update changelog for adding haiku support

jessicah · ulysses4ever · commit 315b080e6b74 · 2023-06-14T20:53:42.000Z
diff --git a/changelog.d/pr-9006 b/changelog.d/pr-9006
@@ -0,0 +1,10 @@
+synopsis: Add Haiku as a known platform
+packages: Cabal
+prs: #9006
+
+description: {
+
+- Cabal: Distribution now recognises Haiku as a valid platform,
+  and also implements Haiku's unique directory layout.
+
+}
