diff --git a/pkgs/development/compilers/ghc/9.4.2.nix b/pkgs/development/compilers/ghc/9.4.2.nix
index afe78cbb87c06..5094c3c7c0540 100644
--- a/pkgs/development/compilers/ghc/9.4.2.nix
+++ b/pkgs/development/compilers/ghc/9.4.2.nix
@@ -288,6 +288,10 @@ stdenv.mkDerivation (rec {
       'MinBootGhcVersion="8.10"'
   '';
 
+  # Silence unused function warning due to `popcount16` being defined on all platforms but used only
+  # on x86_64. This results in an error due to `-Werror`.
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.cc.isClang && !targetPlatform.isx86_64) "-Wno-unused-function";
+
   # TODO(@Ericson2314): Always pass "--target" and always prefix.
   configurePlatforms = [ "build" "host" ]
     ++ lib.optional (targetPlatform != hostPlatform) "target";
diff --git a/pkgs/development/compilers/ghc/9.4.3.nix b/pkgs/development/compilers/ghc/9.4.3.nix
index a2ae0cf400c7a..6aba2a7b0940d 100644
--- a/pkgs/development/compilers/ghc/9.4.3.nix
+++ b/pkgs/development/compilers/ghc/9.4.3.nix
@@ -288,6 +288,10 @@ stdenv.mkDerivation (rec {
       'MinBootGhcVersion="8.10"'
   '';
 
+  # Silence unused function warning due to `popcount16` being defined on all platforms but used only
+  # on x86_64. This results in an error due to `-Werror`.
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.cc.isClang && !targetPlatform.isx86_64) "-Wno-unused-function";
+
   # TODO(@Ericson2314): Always pass "--target" and always prefix.
   configurePlatforms = [ "build" "host" ]
     ++ lib.optional (targetPlatform != hostPlatform) "target";
diff --git a/pkgs/development/compilers/ghc/9.4.4.nix b/pkgs/development/compilers/ghc/9.4.4.nix
index 13d01a3426377..d06bab66bde26 100644
--- a/pkgs/development/compilers/ghc/9.4.4.nix
+++ b/pkgs/development/compilers/ghc/9.4.4.nix
@@ -288,6 +288,10 @@ stdenv.mkDerivation (rec {
       'MinBootGhcVersion="8.10"'
   '';
 
+  # Silence unused function warning due to `popcount16` being defined on all platforms but used only
+  # on x86_64. This results in an error due to `-Werror`.
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.cc.isClang && !targetPlatform.isx86_64) "-Wno-unused-function";
+
   # TODO(@Ericson2314): Always pass "--target" and always prefix.
   configurePlatforms = [ "build" "host" ]
     ++ lib.optional (targetPlatform != hostPlatform) "target";
diff --git a/pkgs/development/compilers/ghc/9.4.5.nix b/pkgs/development/compilers/ghc/9.4.5.nix
index da333a6138003..07809232b0b97 100644
--- a/pkgs/development/compilers/ghc/9.4.5.nix
+++ b/pkgs/development/compilers/ghc/9.4.5.nix
@@ -288,6 +288,10 @@ stdenv.mkDerivation (rec {
       'MinBootGhcVersion="8.10"'
   '';
 
+  # Silence unused function warning due to `popcount16` being defined on all platforms but used only
+  # on x86_64. This results in an error due to `-Werror`.
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.cc.isClang && !targetPlatform.isx86_64) "-Wno-unused-function";
+
   # TODO(@Ericson2314): Always pass "--target" and always prefix.
   configurePlatforms = [ "build" "host" ]
     ++ lib.optional (targetPlatform != hostPlatform) "target";
diff --git a/pkgs/development/compilers/ghc/9.4.6.nix b/pkgs/development/compilers/ghc/9.4.6.nix
index 95cb31a411ff1..5b264706c234a 100644
--- a/pkgs/development/compilers/ghc/9.4.6.nix
+++ b/pkgs/development/compilers/ghc/9.4.6.nix
@@ -284,6 +284,10 @@ stdenv.mkDerivation (rec {
       'MinBootGhcVersion="8.10"'
   '';
 
+  # Silence unused function warning due to `popcount16` being defined on all platforms but used only
+  # on x86_64. This results in an error due to `-Werror`.
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.cc.isClang && !targetPlatform.isx86_64) "-Wno-unused-function";
+
   # TODO(@Ericson2314): Always pass "--target" and always prefix.
   configurePlatforms = [ "build" "host" ]
     ++ lib.optional (targetPlatform != hostPlatform) "target";