gnu: python-wxpython: Apply patch to fix TypeError exceptions.

This is caused by Python 3.10's new behavior of native extension now rejecting
float values as input when the expected type is an integer.

* gnu/packages/patches/python-wxwidgets-type-errors.patch: New patch.
* gnu/local.mk (dist_patch_DATA): Register it.
* gnu/packages/wxwidgets.scm (python-wxpython) [source]: Apply it.  Delete
trailing #t.
[arguments]: Delete trailing #t.

2 files changed, 45 insertions, 4 deletions

diff --git a/gnu/packages/patches/python-wxwidgets-type-errors.patch b/gnu/packages/patches/python-wxwidgets-type-errors.patch
new file mode 100644
index 0000000000..53e48c0886
--- /dev/null
+++ b/gnu/packages/patches/python-wxwidgets-type-errors.patch
@@ -0,0 +1,42 @@
+Merged upstream but not yet released (see:
+https://github.com/wxWidgets/Phoenix/pull/2387/commits/5d9f7aa185cd18da3e93ae1d0033fb9172d7a714).
+
+From 5d9f7aa185cd18da3e93ae1d0033fb9172d7a714 Mon Sep 17 00:00:00 2001
+From: Maxim Cournoyer <maxim.cournoyer@gmail.com>
+Date: Mon, 1 May 2023 13:53:55 -0400
+Subject: [PATCH] agw: Fix TypeError caused by floats with Python 3.10
+ extensions.
+
+This fixes the following error:
+
+   File "/lib/python3.10/site-packages/wx/lib/agw/pygauge.py", line 380, in OnPaint
+       dc.DrawText(drawString, textXPos, textYPos)
+   TypeError: DC.DrawText(): arguments did not match any overloaded call:
+     overload 1: argument 2 has unexpected type 'float'
+     overload 2: argument 2 has unexpected type 'float'
+   TimeLeft: 3.0
+
+Visible when using Python 3.10 or newer.
+---
+ wx/lib/agw/pygauge.py | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/wx/lib/agw/pygauge.py b/wx/lib/agw/pygauge.py
+index b8654436a..da42e6f61 100644
+--- a/wx/lib/agw/pygauge.py
++++ b/wx/lib/agw/pygauge.py
+@@ -367,12 +367,12 @@ def OnPaint(self, event):
+             drawString = self._drawIndicatorText_formatString.format(drawValue)
+             rect = self.GetClientRect()
+             (textWidth, textHeight, descent, extraLeading) = dc.GetFullTextExtent(drawString)
+-            textYPos = (rect.height-textHeight)/2
++            textYPos = (rect.height-textHeight)//2
+ 
+             if textHeight > rect.height:
+                 textYPos = 0-descent+extraLeading
+ 
+-            textXPos = (rect.width-textWidth)/2
++            textXPos = (rect.width-textWidth)//2
+ 
+             if textWidth>rect.width:
+                 textXPos = 0
diff --git a/gnu/packages/wxwidgets.scm b/gnu/packages/wxwidgets.scm
index b226aa4e83..5415f47f55 100644
--- a/gnu/packages/wxwidgets.scm
+++ b/gnu/packages/wxwidgets.scm
@@ -276,8 +276,8 @@ and many other languages.")
        (snippet
         '(begin
            ;; Remove bundled wxwidgets
-           (delete-file-recursively "ext/wxWidgets")
-           #t))))
+           (delete-file-recursively "ext/wxWidgets")))
+       (patches (search-patches "python-wxwidgets-type-errors.patch"))))
     (build-system python-build-system)
     (arguments
      `(#:phases
@@ -300,8 +300,7 @@ and many other languages.")
              (chmod "demo/version.py" #o644)
              ;; Build only the python bindings, not wxwidgets also.
              (substitute* "setup.py"
-               (("'build']") "'build_py', '--use_syswx']"))
-             #t)))))
+               (("'build']") "'build_py', '--use_syswx']")))))))
     (inputs
      (list gtk+ wxwidgets))
     (native-inputs