check-exact is built in-tree
Might be related to #19606 (closed)
% ls utils/check-exact
check-exact.cabal ExactPrint.hs ghc.mk Lookup.hs Main.hs Parsers.hs Preprocess.hs README run.sh Transform.hs Types.hs Utils.hs
% ./hadrian/build --jobs=16 --build-root=_build --flavour=quick _build/test/bin/check-exact
...
% ls utils/check-exact
check-exact.cabal ExactPrint.hs ghc.mk Lookup.hs Main.hi Main.o Parsers.hs Preprocess.hi Preprocess.o run.sh Transform.hs Types.hi Types.o Utils.hs
ExactPrint.hi ExactPrint.o Lookup.hi Lookup.o Main.hs Parsers.hi Parsers.o Preprocess.hs README Transform.hi Transform.o Types.hs Utils.hi Utils.o