diff --git a/generate-linear-patch-sequence.sh b/generate-linear-patch-sequence.sh
new file mode 100755
index 0000000..5772ad0
--- /dev/null
+++ b/generate-linear-patch-sequence.sh
@@ -0,0 +1,17 @@
+#! /bin/sh -e
+
+releasesDir=test
+
+prev=""
+
+for i in $(cd "$releasesDir" && ls -d nixpkgs-*pre* | sort -n); do
+    if test -e "$releasesDir/$i/MANIFEST"; then
+	if test -n "$prev" -a ! -e "$releasesDir/$i/patches-created"; then
+	    echo $prev "->" $i
+	    date
+	    time ./generate-patches.sh "$releasesDir/$prev" "$releasesDir/$i"
+	    touch "$releasesDir/$i/patches-created"
+	fi
+	prev=$i
+    fi
+done
diff --git a/generate-patches.sh b/generate-patches.sh
new file mode 100755
index 0000000..4161b98
--- /dev/null
+++ b/generate-patches.sh
@@ -0,0 +1,14 @@
+#! /bin/sh -e
+src="$1"
+dst="$2"
+
+if test ! -d "$src" -o ! -d "$dst"; then
+    echo "syntax: $0 source-dir dest-dir"
+    exit 1
+fi
+
+nix-generate-patches \
+  /data/releases/nars \
+  /data/releases/patches \
+  http://nixos.org/releases/patches \
+  "$src/MANIFEST" "$dst/MANIFEST"
diff --git a/mirror-nixos-isos.sh b/mirror-nixos-isos.sh
new file mode 100755
index 0000000..b81a22f
--- /dev/null
+++ b/mirror-nixos-isos.sh
@@ -0,0 +1,57 @@
+#! /bin/sh -e
+
+# This script downloads the latest NixOS ISO images from the "tested"
+# view in Hydra to $mirrorDir (http://nixos.org/releases/nixos).
+
+curl="curl --silent --show-error --fail"
+wget="wget --no-verbose --content-disposition"
+
+mirrorDir=/data/releases/nixos
+
+url=$($curl --head http://hydra.nixos.org/view/nixos/tested/latest | sed 's/Location: \(.*\)\r/\1/; t; d')
+
+if [ -z "$url" ]; then exit 1; fi
+
+echo "View page is $url"
+
+release=$($curl $url | sed 's|<h1>View.*(<tt>\(.*\)</tt>.*|\1|; t; d')
+
+if [ -z "$release" ]; then echo "Failed to get release"; exit 1; fi
+
+echo "Release is $release"
+
+releaseDir=$mirrorDir/$release
+
+if [ -d $releaseDir ]; then
+    echo "Release already exists"
+else
+
+    tmpDir=$mirrorDir/.tmp-$release-$$
+    mkdir -p $tmpDir
+
+    $wget --directory=$tmpDir $url/tarball/download
+    $wget --directory=$tmpDir $url/iso_minimal-i686-linux/download
+    $wget --directory=$tmpDir $url/iso_minimal-x86_64-linux/download
+    $wget --directory=$tmpDir $url/iso_graphical-i686-linux/download
+    $wget --directory=$tmpDir $url/iso_graphical-x86_64-linux/download
+
+    mv $tmpDir $releaseDir
+
+fi
+
+#ln -sfn $release $mirrorDir/latest
+
+# Generate a .htaccess with some symbolic redirects to the latest version.
+htaccess=$mirrorDir/.htaccess
+
+echo "Redirect /releases/nixos/latest http://nixos.org/releases/nixos/$release" > $htaccess.tmp
+fn=$(cd $releaseDir && echo nixos-minimal-*-i686-linux.iso)
+echo "Redirect /releases/nixos/latest-iso-minimal-i686-linux http://nixos.org/releases/nixos/$release/$fn" >> $htaccess.tmp
+fn=$(cd $releaseDir && echo nixos-minimal-*-x86_64-linux.iso)
+echo "Redirect /releases/nixos/latest-iso-minimal-x86_64-linux http://nixos.org/releases/nixos/$release/$fn" >> $htaccess.tmp
+fn=$(cd $releaseDir && echo nixos-graphical-*-i686-linux.iso)
+echo "Redirect /releases/nixos/latest-iso-graphical-i686-linux http://nixos.org/releases/nixos/$release/$fn" >> $htaccess.tmp
+fn=$(cd $releaseDir && echo nixos-graphical-*-x86_64-linux.iso)
+echo "Redirect /releases/nixos/latest-iso-graphical-x86_64-linux http://nixos.org/releases/nixos/$release/$fn" >> $htaccess.tmp
+
+mv $htaccess.tmp $htaccess