diff --git a/meta-selftest/recipes-test/postinst/postinst_1.0.bb b/meta-selftest/recipes-test/postinst/postinst_1.0.bb
index 6d497342779..112aa08c80f 100644
--- a/meta-selftest/recipes-test/postinst/postinst_1.0.bb
+++ b/meta-selftest/recipes-test/postinst/postinst_1.0.bb
@@ -1,126 +1,70 @@
+SUMMARY = "Packages to exercise postinstall functions"
 LICENSE = "MIT"
-ALLOW_EMPTY_${PN}-at-rootfs = "1"
+
+inherit allarch
+
+PACKAGES = "${PN}-rootfs ${PN}-delayed-a ${PN}-delayed-b"
+
+ALLOW_EMPTY_${PN}-rootfs = "1"
 ALLOW_EMPTY_${PN}-delayed-a = "1"
 ALLOW_EMPTY_${PN}-delayed-b = "1"
-ALLOW_EMPTY_${PN}-delayed-d = "1"
-ALLOW_EMPTY_${PN}-delayed-p = "1"
-ALLOW_EMPTY_${PN}-delayed-t = "1"
-
-PACKAGES += "${PN}-at-rootfs ${PN}-delayed-a ${PN}-delayed-b ${PN}-delayed-d ${PN}-delayed-p ${PN}-delayed-t"
-PROVIDES += "${PN}-at-rootfs ${PN}-delayed-a ${PN}-delayed-b ${PN}-delayed-d ${PN}-delayed-p ${PN}-delayed-t"
-FILES_${PN}-delayed-a = ""
-FILES_${PN}-delayed-b = ""
-FILES_${PN}-delayed-d = ""
-FILES_${PN}-delayed-p = ""
-FILES_${PN}-delayed-t = ""
-
-# Runtime dependencies
-RDEPENDS_${PN}-delayed-a = "${PN}-at-rootfs"
+
+RDEPENDS_${PN}-delayed-a = "${PN}-rootfs"
 RDEPENDS_${PN}-delayed-b = "${PN}-delayed-a"
-RDEPENDS_${PN}-delayed-d = "${PN}-delayed-b"
-RDEPENDS_${PN}-delayed-p = "${PN}-delayed-d"
-RDEPENDS_${PN}-delayed-t = "${PN}-delayed-p"
-
-# Main recipe post-install
-pkg_postinst_${PN}-at-rootfs () {
-    tfile="/etc/postinsta-test"
-    touch "$D"/this-was-created-at-rootfstime
-    if test "x$D" != "x" then
-        # Need to run on first boot
+
+TESTDIR = "${sysconfdir}/postinst-test"
+
+# At rootfs time touch $TESTDIR/rootfs.  Errors if the file already exists, or
+# if the function runs on first boot.
+pkg_postinst_${PN}-rootfs () {
+    set -e
+
+    if [ -z "$D" ]; then
+        echo "${PN}-rootfs should have finished at rootfs time"
+        exit 1
+    fi
+
+    if [ -e $D${TESTDIR}/rootfs ]; then
+        echo "$D${TESTDIR}/rootfs exists, but should not"
         exit 1
-    else
-        echo "lets write postinst" > $tfile
     fi
+
+    mkdir -p $D${TESTDIR}
+    touch $D${TESTDIR}/rootfs
 }
 
-# Dependency recipes post-installs
+# Depends on rootfs, delays until first boot, verifies that the rootfs file was
+# written.
 pkg_postinst_${PN}-delayed-a () {
-    efile="/etc/postinst-test"
-    tfile="/etc/postinsta-test"
-    rdeps="postinst"
-
-    if test "x$D" != "x"; then
-      # Need to run on first boot
-      exit 1
-    else
-      touch /etc/this-was-created-at-first-boot
-      if test -e $efile ; then
-        echo 'success' > $tfile
-      else
-        echo 'fail to install $rdeps first!' >&2
+    set -e
+
+    if [ -n "$D" ]; then
+        echo "Delaying ${PN}-delayed-a until first boot"
         exit 1
-      fi
-   fi
-}
+    fi
 
-pkg_postinst_${PN}-delayed-b () {
-    efile="/etc/postinsta-test"
-    tfile="/etc/postinstb-test"
-    rdeps="postinsta"
-
-    if test "x$D" != "x"; then
-      # Need to run on first boot
-      exit 1
-    else
-      if test -e $efile ; then
-        echo 'success' > $tfile
-      else
-        echo 'fail to install $rdeps first!' >&2
+    if [ ! -e ${TESTDIR}/rootfs ]; then
+        echo "${PN}-delayed-a: ${TESTDIR}/rootfs not found"
         exit 1
-      fi
-   fi
+    fi
+
+    touch ${TESTDIR}/delayed-a
 }
 
-pkg_postinst_${PN}-delayed-d () {
-    efile="/etc/postinstb-test"
-    tfile="/etc/postinstd-test"
-    rdeps="postinstb"
-
-    if test "x$D" != "x"; then
-      # Need to run on first boot
-      exit 1
-    else
-      if test -e $efile ; then
-        echo 'success' > $tfile
-      else
-        echo 'fail to install $rdeps first!' >&2
+# Depends on delayed-a, delays until first boot, verifies that the delayed-a file was
+# written. This verifies the ordering between delayed postinsts.
+pkg_postinst_${PN}-delayed-b () {
+    set -e
+
+    if [ -n "$D" ]; then
+        echo "Delaying ${PN}-delayed-b until first boot"
         exit 1
-      fi
-   fi
-}
+    fi
 
-pkg_postinst_${PN}-delayed-p () {
-    efile="/etc/postinstd-test"
-    tfile="/etc/postinstp-test"
-    rdeps="postinstd"
-
-    if test "x$D" != "x"; then
-      # Need to run on first boot
-      exit 1
-    else
-      if test -e $efile ; then
-        echo 'success' > $tfile
-      else
-        echo 'fail to install $rdeps first!' >&2
+    if [ ! -e ${TESTDIR}/delayed-a ]; then
+        echo "${PN}-delayed-b: ${TESTDIR}/delayed-a not found"
         exit 1
-      fi
-   fi
-}
+    fi
 
-pkg_postinst_${PN}-delayed-t () {
-    efile="/etc/postinstp-test"
-    tfile="/etc/postinstt-test"
-    rdeps="postinstp"
-
-    if test "x$D" != "x"; then
-      # Need to run on first boot
-      exit 1
-    else
-      if test -e $efile ; then
-          echo 'success' > $tfile
-      else
-          echo 'fail to install $rdeps first!' >&2
-          exit 1
-      fi
-   fi
+    touch ${TESTDIR}/delayed-b
 }
