diff --git a/pkgs/tools/package-management/nix/default.nix b/pkgs/tools/package-management/nix/default.nix
index b88fbeb4cba969..09ccda98d30952 100644
--- a/pkgs/tools/package-management/nix/default.nix
+++ b/pkgs/tools/package-management/nix/default.nix
@@ -13,90 +13,29 @@
 , confDir ? "/etc"
 }:
 let
-  boehmgc-nix = boehmgc.override {
-    enableLargeConfig = true;
-  }.overrideAttrs (drv: {
-    patches = (drv.patches or [ ]) ++ [
-      # Part of the GC solution in https://github.com/NixOS/nix/pull/4944
-      ./patches/boehmgc-coroutine-sp-fallback.patch
-    ];
-  });
-
-  # old nix fails to build with newer aws-sdk-cpp and the patch doesn't apply
-  aws-sdk-cpp-old-nix = (aws-sdk-cpp.override {
-    apis = [ "s3" "transfer" ];
-    customMemoryManagement = false;
-  }).overrideAttrs (args: rec {
-    # intentionally overriding postPatch
-    version = "1.9.294";
-
-    src = fetchFromGitHub {
-      owner = "aws";
-      repo = "aws-sdk-cpp";
-      rev = version;
-      hash = "sha256-Z1eRKW+8nVD53GkNyYlZjCcT74MqFqqRMeMc33eIQ9g=";
-    };
-    postPatch = ''
-      # Avoid blanket -Werror to evade build failures on less
-      # tested compilers.
-      substituteInPlace cmake/compiler_settings.cmake \
-        --replace '"-Werror"' ' '
-
-      # Missing includes for GCC11
-      sed '5i#include <thread>' -i \
-        aws-cpp-sdk-cloudfront-integration-tests/CloudfrontOperationTest.cpp \
-        aws-cpp-sdk-cognitoidentity-integration-tests/IdentityPoolOperationTest.cpp \
-        aws-cpp-sdk-dynamodb-integration-tests/TableOperationTest.cpp \
-        aws-cpp-sdk-elasticfilesystem-integration-tests/ElasticFileSystemTest.cpp \
-        aws-cpp-sdk-lambda-integration-tests/FunctionTest.cpp \
-        aws-cpp-sdk-mediastore-data-integration-tests/MediaStoreDataTest.cpp \
-        aws-cpp-sdk-queues/source/sqs/SQSQueue.cpp \
-        aws-cpp-sdk-redshift-integration-tests/RedshiftClientTest.cpp \
-        aws-cpp-sdk-s3-crt-integration-tests/BucketAndObjectOperationTest.cpp \
-        aws-cpp-sdk-s3-integration-tests/BucketAndObjectOperationTest.cpp \
-        aws-cpp-sdk-s3control-integration-tests/S3ControlTest.cpp \
-        aws-cpp-sdk-sqs-integration-tests/QueueOperationTest.cpp \
-        aws-cpp-sdk-transfer-tests/TransferTests.cpp
-      # Flaky on Hydra
-      rm aws-cpp-sdk-core-tests/aws/auth/AWSCredentialsProviderTest.cpp
-      # Includes aws-c-auth private headers, so only works with submodule build
-      rm aws-cpp-sdk-core-tests/aws/auth/AWSAuthSignerTest.cpp
-      # TestRandomURLMultiThreaded fails
-      rm aws-cpp-sdk-core-tests/http/HttpClientTest.cpp
-    '' + lib.optionalString aws-sdk-cpp.stdenv.hostPlatform.isi686 ''
-      # EPSILON is exceeded
-      rm aws-cpp-sdk-core-tests/aws/client/AdaptiveRetryStrategyTest.cpp
-    '';
-
-    patches = (args.patches or [ ]) ++ [ ./patches/aws-sdk-cpp-TransferManager-ContentEncoding.patch ];
-
-    # only a stripped down version is build which takes a lot less resources to build
-    requiredSystemFeatures = [ ];
-  });
-
-  aws-sdk-cpp-nix = (aws-sdk-cpp.override {
-    apis = [ "s3" "transfer" ];
-    customMemoryManagement = false;
-  }).overrideAttrs {
-    # only a stripped down version is build which takes a lot less resources to build
-    requiredSystemFeatures = [ ];
-  };
-
   common = args:
     callPackage
       (import ./common.nix ({ inherit lib fetchFromGitHub; } // args))
       {
         inherit Security storeDir stateDir confDir;
-        boehmgc = boehmgc-nix;
-        aws-sdk-cpp = aws-sdk-cpp-nix;
-      };
 
-  # https://github.com/NixOS/nix/pull/7585
-  patch-monitorfdhup = fetchpatch2 {
-    name = "nix-7585-monitor-fd-hup.patch";
-    url = "https://github.com/NixOS/nix/commit/1df3d62c769dc68c279e89f68fdd3723ed3bcb5a.patch";
-    hash = "sha256-f+F0fUO+bqyPXjt+IXJtISVr589hdc3y+Cdrxznb+Nk=";
-  };
+        boehmgc = (boehmgc.override {
+          enableLargeConfig = true;
+        }).overrideAttrs (drv: {
+          patches = (drv.patches or [ ]) ++ [
+            # Part of the GC solution in https://github.com/NixOS/nix/pull/4944
+            ./patches/boehmgc-coroutine-sp-fallback.patch
+          ];
+        });
+
+        aws-sdk-cpp =  (aws-sdk-cpp.override {
+          apis = [ "s3" "transfer" ];
+          customMemoryManagement = false;
+        }).overrideAttrs {
+          # only a stripped down version is build which takes a lot less resources to build
+          requiredSystemFeatures = [ ];
+        };
+      };
 
   # Intentionally does not support overrideAttrs etc
   # Use only for tests that are about the package relation to `pkgs` and/or NixOS.
@@ -136,13 +75,69 @@ in lib.makeExtensible (self: ({
     version = "2.3.18";
     hash = "sha256-jBz2Ub65eFYG+aWgSI3AJYvLSghio77fWQiIW1svA9U=";
     patches = [
-      patch-monitorfdhup
+      # https://github.com/NixOS/nix/pull/7585
+      (fetchpatch2 {
+        name = "nix-7585-monitor-fd-hup.patch";
+        url = "https://github.com/NixOS/nix/commit/1df3d62c769dc68c279e89f68fdd3723ed3bcb5a.patch";
+        hash = "sha256-f+F0fUO+bqyPXjt+IXJtISVr589hdc3y+Cdrxznb+Nk=";
+      })
     ];
     self_attribute_name = "nix_2_3";
     maintainers = with lib.maintainers; [ flokli ];
   }).override {
     boehmgc = boehmgc.override { enableLargeConfig = true; };
-    aws-sdk-cpp = aws-sdk-cpp-old-nix;
+
+    # old nix fails to build with newer aws-sdk-cpp and the patch doesn't apply
+    aws-sdk-cpp = (aws-sdk-cpp.override {
+      apis = [ "s3" "transfer" ];
+      customMemoryManagement = false;
+    }).overrideAttrs (args: rec {
+      # intentionally overriding postPatch
+      version = "1.9.294";
+
+      src = fetchFromGitHub {
+        owner = "aws";
+        repo = "aws-sdk-cpp";
+        rev = version;
+        hash = "sha256-Z1eRKW+8nVD53GkNyYlZjCcT74MqFqqRMeMc33eIQ9g=";
+      };
+      postPatch = ''
+        # Avoid blanket -Werror to evade build failures on less
+        # tested compilers.
+        substituteInPlace cmake/compiler_settings.cmake \
+          --replace '"-Werror"' ' '
+
+        # Missing includes for GCC11
+        sed '5i#include <thread>' -i \
+          aws-cpp-sdk-cloudfront-integration-tests/CloudfrontOperationTest.cpp \
+          aws-cpp-sdk-cognitoidentity-integration-tests/IdentityPoolOperationTest.cpp \
+          aws-cpp-sdk-dynamodb-integration-tests/TableOperationTest.cpp \
+          aws-cpp-sdk-elasticfilesystem-integration-tests/ElasticFileSystemTest.cpp \
+          aws-cpp-sdk-lambda-integration-tests/FunctionTest.cpp \
+          aws-cpp-sdk-mediastore-data-integration-tests/MediaStoreDataTest.cpp \
+          aws-cpp-sdk-queues/source/sqs/SQSQueue.cpp \
+          aws-cpp-sdk-redshift-integration-tests/RedshiftClientTest.cpp \
+          aws-cpp-sdk-s3-crt-integration-tests/BucketAndObjectOperationTest.cpp \
+          aws-cpp-sdk-s3-integration-tests/BucketAndObjectOperationTest.cpp \
+          aws-cpp-sdk-s3control-integration-tests/S3ControlTest.cpp \
+          aws-cpp-sdk-sqs-integration-tests/QueueOperationTest.cpp \
+          aws-cpp-sdk-transfer-tests/TransferTests.cpp
+        # Flaky on Hydra
+        rm aws-cpp-sdk-core-tests/aws/auth/AWSCredentialsProviderTest.cpp
+        # Includes aws-c-auth private headers, so only works with submodule build
+        rm aws-cpp-sdk-core-tests/aws/auth/AWSAuthSignerTest.cpp
+        # TestRandomURLMultiThreaded fails
+        rm aws-cpp-sdk-core-tests/http/HttpClientTest.cpp
+      '' + lib.optionalString aws-sdk-cpp.stdenv.hostPlatform.isi686 ''
+        # EPSILON is exceeded
+        rm aws-cpp-sdk-core-tests/aws/client/AdaptiveRetryStrategyTest.cpp
+      '';
+
+      patches = (args.patches or [ ]) ++ [ ./patches/aws-sdk-cpp-TransferManager-ContentEncoding.patch ];
+
+      # only a stripped down version is build which takes a lot less resources to build
+      requiredSystemFeatures = [ ];
+    });
   }).overrideAttrs {
     # https://github.com/NixOS/nix/issues/10222
     # spurious test/add.sh failures