rust 1.10 fails to build with local rust on OS X

[bcully]

I'm the maintainer of fink's rust package, trying to update it to 1.10.0. It currently fails trying to run the stage0 compiler:

rustc: x86_64-apple-darwin/stage0/lib/rustlib/x86_64-apple-darwin/lib/libcore
dyld: Library not loaded: @rpath/libarena-d16b8f0e.dylib
  Referenced from: /Users/brendan/tmp/rustc-1.10.0/x86_64-apple-darwin/stage0/bin/rustc
  Reason: image not found
make: *** [x86_64-apple-darwin/stage0/lib/rustlib/x86_64-apple-darwin/lib/stamp.core] Trace/BPT trap: 5

As far as I can tell, this is due to a bug in src/etc/local_stage0.sh. The following patch fixes it for me:

diff --git a/src/etc/local_stage0.sh b/src/etc/local_stage0.sh
index 354be34..9109df0 100755
--- a/src/etc/local_stage0.sh
+++ b/src/etc/local_stage0.sh
@@ -59,6 +59,7 @@ case "$TARG_DIR" in
 cp ${PREFIX}/bin/rustc${BIN_SUF} ${TARG_DIR}/stage0/bin/
 cp ${PREFIX}/${LIB_DIR}/${RUSTLIBDIR}/${TARG_DIR}/${LIB_DIR}/* ${TARG_DIR}/stage0/${LIB_DIR}/
 cp ${PREFIX}/${LIB_DIR}/${LIB_PREFIX}extra*${LIB_SUF} ${TARG_DIR}/stage0/${LIB_DIR}/
+cp ${PREFIX}/${LIB_DIR}/${LIB_PREFIX}arena*${LIB_SUF} ${TARG_DIR}/stage0/${LIB_DIR}/
 cp ${PREFIX}/${LIB_DIR}/${LIB_PREFIX}rust*${LIB_SUF} ${TARG_DIR}/stage0/${LIB_DIR}/
 cp ${PREFIX}/${LIB_DIR}/${LIB_PREFIX}std*${LIB_SUF} ${TARG_DIR}/stage0/${LIB_DIR}/
 cp ${PREFIX}/${LIB_DIR}/${LIB_PREFIX}syntax*${LIB_SUF} ${TARG_DIR}/stage0/${LIB_DIR}/

though honestly it looks a bit fragile this way and I wonder if there's a reason not to copy everything in that matches ${LIB_PREFIX}*${LIB_SUF}.