fun looking install crash :)

[cartazio]

[ Info  ] downloading: https://downloads.haskell.org/ghcup/unofficial-bindists/ghc/9.6.7/ghc-9.6.7-aarch64-apple-darwin.tar.xz as file /Users/carter/.ghcup/cache/ghc-9.6.7-aarch64-apple-darwin.tar.xz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  192M  100  192M    0     0  75.9M      0  0:00:02  0:00:02 --:--:-- 75.9M
[ Info  ] verifying digest of: ghc-9.6.7-aarch64-apple-darwin.tar.xz
[ Info  ] Unpacking: ghc-9.6.7-aarch64-apple-darwin.tar.xz to /Users/carter/.ghcup/tmp/ghcup-ea389b6897c46f41
[ Info  ] Installing GHC (this may take a while)
[ ghc-configure ] checking whether ld64 requires -no_fixup_chains... ...
[ ghc-configure ] checking whether the linker requires -no_warn_dupli...
[ ghc-configure ] checking whether the linker requires -no_warn_dupli...
[ ghc-configure ] checking whether the linker requires -no_warn_dupli...
[ ghc-configure ] checking C++ standard library flavour... /Users/car...
[ ghc-configure ] configure: error: Failed to compile test program
[ Error ] [GHCup-00841] Process "sh" with arguments ["./configure",
[ ...   ]                              "--prefix=/Users/carter/.ghcup/ghc/9.6.7",
[ ...   ]                              "--disable-ld-override"] failed with exit code 1.
[ Error ] Also check the logs in /Users/carter/.ghcup/logs
"ghcup --metadata-fetching-mode=Strict --cache install ghc recommended" failed!

is this exploding because i have a not .ghcup folder or because i already have ghc installed via my artisanal approach?

[ulidtko]

[ ghc-configure ] configure: error: Failed to compile test program

This typically means that a basic hello.c-style program failed to compile @cartazio. In other words, if you somehow managed to break the OS's fundamental toolchain used to produce executables — you'd see this error from ./configure scripts.

I guess it'll help if you elaborate on the "artisanal approach" in some detail... Also seeing why exactly it failed (Also check the logs in /Users/carter/.ghcup/logs) very likely might help.

[hasufell]

Yes, it looks like your toolchain is broken.

This can happen on darwin updates or due to brew etc.

You need the Xcode command line tools.