1 files changed, 17 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/build-support/release/functions.sh b/nixpkgs/pkgs/build-support/release/functions.sh
new file mode 100644
index 000000000000..0c4b81edf822
--- /dev/null
+++ b/nixpkgs/pkgs/build-support/release/functions.sh
@@ -0,0 +1,17 @@
+findTarball() {
+    local suffix i
+    if [ -d "$1/tarballs/" ]; then
+        for suffix in tar.gz tgz tar.bz2 tbz2 tbz tar.xz txz tar.lzma; do
+            for i in $1/tarballs/*.$suffix; do echo $i; break; done
+        done | sort | head -1
+        return
+    else
+        echo "$1"
+        return
+    fi
+}
+
+propagateImageName() {
+    mkdir -p $out/nix-support
+    cat "$diskImage"/nix-support/full-name > $out/nix-support/full-name
+}