diff --git a/kiss b/kiss
index 057b40d..c0f37ab 100755
--- a/kiss
+++ b/kiss
@@ -1647,9 +1647,9 @@ main() {
     # Create the required temporary directories and set the variables
     # which point to them.
     mkdir -p "${cac_dir:=${XDG_CACHE_HOME:-$HOME/.cache}/kiss}" \
-             "${mak_dir:=$cac_dir/build-$pid}" \
-             "${pkg_dir:=$cac_dir/pkg-$pid}" \
-             "${tar_dir:=$cac_dir/extract-$pid}" \
+             "${mak_dir:=${KISS_TMPDIR:-$cac_dir}/build-$pid}" \
+             "${pkg_dir:=${KISS_TMPDIR:-$cac_dir}/pkg-$pid}" \
+             "${tar_dir:=${KISS_TMPDIR:-$cac_dir}/extract-$pid}" \
              "${src_dir:=$cac_dir/sources}" \
              "${log_dir:=$cac_dir/logs}" \
              "${bin_dir:=$cac_dir/bin}"
diff --git a/kiss.1 b/kiss.1
index 99eb170..b607078 100644
--- a/kiss.1
+++ b/kiss.1
@@ -85,6 +85,11 @@ export KISS_FORCE=0
 #
 export KISS_HOOK=/path/to/script
 
+# Temporary directory (for builds).
+# Allows one to build packages in ram or another location.
+#
+export KISS_TMPDIR=""
+
 # Root directory.
 #
 # Where installed packages will go. You won't ever need