Use shutil.copyfileobj to avoid excessive memory use

Thanks to Richard Maw for pointing this out! I need to get out of my
ancient habits and use the modern Python stdlib and rember that files
in these degenerate modern times can be larger than 64 KiB.

1 files changed, 1 insertions, 1 deletions

diff --git a/morphlib/app.py b/morphlib/app.py
index d149e76f..443b1733 100755
--- a/morphlib/app.py
+++ b/morphlib/app.py
@@ -258,7 +258,7 @@ class Morph(cliapp.Application):
             if not lac.has(chunk_artifact) and rac:
                 remote = rac.get(chunk_artifact)
                 local = lac.put(chunk_artifact)
-                local.write(remote.read())
+                shutil.copyfileobj(remote, local)
                 remote.close()
                 local.close()
             handle = lac.get(chunk_artifact)