1 files changed, 20 insertions, 0 deletions
diff --git a/bin/preinstall.js b/bin/preinstall.js
new file mode 100755
index 0000000..536fe5a
--- /dev/null
+++ b/bin/preinstall.js
@@ -0,0 +1,20 @@
+#!/usr/bin/env node
+
+const package = require('../package.json');
+
+// Sorry everyone, this is the closest we can get to commenting on package.json
+// dependencies :(
+if (package.devDependencies['bourbon-neat'] !== '~1.9') {
+    // Wyrm is not compatible with Neat 2.0+, and Neat 1.9 at least pins a
+    // node-sass version that doesn't require Python 2. The changes to Wyrm to
+    // support Neat 2.0+ are all fairly minor changes, but it deeply affects the
+    // grid system and might be more of a liability than an old release of Neat.
+    // See: https://github.com/readthedocs/sphinx_rtd_theme/pull/771
+    console.error(
+        'bourbon-neat 1.9 is required, Wyrm is not compatible with Neat 2.0+.'
+    );
+    console.error(
+        'The expected selector for the bourbon-neat dependency in package.json is "~1.9".'
+    );
+    process.exit(1);
+}