From c0b458e38a6b1403227d83966f3200869c18a5d4 Mon Sep 17 00:00:00 2001
From: Tamara Dahlgren <35777542+tldahlgren@users.noreply.github.com>
Date: Thu, 12 Jan 2023 11:01:35 -0800
Subject: Documentation: Add installation policy to packaging guide (#34878)

---
 lib/spack/docs/packaging_guide.rst | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'lib')

diff --git a/lib/spack/docs/packaging_guide.rst b/lib/spack/docs/packaging_guide.rst
index 27705b3dbf..45f1533e66 100644
--- a/lib/spack/docs/packaging_guide.rst
+++ b/lib/spack/docs/packaging_guide.rst
@@ -34,6 +34,15 @@ ubiquitous in the scientific software community. Second, it's a modern
 language and has many powerful features to help make package writing
 easy.
 
+.. warning::
+
+   As a general rule, packages should install the software *from source*.
+   The only exception is for proprietary software (e.g., vendor compilers).
+
+   If a special build system needs to be added in order to support building
+   a package from source, then the associated code and recipe need to be added
+   first.
+
 
 .. _installation_procedure:
 
-- 
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