community/ghc: fails to build from source

Unexpected results from:
TEST="T16521 list_threads_and_misc_roots testwsdeque"

SUMMARY for test run started at Thu Nov 21 20:50:48 2024 
0:08:17.924994 spent to go through
    9673 total tests, which gave rise to
   53944 test cases, of which
   44298 were skipped
       0 had missing libraries

    9504 expected passes
     109 expected failures

       0 caused framework failures
       0 caused framework warnings
       0 unexpected passes
       3 unexpected failures
       0 unexpected stat failures
      30 fragile tests

Unexpected failures:
   /tmp/ghctest-iwqdryy_/test   spaces/testsuite/tests/rts/pause-resume/list_threads_and_misc_roots.run  list_threads_and_misc_roots [exit code non-0] (threaded1)
   /tmp/ghctest-iwqdryy_/test   spaces/testsuite/tests/driver/T16521/T16521.run                          T16521 [bad stdout] (normal)
   /tmp/ghctest-iwqdryy_/test   spaces/testsuite/tests/rts/testwsdeque.run                               testwsdeque [exit code non-0] (threaded1)

user error (tests failed)
Build failed.
>>> ERROR: ghc: check failed
>>> ERROR: ghc: rootbld failed
>>> ghc: Cleaning up build chroot