[libvirt] [PATCH] docs: document that C & Python are the preferred languages

[Daniel P. Berrangé]

Blacklist Perl and Shell code in favour of Python for
sake of readability and portability.

Signed-off-by: Daniel P. Berrangé <berrange at redhat.com>
---
 docs/hacking.html.in | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/docs/hacking.html.in b/docs/hacking.html.in
index 90376968c3..8572eb65a6 100644
--- a/docs/hacking.html.in
+++ b/docs/hacking.html.in
@@ -343,6 +343,36 @@
         Richard Jones' guide to working with open source projects</a>.
     </p>
 
+    <h2><a id="lang">Language Usage</a></h2>
+
+    <p>
+      The libvirt repository makes use of a large number of programming
+      languages. There is a general desire to phase out some of the
+      existing languages used to reduce the knowledge burden on
+      developers, and facilitate introduction of new languages in
+      the future.
+    </p>
+
+    <p>
+      The preferred languages at this time are
+    </p>
+
+    <ul>
+      <li>C - for the main libvirt codebase. Dialect supported by
+        GCC/CLang only.</li>
+      <li>Python - for supporting build scripts / tools. Code must
+        run with both version 2.7 and 3.x at this time.</li>
+    </ul>
+
+    <p>
+      Languages that should not be used for any new contributions.
+    </p>
+
+    <ul>
+      <li>Perl - build scripts must be written in Python instead.</li>
+      <li>Shell - build scripts must be written in Python instead.</li>
+    </ul>
+
     <h2><a id="tooling">Tooling</a></h2>
 
     <p>
-- 
2.21.0