diff --git a/bin/install-qa-check.d/50xdg-utils b/bin/install-qa-check.d/50xdg-utils
new file mode 100644
index 0000000000..3e0537f35a
--- /dev/null
+++ b/bin/install-qa-check.d/50xdg-utils
@@ -0,0 +1,107 @@
+# Check for missing calls to xdg-utils regen functions
+
+xdg_desktop_database_check() {
+	local d f all_files=() missing
+	for d in usr/share/applications; do
+		[[ -d ${d} ]] || continue
+
+		# Look for any .desktop files that have any mime types defined
+		while read -r -d $'\0' f; do
+			all_files+=( "${f}" )
+		done < <(find "${d}" -name '*.desktop' \
+			-exec grep -lZi '^MimeType=' {} +)
+	done
+
+	if [[ -z ${all_files[@]} ]]; then
+		:
+	elif ! has xdg-utils ${INHERITED}; then
+		missing='xdg-utils was not inherited'
+	elif ! declare -f pkg_postinst | grep -q -E '(xdg_desktop_database_update|(ecm|gnome|java-vm-2|xdg)_pkg_postinst)'; then
+		missing='xdg-utils was not used'
+	elif ! declare -f pkg_postrm | grep -q -E '(xdg_desktop_database_update|(ecm|gnome|java-vm-2|xdg)_pkg_postrm)'; then
+		missing='xdg-utils was not used'
+	fi
+
+	if [[ ${missing} && ${all_files[@]} ]]; then
+		eqawarn "QA Notice: .desktop files with MimeType= were found installed"
+		eqawarn "but ${missing}:"
+		eqatag -v xdg-utils.desktop "${all_files[@]/#//}"
+		eqawarn "Please make sure to call xdg_desktop_database_update()"
+		eqawarn "in pkg_postinst() and pkg_postrm() phases of appropriate pkgs."
+	fi
+}
+
+xdg_icon_cache_check() {
+	local d f all_files=() missing
+	for d in usr/share/icons/*/; do
+		local find_args=(
+			# gtk-update-icon-cache supports only specific file
+			# suffixes; match that to avoid false positives
+			'(' -name '*.png' -o -name '*.svg'
+				-o -name '*.xpm' -o -name '*.icon' ')'
+		)
+
+		# (use -mindepth 2 to easily skip the cache files)
+		while read -r -d $'\0' f; do
+			all_files+=( "${f}" )
+		done < <(find "${d}" -mindepth 2 -type f "${find_args[@]}" -print0)
+	done
+
+	if [[ -z ${all_files[@]} ]]; then
+		:
+	elif ! has xdg-utils ${INHERITED}; then
+		missing='xdg-utils was not inherited'
+	elif ! declare -f pkg_postinst | grep -q -E '(xdg_icon_cache_update|(ecm|gnome|xdg)_pkg_postinst)'; then
+		missing='xdg-utils was not used'
+	elif ! declare -f pkg_postrm | grep -q -E '(xdg_icon_cache_update|(ecm|gnome|xdg)_pkg_postrm)'; then
+		missing='xdg-utils was not used'
+	fi
+
+	if [[ ${missing} ]]; then
+		eqawarn "QA Notice: new icons were found installed but ${missing}:"
+		eqatag -v xdg-utils.icon-cache "${all_files[@]/#//}"
+		eqawarn "Please make sure to call xdg_icon_cache_update()"
+		eqawarn "in pkg_postinst() and pkg_postrm() phases of appropriate pkgs."
+	fi
+}
+
+xdg_mimeinfo_database_check() {
+	local d f all_files=() missing
+	for d in usr/share/mime; do
+		[[ -d ${d} ]] || continue
+
+		while read -r -d $'\0' f; do
+			all_files+=( "${f}" )
+		done < <(find "${d}" -name '*.xml' -print0)
+	done
+
+	if [[ -z ${all_files[@]} ]]; then
+		:
+	elif ! has xdg-utils ${INHERITED}; then
+		missing='xdg-utils was not inherited'
+	elif ! declare -f pkg_postinst | grep -q -E '(xdg_mimeinfo_database_update|(ecm|gnome|xdg)_pkg_postinst)'; then
+		missing='xdg-utils was not used'
+	elif ! declare -f pkg_postrm | grep -q -E '(xdg_mimeinfo_database_update|(ecm|gnome|xdg)_pkg_postrm)'; then
+		missing='xdg-utils was not used'
+	fi
+
+	if [[ ${missing} && ${all_files[@]} ]]; then
+		eqawarn "QA Notice: mime-info files were found installed but"
+		eqawarn "${missing}:"
+		eqatag -v xdg-utils.mime-info "${all_files[@]/#//}"
+		eqawarn "Please make sure to call xdg_mimeinfo_database_update()"
+		eqawarn "in pkg_postinst() and pkg_postrm() phases of appropriate pkgs."
+	fi
+}
+
+xdg_utils_postinst_check() {
+	cd "${D}" || die
+	xdg_desktop_database_check
+	xdg_icon_cache_check
+	xdg_mimeinfo_database_check
+}
+
+xdg_utils_postinst_check
+: # guarantee successful exit
+
+# vim:ft=sh
diff --git a/bin/postinst-qa-check.d/50xdg-utils b/bin/postinst-qa-check.d/50xdg-utils
deleted file mode 100644
index 2951ae05c6..0000000000
--- a/bin/postinst-qa-check.d/50xdg-utils
+++ /dev/null
@@ -1,156 +0,0 @@
-# Check for missing calls to xdg-utils regen functions
-
-xdg_desktop_database_check() {
-	type -P update-desktop-database &>/dev/null || return
-
-	local d f all_files=() missing
-	for d in usr/share/applications; do
-		[[ -d ${d} ]] || continue
-
-		local files=() find_args=()
-		# If the cache does not exist at all, we complain for any file
-		# otherwise, we look for files newer than the cache
-		[[ -f ${d}/mimeinfo.cache ]] &&
-			find_args+=( -newercm "${d}"/mimeinfo.cache ) || missing=1
-
-		# Look for any .desktop files that are newer than the cache
-		# and that have any mime types defined
-		while read -r -d $'\0' f; do
-			files+=( "${f}" )
-		done < <(find "${d}" -name '*.desktop' "${find_args[@]}" \
-			-exec grep -lZi '^MimeType=' {} +)
-
-		# If any files were found, update the db to avoid repeating
-		# the warning for subsequent packages
-		if [[ ${files[@]} ]]; then
-			all_files+=("${files[@]}")
-			addwrite "${d}"
-			update-desktop-database "${d}"
-		fi
-	done
-
-	# Preinst initializes the baseline state for the posinst check
-	[[ ${PORTAGE_QA_PHASE} == preinst ]] && return
-
-	# Parallel-install makes it impossible to blame a specific package
-	has parallel-install ${FEATURES} && return
-
-	# The eqatag call is prohibitively expensive if the cache is
-	# missing and there are a large number of files.
-	if [[ -z ${missing} && ${all_files[@]} ]]; then
-		eqawarn "QA Notice: .desktop files with MimeType= were found installed"
-		eqawarn "but desktop mimeinfo cache has not been updated:"
-		eqatag -v xdg-utils.desktop "${all_files[@]/#//}"
-		eqawarn "Please make sure to call xdg_desktop_database_update()"
-		eqawarn "in pkg_postinst() and pkg_postrm() phases of appropriate pkgs."
-	fi
-}
-
-xdg_icon_cache_check() {
-	type -P gtk-update-icon-cache &>/dev/null || return
-
-	local d f all_files=() missing
-	for d in usr/share/icons/*/; do
-		# xdg_icon_cache_update updates only themes with an index
-		[[ -f ${d}/index.theme ]] || continue
-
-		local files=() find_args=(
-			# gtk-update-icon-cache supports only specific file
-			# suffixes; match that to avoid false positives
-			'(' -name '*.png' -o -name '*.svg'
-				-o -name '*.xpm' -o -name '*.icon' ')'
-		)
-
-		# If the cache does not exist at all, we complain for any file
-		# otherwise, we look for files newer than the cache
-		[[ -f ${d}/icon-theme.cache ]] &&
-			find_args+=( -newercm "${d}"/icon-theme.cache ) || missing=1
-
-		# (use -mindepth 2 to easily skip the cache files)
-		while read -r -d $'\0' f; do
-			files+=( "${f}" )
-		done < <(find "${d}" -mindepth 2 -type f "${find_args[@]}" -print0)
-
-		# If any files were found, update the db to avoid repeating
-		# the warning for subsequent packages
-		if [[ ${files[@]} ]]; then
-			all_files+=("${files[@]}")
-			addwrite "${d}"
-			gtk-update-icon-cache -qf "${d}"
-		fi
-	done
-
-	# preinst initializes the baseline state for the posinst check
-	[[ ${PORTAGE_QA_PHASE} == preinst ]] && return
-
-	# parallel-install makes it impossible to blame a specific package
-	has parallel-install ${FEATURES} && return
-
-	# Avoid false-positives on first install (bug #649464)
-	[[ ${PN} == gtk-update-icon-cache ]] && return
-
-	# The eqatag call is prohibitively expensive if the cache is
-	# missing and there are a large number of files.
-	if [[ -z ${missing} && ${all_files[@]} ]]; then
-		eqawarn "QA Notice: new icons were found installed but icon cache"
-		eqawarn "has not been updated:"
-		eqatag -v xdg-utils.icon-cache "${all_files[@]/#//}"
-		eqawarn "Please make sure to call xdg_icon_cache_update()"
-		eqawarn "in pkg_postinst() and pkg_postrm() phases of appropriate pkgs."
-	fi
-}
-
-xdg_mimeinfo_database_check() {
-	type -P update-mime-database &>/dev/null || return
-
-	local d f all_files=() missing
-	for d in usr/share/mime; do
-		[[ -d ${d} ]] || continue
-
-		local files=() find_args=()
-		# If the cache does not exist at all, we complain for any file
-		# otherwise, we look for files newer than the cache
-		[[ -f ${d}/mime.cache ]] &&
-			find_args+=( -newercm "${d}"/mime.cache ) || missing=1
-
-		while read -r -d $'\0' f; do
-			files+=( "${f}" )
-		done < <(find "${d}" -name '*.xml' "${find_args[@]}" -print0)
-
-		# if any files were found, update the db to avoid repeating
-		# the warning for subsequent packages
-		if [[ ${files[@]} ]]; then
-			all_files+=("${files[@]}")
-			addwrite "${d}"
-			update-mime-database "${d}"
-		fi
-	done
-
-	# preinst initializes the baseline state for the posinst check
-	[[ ${PORTAGE_QA_PHASE} == preinst ]] && return
-
-	# parallel-install makes it impossible to blame a specific package
-	has parallel-install ${FEATURES} && return
-
-	# The eqatag call is prohibitively expensive if the cache is
-	# missing and there are a large number of files.
-	if [[ -z ${missing} && ${all_files[@]} ]]; then
-		eqawarn "QA Notice: mime-info files were found installed but mime-info"
-		eqawarn "cache has not been updated:"
-		eqatag -v xdg-utils.mime-info "${all_files[@]/#//}"
-		eqawarn "Please make sure to call xdg_mimeinfo_database_update()"
-		eqawarn "in pkg_postinst() and pkg_postrm() phases of appropriate pkgs."
-	fi
-}
-
-xdg_utils_postinst_check() {
-	cd "${EROOT:-/}" || die
-	xdg_desktop_database_check
-	xdg_icon_cache_check
-	xdg_mimeinfo_database_check
-}
-
-xdg_utils_postinst_check
-: # guarantee successful exit
-
-# vim:ft=sh
diff --git a/bin/preinst-qa-check.d/50xdg-utils b/bin/preinst-qa-check.d/50xdg-utils
deleted file mode 120000
index 16f68a471d..0000000000
--- a/bin/preinst-qa-check.d/50xdg-utils
+++ /dev/null
@@ -1 +0,0 @@
-../postinst-qa-check.d/50xdg-utils
\ No newline at end of file