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-rw-r--r--general-concepts/ebuild-revisions/text.xml14
1 files changed, 14 insertions, 0 deletions
diff --git a/general-concepts/ebuild-revisions/text.xml b/general-concepts/ebuild-revisions/text.xml
index f2d7234..b0c0d97 100644
--- a/general-concepts/ebuild-revisions/text.xml
+++ b/general-concepts/ebuild-revisions/text.xml
@@ -13,6 +13,20 @@ An ebuild with no explicit revision number has the implicit <c>-r0</c>
revision.
</p>
+<p>Ebuild revisions usually serve two purposes:</p>
+<ol>
+ <li>
+ keeping an older copy of an ebuild around when doing a potentially
+ breaking change, and
+ </li>
+
+ <li>
+ propagating the rebuild of a package when performing a meaningful
+ change that would otherwise go unnoticed by users who have installed
+ the current version already.
+ </li>
+</ol>
+
<p>
Ebuilds should have their <c>-rX</c> incremented whenever a change is made which
will make a substantial difference to what gets installed by the package <d/> by