pure darwin stdenv

pkgs/development/interpreters/perl/5.16/default.nix

@@ -24,6 +24,17 @@ stdenv.mkDerivation rec {
     ++ lib.optional stdenv.isSunOS  ./ld-shared.patch
     ++ lib.optional stdenv.isDarwin [ ./cpp-precomp.patch ./no-libutil.patch ] ;
 
+  # There's an annoying bug on sandboxed Darwin in Perl's Cwd.pm where it looks for pwd
+  # in /bin/pwd and /usr/bin/pwd and then falls back on just "pwd" if it can't get them
+  # while at the same time erasing the PATH environment variable so it unconditionally
+  # fails. The code in question is guarded by a check for Mac OS, but the patch below
+  # doesn't have any runtime effect on other platforms.
+  postPatch = ''
+    pwd="$(type -P pwd)"
+    substituteInPlace dist/Cwd/Cwd.pm \
+      --replace "pwd_cmd = 'pwd'" "pwd_cmd = '$pwd'"
+  '';
+
   # Build a thread-safe Perl with a dynamic libperls.o.  We need the
   # "installstyle" option to ensure that modules are put under
   # $out/lib/perl5 - this is the general default, but because $out

pkgs/development/interpreters/perl/5.20/default.nix

@@ -35,6 +35,17 @@ stdenv.mkDerivation rec {
     ++ optional stdenv.isSunOS ./ld-shared.patch
     ++ stdenv.lib.optional stdenv.isDarwin [ ./cpp-precomp.patch ./no-libutil.patch ] ;
 
+  # There's an annoying bug on sandboxed Darwin in Perl's Cwd.pm where it looks for pwd
+  # in /bin/pwd and /usr/bin/pwd and then falls back on just "pwd" if it can't get them
+  # while at the same time erasing the PATH environment variable so it unconditionally
+  # fails. The code in question is guarded by a check for Mac OS, but the patch below
+  # doesn't have any runtime effect on other platforms.
+  postPatch = ''
+    pwd="$(type -P pwd)"
+    substituteInPlace dist/PathTools/Cwd.pm \
+      --replace "pwd_cmd = 'pwd'" "pwd_cmd = '$pwd'"
+  '';
+
   # Build a thread-safe Perl with a dynamic libperls.o.  We need the
   # "installstyle" option to ensure that modules are put under
   # $out/lib/perl5 - this is the general default, but because $out