From b2aae762fc5740a6e471745e85d1f0287ddabb8b Mon Sep 17 00:00:00 2001
From: Daniel Wagner-Hall <daniel@matrix.org>
Date: Mon, 19 Oct 2015 12:36:49 +0100
Subject: [PATCH] Give useful error if z-schema is missing

---
 event-schemas/check.sh | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/event-schemas/check.sh b/event-schemas/check.sh
index fac36cf8..a6d03b5a 100755
--- a/event-schemas/check.sh
+++ b/event-schemas/check.sh
@@ -1,5 +1,11 @@
 #!/bin/bash -e
 # Runs z-schema over all of the schema files (looking for matching examples)
+
+if ! which z-schema; then
+  echo >&2 "Need to install z-schema; run: sudo npm install -g z-schema"
+  exit 1
+fi
+
 find schema/v1/m.* | while read line
 do
     split_path=(${line///// })