Hmm, I still have the same issue with this. Fails at something wrong with LDFLAGS="" but works when using -Wl,-w.

that is weird, I can build it on darwin:

$ nix-build -A ruby
/nix/store/rvb7avdslzv8rc60cgj13pzkqyr0a8bx-ruby-2.6.6

did you use nixpkgs-review? could you please create a pastebin with the output?

I'm also still getting the same error with this PR.

The output is the same as https://hydra.nixos.org/build/128219205/nixlog/2 except for the patch being applied:

patching sources
applying patch /nix/store/sg8ilal3zr70fislb01yhbn9afpwgx6s-ignore-cc-tools-ld-warning.patch
patching file tool/darwin-cc
autoreconfPhase

Would you mind checking whether it works with the following patch?

diff -Naur ruby.old/tool/darwin-cc ruby.new/tool/darwin-cc
--- ruby.old/tool/darwin-cc
+++ ruby.new/tool/darwin-cc
@@ -2,5 +2,6 @@
 exec 2> >(exec grep -v \
   -e '^ld: warning: The [a-z0-9_][a-z0-9_]* architecture is deprecated for macOS' \
   -e '^ld: warning: text-based stub file /System/Library/Frameworks/' \
+  -e '^ld: warning: passed two min versions' \
   >&2)
 exec "$@"

if it doesn't work, I think we can apply #101330 (comment)

Would you mind checking whether it works with the following patch?

Same error unfortunately.

@marsam Does not work with the original PR or your change.

checking whether LDFLAGS is valid... no
configure: error: something wrong with LDFLAGS=""
builder for '/nix/store/9vzh08m75bvh4xyazdj6ch6b3qqnfhra-ruby-2.6.6.drv' failed with exit code 1
cannot build derivation '/nix/store/94lf9wij83nhz7xrz41m8hrnfkh4h10c-ruby-2.6.6.drv': 1 dependencies couldn't be built
error: build of '/nix/store/94lf9wij83nhz7xrz41m8hrnfkh4h10c-ruby-2.6.6.drv' failed

#101330 (comment) works for me.

I opted to use @r-burns solution with LDFLAGS="-Wl,-w", because AFAIK that warning is harmless, and ruby is the only one affected

Sounds good to me. I imagine we'll just revert this and #101602 once the underlying issue is fixed.