Bad error mode when ghc bootstrap fails during compile

[hasufell]

[root@GHC ~]# ghcup --keep=errors compile ghc --patch https://gitlab.haskell.org/maerwald/ghc/-/commit/20befebf3e57f0ad1f0d45cec60b230717d0c95b.patch -b 9.4.8 -g ghc-9.6 -o 9.6.6 -- --with-gmp-includes=/usr/local/include --with-gmp-libraries=/usr/local/lib --with-iconv-includes=/usr/local/include --with-iconv-libraries=/usr/local/lib
[ Info  ] Fetching git repo https://gitlab.haskell.org/ghc/ghc.git at ref ghc-9.6 (this may take a while)
[ Info  ] downloading: https://gitlab.haskell.org/maerwald/ghc/-/commit/20befebf3e57f0ad1f0d45cec60b230717d0c95b.patch as file /root/.ghcup/tmp/ghcup-7da63ea1c6e88aee/20befebf3e57f0ad1f0d45cec60b230717d0c95b.patch
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  4075    0  4075    0     0  11019      0 --:--:-- --:--:-- --:--:-- 11013
[ Info  ] Applying patch /root/.ghcup/tmp/ghcup-7da63ea1c6e88aee/20befebf3e57f0ad1f0d45cec60b230717d0c95b.patch
[ ghc-bootstrap ] ghcup: python3: executeFile: does not exist (No such file or directory)





[ Info  ] Examining git ref ghc-9.6
[ ...   ]   GHC version (from Makefile): Nothing
[ ...   ]   commit hash: 3a18c0fa2edcd61b0c3b470661791b09501c4c2b
[ Info  ] Detected Hadrian
[ Info  ] configuring build
[ ghc-conf ] sh: cannot open ./configure: No such file or directory





[ Error ] [GHCup-00841] Process "sh" with arguments ["./configure",
[ ...   ]                              "GHC=/root/.ghcup/bin/ghc-9.4.8",
[ ...   ]                              "--prefix=/root/.ghcup/ghc/9.6.6",
[ ...   ]                              "--with-gmp-includes=/usr/local/include",
[ ...   ]                              "--with-gmp-libraries=/usr/local/lib",
[ ...   ]                              "--with-iconv-includes=/usr/local/include",
[ ...   ]                              "--with-iconv-libraries=/usr/local/lib"] failed with exit code 127.

It should fail right when we try to execute python3.