diff --git a/pkgs/development/libraries/libedit/default.nix b/pkgs/development/libraries/libedit/default.nix
index 167aa206865..5adef716eb0 100644
--- a/pkgs/development/libraries/libedit/default.nix
+++ b/pkgs/development/libraries/libedit/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   ] else null;
 
   postInstall = ''
-    sed -i ${stdenv.lib.optionalString (stdenv.isDarwin && stdenv.cc.nativeLibc) "''"} s/-lncurses/-lncursesw/g $out/lib/pkgconfig/libedit.pc
+    sed -i s/-lncurses/-lncursesw/g $out/lib/pkgconfig/libedit.pc
   '';
 
   configureFlags = [ "--enable-widec" ];
diff --git a/pkgs/stdenv/darwin/default.nix b/pkgs/stdenv/darwin/default.nix
index 98fc35074c2..9ad2c8504d1 100644
--- a/pkgs/stdenv/darwin/default.nix
+++ b/pkgs/stdenv/darwin/default.nix
@@ -106,7 +106,7 @@ rec {
       inherit system config;
       inherit (stage1.stdenv) shell fetchurlBoot preHook cc;
 
-      initialPath = [ stage1.pkgs.xz ] ++ stage1.stdenv.initialPath;
+      initialPath = [ stage1.pkgs.xz stage1.pkgs.gnused ] ++ stage1.stdenv.initialPath;
     };
     pkgs = allPackages {
       inherit system platform;
diff --git a/pkgs/stdenv/darwin/trivial-bootstrap.sh b/pkgs/stdenv/darwin/trivial-bootstrap.sh
index 0915b378d4f..487f1488658 100644
--- a/pkgs/stdenv/darwin/trivial-bootstrap.sh
+++ b/pkgs/stdenv/darwin/trivial-bootstrap.sh
@@ -12,6 +12,7 @@ cd $out/bin
 ln -s $mkdir
 ln -s /bin/sh
 ln -s /bin/cp
+ln -s /bin/dd
 ln -s /bin/mv
 ln -s /bin/rm
 ln -s /bin/ls
@@ -63,4 +64,4 @@ ln -s /usr/bin/which
 ln -s /usr/bin/install
 ln -s /usr/bin/basename
 ln -s /usr/bin/dirname
-ln -s /usr/bin/readlink
\ No newline at end of file
+ln -s /usr/bin/readlink
diff --git a/pkgs/tools/archivers/sharutils/default.nix b/pkgs/tools/archivers/sharutils/default.nix
index cc9618c4dcc..a7135346d2f 100644
--- a/pkgs/tools/archivers/sharutils/default.nix
+++ b/pkgs/tools/archivers/sharutils/default.nix
@@ -8,14 +8,11 @@ stdenv.mkDerivation rec {
     sha256 = "1mallg1gprimlggdisfzdmh1xi676jsfdlfyvanlcw72ny8fsj3g";
   };
 
-  preConfigure =
-    let needSedSpace = ((stdenv.isFreeBSD || stdenv.isOpenBSD) && stdenv.cc.nativeTools)
-                    || (stdenv.isDarwin && stdenv.cc.nativeLibc);
-    in ''
-       # Fix for building on Glibc 2.16.  Won't be needed once the
-       # gnulib in sharutils is updated.
-       sed -i ${stdenv.lib.optionalString needSedSpace "''"} '/gets is a security hole/d' lib/stdio.in.h
-    '';
+  preConfigure = ''
+     # Fix for building on Glibc 2.16.  Won't be needed once the
+     # gnulib in sharutils is updated.
+     sed -i ${stdenv.lib.optionalString ((stdenv.isFreeBSD || stdenv.isOpenBSD) && stdenv.cc.nativeTools) "''"} '/gets is a security hole/d' lib/stdio.in.h
+  '';
 
   # GNU Gettext is needed on non-GNU platforms.
   buildInputs = [ gettext coreutils ];