See https://sourceforge.net/p/pam-python/tickets/5/

--- /tmp/pam-python-1.0.8/src/pam_python.c  2020-11-10 01:58:10.000000000 -0800

+++ pam-python-1.0.8/src/pam_python.c 2021-01-18 09:19:27.082023704 -0800

@@ -104,7 +104,7 @@

 #define	Py23_String_FromStringAndSize PyUnicode_FromStringAndSize

 #define	Py23_String_GET_SIZE	PyUnicode_GET_SIZE

 #define	Py23_String_Parse_Char	"U"

-#define	Py23_String_Size	PyUnicode_Size

+#define	Py23_String_Size	PyBytes_Size

 #define	Py23_String_Type	PyUnicode_Type

 #define	Py23_TYPE(p)		Py_TYPE(p)

 #endif

@@ -434,7 +434,7 @@

    * Just print the exception in some recognisable form, hopefully.

    */

   syslog_open(module_path);

-  if (PyClass_Check(ptype))

+  if (PyType_Check(ptype))

     stype = PyObject_GetAttrString(ptype, "__name__");

   else

   {

@@ -876,7 +876,7 @@

     value = 0;

   else

   {

-    value = Py23_String_AsString(pyValue);

+    value = (char*) Py23_String_AsString(pyValue);

     if (value == 0)

     {

       snprintf(

Only in /home/dan/chroot-cauldron/tmp/pam-python-1.0.8/src: pam_python.so

diff -ru /tmp/pam-python-1.0.8/src/setup.py /home/dan/chroot-cauldron/tmp/pam-python-1.0.8/src/setup.py

--- /tmp/pam-python-1.0.8/src/setup.py  2020-11-10 01:58:10.000000000 -0800

+++ pam-python-1.0.8/src/setup.py 2021-01-18 09:08:21.485867575 -0800

@@ -1,4 +1,4 @@

-#!/usr/bin/python2 -W default

+#!/usr/bin/python3 -W default

 import warnings; warnings.simplefilter('default')

 import distutils.sysconfig

Only in /home/dan/chroot-cauldron/tmp/pam-python-1.0.8/src: test-pam_python.pam

diff -ru /tmp/pam-python-1.0.8/src/test.py /home/dan/chroot-cauldron/tmp/pam-python-1.0.8/src/test.py

--- /tmp/pam-python-1.0.8/src/test.py   2020-11-10 01:58:10.000000000 -0800

+++ pam-python-1.0.8/src/test.py  2021-01-18 09:08:17.370729760 -0800

@@ -1,4 +1,4 @@

-#!/usr/bin/python2 -W default

+#!/usr/bin/python3 -W default

 #

 # This is the test script for libpython-pam.  There aren't many stones

 # left unturned.

diff --git a/pam_python/src/setup.py b/pam_python/src/setup.py

index 38fcddd..496ec6c 100755

--- pam_python/src/setup.py

+++ pam_python/src/setup.py

@@ -38,7 +38,7 @@ ext_modules = [

       include_dirs = [],

       library_dirs=[],

       define_macros=[('LIBPYTHON_SO','"'+libpython_so+'"')] + Py_DEBUG,

-      libraries=["pam","python%d.%d" % sys.version_info[:2]],

+      libraries=["pam","python%d" % sys.version_info[:1]],

     ), ]

 setup(