diff --git a/pkgs/development/interpreters/guile/2.0.nix b/pkgs/development/interpreters/guile/2.0.nix
index 73b813c6b003..ad542da64325 100644
--- a/pkgs/development/interpreters/guile/2.0.nix
+++ b/pkgs/development/interpreters/guile/2.0.nix
@@ -11,22 +11,15 @@
   libffi,
   libtool,
   libunistring,
-  libiconvReal,
   makeWrapper,
   pkg-config,
   pkgsBuildBuild,
   readline,
-}@args:
+}:
 
 let
   # Do either a coverage analysis build or a standard build.
   builder = if coverageAnalysis != null then coverageAnalysis else stdenv.mkDerivation;
-  # workaround for libiconv bug in macOS 14/15
-  libunistring =
-    if stdenv.hostPlatform.isDarwin then
-      args.libunistring.override { libiconv = libiconvReal; }
-    else
-      args.libunistring;
 in
 builder rec {
   pname = "guile";
diff --git a/pkgs/development/interpreters/guile/2.2.nix b/pkgs/development/interpreters/guile/2.2.nix
index 1e027408ef67..deb74210bdb7 100644
--- a/pkgs/development/interpreters/guile/2.2.nix
+++ b/pkgs/development/interpreters/guile/2.2.nix
@@ -11,22 +11,15 @@
   libffi,
   libtool,
   libunistring,
-  libiconvReal,
   makeWrapper,
   pkg-config,
   pkgsBuildBuild,
   readline,
-}@args:
+}:
 
 let
   # Do either a coverage analysis build or a standard build.
   builder = if coverageAnalysis != null then coverageAnalysis else stdenv.mkDerivation;
-  # workaround for libiconv bug in macOS 14/15
-  libunistring =
-    if stdenv.hostPlatform.isDarwin then
-      args.libunistring.override { libiconv = libiconvReal; }
-    else
-      args.libunistring;
 in
 builder rec {
   pname = "guile";
diff --git a/pkgs/development/interpreters/guile/3.0.nix b/pkgs/development/interpreters/guile/3.0.nix
index a1227d1774c9..473c05ea8383 100644
--- a/pkgs/development/interpreters/guile/3.0.nix
+++ b/pkgs/development/interpreters/guile/3.0.nix
@@ -11,24 +11,17 @@
   libffi,
   libtool,
   libunistring,
-  libiconvReal,
   libxcrypt,
   makeWrapper,
   pkg-config,
   pkgsBuildBuild,
   readline,
   writeScript,
-}@args:
+}:
 
 let
   # Do either a coverage analysis build or a standard build.
   builder = if coverageAnalysis != null then coverageAnalysis else stdenv.mkDerivation;
-  # workaround for libiconv bug in macOS 14/15
-  libunistring =
-    if stdenv.hostPlatform.isDarwin then
-      args.libunistring.override { libiconv = libiconvReal; }
-    else
-      args.libunistring;
 in
 builder rec {
   pname = "guile";
diff --git a/pkgs/development/libraries/libunistring/default.nix b/pkgs/development/libraries/libunistring/default.nix
index 3e7ee28dde4c..5d2eb67c3a08 100644
--- a/pkgs/development/libraries/libunistring/default.nix
+++ b/pkgs/development/libraries/libunistring/default.nix
@@ -3,9 +3,17 @@
   lib,
   stdenv,
   libiconv,
+  libiconvReal,
   updateAutotoolsGnuConfigScriptsHook,
   darwin,
-}:
+}@args:
+
+let
+  # https://lists.gnu.org/archive/html/bug-gnulib/2024-05/msg00375.html
+  # macoOS libiconv 14 & 15 do not work with libunistring and a configure test
+  # added in 1.3 rejects even building with it so use gnu libiconv on darwin
+  libiconv = if stdenv.hostPlatform.isDarwin then libiconvReal else args.libiconv;
+in
 
 # Note: this package is used for bootstrapping fetchurl, and thus
 # cannot use fetchpatch! All mutable patches (generated by GitHub or
@@ -30,9 +38,6 @@ stdenv.mkDerivation (finalAttrs: {
 
   strictDeps = true;
   propagatedBuildInputs = lib.optional (!stdenv.hostPlatform.isLinux) libiconv;
-  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
-    darwin.apple_sdk.frameworks.CoreServices
-  ];
   nativeBuildInputs = [ updateAutotoolsGnuConfigScriptsHook ];
 
   configureFlags = [ "--with-libiconv-prefix=${libiconv}" ];
diff --git a/pkgs/stdenv/darwin/default.nix b/pkgs/stdenv/darwin/default.nix
index 6cc22dd8bb0d..dd5993b36695 100644
--- a/pkgs/stdenv/darwin/default.nix
+++ b/pkgs/stdenv/darwin/default.nix
@@ -1198,7 +1198,6 @@ assert bootstrapTools.passthru.isFromBootstrapFiles or false; # sanity check
               ld64.out
               libffi.out
               libtapi.out
-              libunistring.out
               libxml2.out
               ncurses.dev
               ncurses.man