diff --git a/flake.nix b/flake.nix
index a50533a29..d0c3bfcd2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -235,6 +235,7 @@
             }
             ''
               cp ${installerClosureInfo}/registration $TMPDIR/reginfo
+              cp ${./scripts/create-darwin-volume.sh} $TMPDIR/create-darwin-volume.sh
               substitute ${./scripts/install-nix-from-closure.sh} $TMPDIR/install \
                 --subst-var-by nix ${nix} \
                 --subst-var-by cacert ${cacert}
@@ -253,6 +254,7 @@
                 # SC1090: Don't worry about not being able to find
                 #         $nix/etc/profile.d/nix.sh
                 shellcheck --exclude SC1090 $TMPDIR/install
+                shellcheck $TMPDIR/create-darwin-volume.sh
                 shellcheck $TMPDIR/install-darwin-multi-user.sh
                 shellcheck $TMPDIR/install-systemd-multi-user.sh
 
@@ -268,6 +270,7 @@
               fi
 
               chmod +x $TMPDIR/install
+              chmod +x $TMPDIR/create-darwin-volume.sh
               chmod +x $TMPDIR/install-darwin-multi-user.sh
               chmod +x $TMPDIR/install-systemd-multi-user.sh
               chmod +x $TMPDIR/install-multi-user
@@ -280,11 +283,15 @@
                 --absolute-names \
                 --hard-dereference \
                 --transform "s,$TMPDIR/install,$dir/install," \
+                --transform "s,$TMPDIR/create-darwin-volume.sh,$dir/create-darwin-volume.sh," \
                 --transform "s,$TMPDIR/reginfo,$dir/.reginfo," \
                 --transform "s,$NIX_STORE,$dir/store,S" \
-                $TMPDIR/install $TMPDIR/install-darwin-multi-user.sh \
+                $TMPDIR/install \
+                $TMPDIR/create-darwin-volume.sh \
+                $TMPDIR/install-darwin-multi-user.sh \
                 $TMPDIR/install-systemd-multi-user.sh \
-                $TMPDIR/install-multi-user $TMPDIR/reginfo \
+                $TMPDIR/install-multi-user \
+                $TMPDIR/reginfo \
                 $(cat ${installerClosureInfo}/store-paths)
             '');