.9.0.20190529"
  chmod +x                                         "/nix/store/pqlmzdxsw3mjjp20lv0mvpifaskh74am-ghc-8.9.0.20190529/bin/ghc-8.9.0.20190529"
  "rm" -f "/nix/store/pqlmzdxsw3mjjp20lv0mvpifaskh74am-ghc-8.9.0.20190529/bin/ghc"  
  ln -s ghc-8.9.0.20190529 "/nix/store/pqlmzdxsw3mjjp20lv0mvpifaskh74am-ghc-8.9.0.20190529/bin/ghc"
  /nix/store/fxvgwfb8f450aqq2xdbzy6jxvymcwvn3-coreutils-8.31/bin/install -c -m 755 -d "/nix/store/pqlmzdxsw3mjjp20lv0mvpifaskh74am-ghc-8.9.0.20190529/share/man"
  /nix/store/fxvgwfb8f450aqq2xdbzy6jxvymcwvn3-coreutils-8.31/bin/install -c -m 755 -d "/nix/store/pqlmzdxsw3mjjp20lv0mvpifaskh74am-ghc-8.9.0.20190529/share/man/man1"
  /nix/store/fxvgwfb8f450aqq2xdbzy6jxvymcwvn3-coreutils-8.31/bin/install -c -m 644  docs/users_guide/build-man/ghc.1 "/nix/store/pqlmzdxsw3mjjp20lv0mvpifaskh74am-ghc-8.9.0.20190529/share/man/man1"
  make[1]: *** No rule to make target 'settings', needed by 'install_libs'.  Stop.
  make: *** [Makefile:51: install] Error 2
[1 built (1 failed), 2 copied (18.1 MiB), 195.2 MiB DL]
error: build of '/nix/store/blcipng1ya3qhfw6862qmg0dnkfr30fm-ghc-8.9.0.20190529.drv' failed

It would be useful if anyone else could reproduce this with one of the artefacts.