Initial commit

1 files changed, 36 insertions, 0 deletions

diff --git a/detect-old-perl-modules.sh b/detect-old-perl-modules.sh
new file mode 100644
index 000000000000..cdc8df3a5260
--- /dev/null
+++ b/detect-old-perl-modules.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+basedir=/usr/lib/perl5
+perlver=$(perl -e '$v = $^V->{version}; print $v->[0].".".($v->[1]);')
+
+dir_empty() {
+	local dir=$1
+	[[ $(find $dir -maxdepth 0 -empty -exec echo empty \;) = "empty" ]] && return 0 || return 1
+}
+
+print_unowned_files() {
+	local dir=$1
+	LC_ALL=C find "$dir" -type f -exec pacman -Qqo {} + |& sed -n 's/^error: No package owns \(.*\)$/\1/p'
+}
+
+for dir in "$basedir/"*; do
+	if [[ "${dir##*/}" != "$perlver" ]]; then
+		if [[ -d "$dir" ]] && ! dir_empty "$dir"; then
+			pkgcount=$(pacman -Qqo "$dir" | wc -l)
+			if ((pkgcount > 0)); then
+				printf "WARNING: '%s' contains data from at least %d packages which will NOT be used by the installed perl interpreter.\n" "$dir" "$pkgcount"
+				printf " -> Run the following command to get a list of affected packages: pacman -Qqo '%s'\n" "$dir"
+			fi
+
+			unowned_count=$(print_unowned_files "$dir" | wc -l)
+			if ((unowned_count > 0)); then
+				printf "WARNING: %d file(s) in %s are not tracked by pacman and need to be rebuilt.\n" "$unowned_count" "$dir"
+				printf " -> These were most likely installed directly by cpan or a similar tool.\n"
+				printf "    Run the following command to get a list of these files:\n"
+				printf "    LC_ALL=C find \"%s\" -type f -exec pacman -Qqo {} + |& sed -n 's/^error: No package owns \(.*\)$/\\\1/p'\n" "$dir"
+			fi
+		fi
+	fi
+done
+
+