Merge pull request #168113 from a-m-joseph/ispowerpc-becomes-ispower32

lib/systems/inspect.nix: replace isPowerPC with isPower32BigEndian

2 files changed, 19 insertions, 1 deletions

diff --git a/nixos/doc/manual/from_md/release-notes/rl-2211.section.xml b/nixos/doc/manual/from_md/release-notes/rl-2211.section.xml
index 79268b398e60f..908d1ab46e8f1 100644
--- a/nixos/doc/manual/from_md/release-notes/rl-2211.section.xml
+++ b/nixos/doc/manual/from_md/release-notes/rl-2211.section.xml
@@ -51,7 +51,7 @@
   </section>
   <section xml:id="sec-release-22.11-incompatibilities">
     <title>Backward Incompatibilities</title>
-    <itemizedlist spacing="compact">
+    <itemizedlist>
       <listitem>
         <para>
           The <literal>isCompatible</literal> predicate checking CPU
@@ -69,6 +69,21 @@
           compatible</emphasis>.
         </para>
       </listitem>
+      <listitem>
+        <para>
+          The <literal>isPowerPC</literal> predicate, found on
+          <literal>platform</literal> attrsets
+          (<literal>hostPlatform</literal>,
+          <literal>buildPlatform</literal>,
+          <literal>targetPlatform</literal>, etc) has been removed in
+          order to reduce confusion. The predicate was was defined such
+          that it matches only the 32-bit big-endian members of the
+          POWER/PowerPC family, despite having a name which would imply
+          a broader set of systems. If you were using this predicate,
+          you can replace <literal>foo.isPowerPC</literal> with
+          <literal>(with foo; isPower &amp;&amp; is32bit &amp;&amp; isBigEndian)</literal>.
+        </para>
+      </listitem>
     </itemizedlist>
   </section>
   <section xml:id="sec-release-22.11-notable-changes">
diff --git a/nixos/doc/manual/release-notes/rl-2211.section.md b/nixos/doc/manual/release-notes/rl-2211.section.md
index 7d2eacce57fed..87fdf4e77f250 100644
--- a/nixos/doc/manual/release-notes/rl-2211.section.md
+++ b/nixos/doc/manual/release-notes/rl-2211.section.md
@@ -37,6 +37,9 @@ In addition to numerous new and upgraded packages, this release has the followin
   `lib.systems.parse.isCompatible` still exists, but has changed semantically:
   Architectures with differing endianness modes are *no longer considered compatible*.
 
+- The `isPowerPC` predicate, found on `platform` attrsets (`hostPlatform`, `buildPlatform`, `targetPlatform`, etc) has been removed in order to reduce confusion.  The predicate was was defined such that it matches only the 32-bit big-endian members of the POWER/PowerPC family, despite having a name which would imply a broader set of systems.  If you were using this predicate, you can replace `foo.isPowerPC` with `(with foo; isPower && is32bit && isBigEndian)`.
+
+
 <!-- To avoid merge conflicts, consider adding your item at an arbitrary place in the list instead. -->
 
 ## Other Notable Changes {#sec-release-22.11-notable-changes}