gistfile1.txt

diff --git a/lib/cache.js b/lib/cache.js
index 42dc169..9202be5 100644
--- a/lib/cache.js
+++ b/lib/cache.js
@@ -213,7 +213,7 @@ function unpackTar (tarball, unpackTarget, cb) {
     // gzip {tarball} --decompress --stdout | tar xf - --strip-components=1 -C {unpackTarget}
     pipe( spawn(npm.config.get("gzipbin"), ["--decompress", "--stdout", tarball])
         , spawn( npm.config.get("tar")
-               , ["vx", "--strip-components=1", "-C", unpackTarget]
+                , ["xpf", "-", "--strip-components=1", "-C", unpackTarget]
                )
         , log.er(cb, "Failed unpacking the tarball.\n"
                    + "This is very rare. Perhaps the 'gzip' or 'tar' configs\n"