Bug#1034443: python3-brial: uninstallable on arcitectures where sagemath is unavailable

[plugwash]

> Hell All, I have just made singular independent from brial
Thanks for dealing with that part of the issue.
> Otherwise it must be keep in mind that Sage is mostly umbrella software.
> That means that the dependency of brian on sage material is odd.
odd as it may be, it seems the dependency of python3-brial
on sagemath is real.

I've prepared a NMU, and intend to open a pre-approval
request with the release team. If you have any objections
to the NMU please tell me ASAP (I do not intend to upload
it until I receive a response from the release team, if you
would preffer to make the upload yourself that is fine too).
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diff -Nru brial-1.2.11/debian/changelog brial-1.2.11/debian/changelog
--- brial-1.2.11/debian/changelog	2023-04-03 12:13:10.000000000 +0000
+++ brial-1.2.11/debian/changelog	2023-05-02 10:39:34.000000000 +0000
@@ -1,3 +1,11 @@
+brial (1.2.11-2.1) bookworm-staging; urgency=medium
+
+  * Non-Maintainer upload.
+  * Limit architectures for python3-brial package  to architectures where
+    sagemath is available (Closes: #1034443).
+
+ -- Peter Michael Green <plugwash at raspbian.org>  Tue, 02 May 2023 10:39:34 +0000
+
 brial (1.2.11-2) unstable; urgency=medium
 
   * Team upload.
diff -Nru brial-1.2.11/debian/control brial-1.2.11/debian/control
--- brial-1.2.11/debian/control	2023-04-03 12:11:20.000000000 +0000
+++ brial-1.2.11/debian/control	2023-04-08 15:18:38.000000000 +0000
@@ -22,7 +22,7 @@
 Homepage: https://github.com/BRiAl
 
 Package: python3-brial
-Architecture: any
+Architecture: amd64 arm64 i386 riscv64
 Section: python
 Depends: python3-sage,
          ${misc:Depends},