nixVersions: use writableTmpDirAsHomeHook in nix-fetchers-tests execution environment

(cherry picked from commit b21304fe4c491b871682fc292d9c31410cbb418a)

pkgs/tools/package-management/nix/modular/src/libfetchers-tests/package.nix

@@ -3,6 +3,7 @@
   buildPackages,
   stdenv,
   mkMesonExecutable,
+  writableTmpDirAsHomeHook,
 
   nix-fetchers,
   nix-fetchers-c,
@@ -47,18 +48,13 @@ mkMesonExecutable (finalAttrs: {
         runCommand "${finalAttrs.pname}-run"
           {
             meta.broken = !stdenv.hostPlatform.emulatorAvailable buildPackages;
+            buildInputs = [ writableTmpDirAsHomeHook ];
           }
-          (
-            lib.optionalString stdenv.hostPlatform.isWindows ''
-              export HOME="$PWD/home-dir"
-              mkdir -p "$HOME"
-            ''
-            + ''
-              export _NIX_TEST_UNIT_DATA=${resolvePath ./data}
-              ${stdenv.hostPlatform.emulator buildPackages} ${lib.getExe finalAttrs.finalPackage}
-              touch $out
-            ''
-          );
+          ''
+            export _NIX_TEST_UNIT_DATA=${resolvePath ./data}
+            ${stdenv.hostPlatform.emulator buildPackages} ${lib.getExe finalAttrs.finalPackage}
+            touch $out
+          '';
     };
   };