9.0.1-rc1 link error

Summary

Linking ghc-stage1 fails, cannot find ghc_GHCziCoreziOptziMonad_zdfxMonadCoreM_closure

Steps to reproduce

git fetch origin --tags
git checkout tags/ghc-9.0.1-rc1
git submodule update --recursive
git log --oneline -n1
> b369c6e6d6 (HEAD, tag: ghc-9.0.1-rc1, origin/wip/keepAlive-ghc-9.0) gitlab-ci: Use gtar on FreeBSD
./boot
HAPPY=~/.cabal/happy19/happy ./configure
make

Lots of work, eventually ending with

===--- building phase 0
make --no-print-directory -f ghc.mk phase=0 phase_0_builds
make[1]: Nothing to be done for 'phase_0_builds'.
===--- building phase 1
make --no-print-directory -f ghc.mk phase=1 phase_1_builds
"/usr/bin/ghc" -o ghc/stage1/build/tmp/ghc-stage1 -hisuf hi -osuf  o -hcsuf hc -static  -H32m -O -Wall   -package-db libraries/bootstrapping.conf  -hide-all-packages -i -ighc/. -ighc/stage1/build -Ighc/stage1/build -ighc/stage1/build/ghc/autogen -Ighc/stage1/build/ghc/autogen     -optP-include -optPghc/stage1/build/ghc/autogen/cabal_macros.h -package-id array-0.5.4.0 -package-id base-4.14.1.0 -package-id bytestring-0.10.12.0 -package-id containers-0.6.2.1 -package-id directory-1.3.6.0 -package-id filepath-1.4.2.1 -package-id ghc-9.0.0.20201227 -package-id ghc-boot-9.0.0.20201227 -package-id process-1.6.9.0 -package-id transformers-0.5.6.2 -package-id unix-2.7.2.2 -Wall -Wnoncanonical-monad-instances -Wnoncanonical-monoid-instances -threaded -XHaskell2010 -XNoImplicitPrelude -XScopedTypeVariables -XBangPatterns  -Wcpp-undef -no-hs-main -threaded -no-user-package-db -rtsopts        -outputdir ghc/stage1/build    -static  -H32m -O -Wall   -package-db libraries/bootstrapping.conf  -hide-all-packages -i -ighc/. -ighc/stage1/build -Ighc/stage1/build -ighc/stage1/build/ghc/autogen -Ighc/stage1/build/ghc/autogen     -optP-include -optPghc/stage1/build/ghc/autogen/cabal_macros.h -package-id array-0.5.4.0 -package-id base-4.14.1.0 -package-id bytestring-0.10.12.0 -package-id containers-0.6.2.1 -package-id directory-1.3.6.0 -package-id filepath-1.4.2.1 -package-id ghc-9.0.0.20201227 -package-id ghc-boot-9.0.0.20201227 -package-id process-1.6.9.0 -package-id transformers-0.5.6.2 -package-id unix-2.7.2.2 -Wall -Wnoncanonical-monad-instances -Wnoncanonical-monoid-instances -threaded -XHaskell2010 -XNoImplicitPrelude -XScopedTypeVariables -XBangPatterns  -Wcpp-undef -no-hs-main -threaded -no-user-package-db -rtsopts        ghc/stage1/build/Main.o ghc/stage1/build/hschooks.o
Warning: -rtsopts and -with-rtsopts have no effect with -no-hs-main.
    Call hs_init_ghc() from your main() function to set these options.
/usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: /home/tsuraan/src/ghc-9/compiler/stage1/build/libHSghc-9.0.0.20201227.a(Plugins.o): in function `ghc_GHCziDriverziPlugins_keepRenamedSource_info':
(.text+0x245c): undefined reference to `ghc_GHCziCoreziOptziMonad_zdfxMonadCoreM_closure'
/usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: /home/tsuraan/src/ghc-9/compiler/stage1/build/libHSghc-9.0.0.20201227.a(Plugins.o): in function `ghc_GHCziDriverziPlugins_defaultPluginzux_info':
(.text+0x2494): undefined reference to `ghc_GHCziCoreziOptziMonad_zdfxMonadCoreM_closure'
collect2: error: ld returned 1 exit status
`x86_64-pc-linux-gnu-gcc' failed in phase `Linker'. (Exit code: 1)
make[1]: *** [ghc/ghc.mk:124: ghc/stage1/build/tmp/ghc-stage1] Error 1
make: *** [Makefile:126: all] Error 2

Expected behavior

Lots of work, ending with an exit code of 0, and maybe even a compiler in inplace/bin/ghc-stage2

Environment

• GHC version used:

currently system GHC is 8.10.3, but the same was also happening under 8.8.4

OS is Linux, amd64. gcc is 9.3.0.