fix valgrind

riscv/valgrind/default.nix

@@ -5,8 +5,6 @@
   perl,
   gdb,
   cctools,
-  xnu,
-  bootstrap_cmds,
   autoreconfHook,
 }: let
   source = builtins.fromJSON (builtins.readFile ./source.json);
@@ -27,7 +25,7 @@ in
 
     # GDB is needed to provide a sane default for `--db-command'.
     # Perl is needed for `callgrind_{annotate,control}'.
-    buildInputs = [gdb perl] ++ lib.optionals (stdenv.isDarwin) [bootstrap_cmds xnu];
+    buildInputs = [gdb perl];
 
     # Perl is also a native build input.
     nativeBuildInputs = [autoreconfHook perl];
@@ -35,39 +33,9 @@ in
     enableParallelBuilding = true;
     separateDebugInfo = stdenv.isLinux;
 
-    preConfigure = lib.optionalString stdenv.isDarwin (
-      let
-        OSRELEASE = ''
-          $(awk -F '"' '/#define OSRELEASE/{ print $2 }' \
-          <${xnu}/Library/Frameworks/Kernel.framework/Headers/libkern/version.h)'';
-      in ''
-        echo "Don't derive our xnu version using uname -r."
-        substituteInPlace configure --replace "uname -r" "echo ${OSRELEASE}"
-
-        # Apple's GCC doesn't recognize `-arch' (as of version 4.2.1, build 5666).
-        echo "getting rid of the \`-arch' GCC option..."
-        find -name Makefile\* -exec \
-          sed -i {} -e's/DARWIN\(.*\)-arch [^ ]\+/DARWIN\1/g' \;
-
-        sed -i coregrind/link_tool_exe_darwin.in \
-            -e 's/^my \$archstr = .*/my $archstr = "x86_64";/g'
-
-        substituteInPlace coregrind/m_debuginfo/readmacho.c \
-           --replace /usr/bin/dsymutil ${stdenv.cc.bintools.bintools}/bin/dsymutil
-
-        echo "substitute hardcoded /usr/bin/ld with ${cctools}/bin/ld"
-        substituteInPlace coregrind/link_tool_exe_darwin.in \
-          --replace /usr/bin/ld ${cctools}/bin/ld
-      ''
-    );
-
     # To prevent rebuild on linux when moving darwin's postPatch fixes to preConfigure
     postPatch = "";
 
-    configureFlags =
-      lib.optional (stdenv.hostPlatform.system == "x86_64-linux" || stdenv.hostPlatform.system == "x86_64-darwin") "--enable-only64bit"
-      ++ lib.optional stdenv.hostPlatform.isDarwin "--with-xcodedir=${xnu}/include";
-
     doCheck = true;
 
     postInstall = ''