unpackPhase: Handle sources starting with a hyphen

shlevy · shlevy · commit f83b6e1130e3 · 2018-01-24T21:58:57.000-08:00
diff --git a/pkgs/stdenv/generic/setup.sh b/pkgs/stdenv/generic/setup.sh
@@ -769,7 +769,7 @@ _defaultUnpack() {
         # We can't preserve hardlinks because they may have been
         # introduced by store optimization, which might break things
         # in the build.
-        cp -pr --reflink=auto "$fn" "$(stripHash "$fn")"
+        cp -pr --reflink=auto -- "$fn" "$(stripHash "$fn")"
 
     else
 
