diff --git a/maintainers/scripts/copy-tarball.sh b/maintainers/scripts/copy-tarball.sh
new file mode 100755
index 000000000000..9070977d7ce1
--- /dev/null
+++ b/maintainers/scripts/copy-tarball.sh
@@ -0,0 +1,36 @@
+#! /bin/sh -e
+
+distDir=/data/webserver/tarballs
+
+url="$1"
+if [ -z "$url" ]; then echo "syntax: $0 URL"; exit 0; fi
+
+base="$(basename "$url")"
+if [ -z "$base" ]; then echo "bad URL"; exit 1; fi
+dstPath="$distDir/$base"
+
+if [ -e "$dstPath" ]; then echo "$dstPath already exists"; exit 0; fi
+
+echo "downloading $url to $newPath"
+
+if [ -n "$dryRun" ]; then exit 0; fi
+
+declare -a res
+if ! res=($(PRINT_PATH=1 nix-prefetch-url "$url")); then
+    continue
+fi
+storePath=${res[1]}
+cp $storePath "$dstPath.tmp.$$"
+mv -f "$dstPath.tmp.$$" "$dstPath"
+
+echo "hashing $dstPath"
+
+md5=$(nix-hash --flat --type md5 "$dstPath")
+ln -sfn "../$base" $distDir/md5/$md5
+
+sha1=$(nix-hash --flat --type sha1 "$dstPath")
+ln -sfn "../$base" $distDir/sha1/$sha1
+
+sha256=$(nix-hash --flat --type sha256 "$dstPath")
+ln -sfn "../$base" $distDir/sha256/$sha256
+ln -sfn "../$base" $distDir/sha256/$(nix-hash --type sha256 --to-base32 "$sha256")
diff --git a/maintainers/scripts/copy-tarballs.sh b/maintainers/scripts/copy-tarballs.sh
index c8f357100036..c1ed90391910 100755
--- a/maintainers/scripts/copy-tarballs.sh
+++ b/maintainers/scripts/copy-tarballs.sh
@@ -1,57 +1,14 @@
 #! /bin/sh -e
 
-distDir=/data/webserver/tarballs
-
-urls=$(nix-instantiate --eval-only --xml --strict ./eval-release.nix \
+urls=$(nix-instantiate --eval-only --xml --strict '<nixpkgs/maintainers/scripts/eval-release.nix>' \
     | grep -A2 'name="urls"' \
     | grep '<string value=' \
     | sed 's/.*"\(.*\)".*/\1/' \
     | sort | uniq)
 
 for url in $urls; do
-    
     if echo "$url" | grep -q -E "www.cs.uu.nl|nixos.org|.stratego-language.org|java.sun.com|ut2004|linuxq3a|RealPlayer|Adbe|belastingdienst|microsoft|armijn/.nix|sun.com|archive.eclipse.org"; then continue; fi
-
-    base="$(basename "$url")"
-    newPath="$distDir/$base"
-
-    if ! test -e "$newPath"; then
-
-        #if echo $url | grep -q 'mirror://'; then
-        #   echo "$fn: skipping mirrored $url"
-        #   continue
-        #fi
-
-        echo "downloading $url to $newPath"
-
-        if test -n "$doCopy"; then
-            declare -a res
-            if ! res=($(PRINT_PATH=1 nix-prefetch-url "$url")); then
-                continue
-            fi
-            storePath=${res[1]}
-            cp $storePath "$newPath.tmp.$$"
-            mv -f "$newPath.tmp.$$" "$newPath"
-        fi
-        
-    fi
-
-    if test -n "$doCopy" -a -e "$newPath"; then
-
-        echo "hashing $newPath"
-
-        md5=$(nix-hash --flat --type md5 "$newPath")
-        ln -sfn "../$base" $distDir/md5/$md5
-
-        sha1=$(nix-hash --flat --type sha1 "$newPath")
-        ln -sfn "../$base" $distDir/sha1/$sha1
-
-        sha256=$(nix-hash --flat --type sha256 "$newPath")
-        ln -sfn "../$base" $distDir/sha256/$sha256
-        ln -sfn "../$base" $distDir/sha256/$(nix-hash --type sha256 --to-base32 "$sha256")
-
-    fi
-
+    $(dirname $0)/copy-tarball.sh "$url"
 done
 
 echo DONE