1 files changed, 32 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/common-updater/scripts/list-git-tags b/nixpkgs/pkgs/common-updater/scripts/list-git-tags
new file mode 100755
index 000000000000..ff09671c7cb0
--- /dev/null
+++ b/nixpkgs/pkgs/common-updater/scripts/list-git-tags
@@ -0,0 +1,32 @@
+#! /bin/sh -x
+
+# lists all available tags from a git repository
+
+scriptName=list-git-tags # do not use the .wrapped name
+
+usage() {
+    echo "Usage: $scriptName <repository url> [<package name> [<debug file path>]]"
+}
+
+repo="$1" # git repository url
+pname="$2" # package name
+file="$3" # file for writing debugging information
+
+if [ -z "$repo" ]; then
+    echo "$scriptName: Missing git repository url"
+    usage
+    exit 1
+fi
+
+# print a debugging message
+if [ -n "$file" ]; then
+    echo "# Listing tags for $pname at $repo" >> $file
+fi
+
+# list all tags from the remote repository
+tags=$(git ls-remote --tags --refs "$repo")
+
+# keep only the version part of the tag
+tags=$(echo "$tags" | cut --delimiter=/ --field=3)
+
+echo "$tags"