only set bootstrapped=YES if the version we're building with is
exactly the *same* as the version being built, rather than a later
version.
ifneq "$(findstring $(stage), 2 3)" ""
bootstrapped = YES
else
-bootstrapped = $(shell if (test $(GhcCanonVersion) -ge $(ProjectVersionInt) -a $(GhcPatchLevel) -ge $(ProjectPatchLevel)); then echo YES; else echo NO; fi)
+bootstrapped = $(shell if (test $(GhcCanonVersion) -eq $(ProjectVersionInt) -a $(GhcPatchLevel) -eq $(ProjectPatchLevel)); then echo YES; else echo NO; fi)
endif
endif