Adapt %py(3)_shebang_fix to use versioned pathfixX.Y.py

Versioned pathfixX.Y.py is available in main as well as in
alternative Pythons so this change enables to build
an alternative Python stack without a dependency on the main
python3-devel.

macros.python

@@ -10,7 +10,14 @@
 %py_shbang_opts -s
 %py_shbang_opts_nodash %(opts=%{py_shbang_opts}; echo ${opts#-})
 %py_shebang_flags %(opts=%{py_shbang_opts}; echo ${opts#-})
-%py_shebang_fix %{expand:/usr/bin/pathfix.py -pni %{__python} -k%{?py_shebang_flags:a %py_shebang_flags}}
+%py_shebang_fix %{expand:\\\
+  if [ -f /usr/bin/pathfix%{python_version}.py ]; then
+    pathfix=/usr/bin/pathfix%{python_version}.py
+  else
+    # older versions of Python don't have it and must BR /usr/bin/pathfix.py from python3-devel explicitly
+    pathfix=/usr/bin/pathfix.py
+  fi
+  $pathfix -pni %{__python} -k%{?py_shebang_flags:a %py_shebang_flags}}
 
 # Use the slashes after expand so that the command starts on the same line as
 # the macro

macros.python3

@@ -8,7 +8,14 @@
 %py3_shbang_opts -s
 %py3_shbang_opts_nodash %(opts=%{py3_shbang_opts}; echo ${opts#-})
 %py3_shebang_flags %(opts=%{py3_shbang_opts}; echo ${opts#-})
-%py3_shebang_fix %{expand:/usr/bin/pathfix.py -pni %{__python3} -k%{?py3_shebang_flags:a %py3_shebang_flags}}
+%py3_shebang_fix %{expand:\\\
+  if [ -f /usr/bin/pathfix%{python3_version}.py ]; then
+    pathfix=/usr/bin/pathfix%{python3_version}.py
+  else
+    # older versions of Python don't have it and must BR /usr/bin/pathfix.py from python3-devel explicitly
+    pathfix=/usr/bin/pathfix.py
+  fi
+  $pathfix -pni %{__python3} -k%{?py3_shebang_flags:a %py3_shebang_flags}}
 
 # Use the slashes after expand so that the command starts on the same line as
 # the macro

python-rpm-macros.spec

@@ -1,6 +1,6 @@
 Name:           python-rpm-macros
 Version:        3.9
-Release:        8%{?dist}
+Release:        9%{?dist}
 Summary:        The common Python RPM macros
 
 # macros and lua: MIT, compileall2.py: PSFv2
@@ -107,6 +107,9 @@ install -m 644 compileall2.py %{buildroot}%{_rpmconfigdir}/redhat/
 
 
 %changelog
+* Fri Jul 24 2020 Lumír Balhar <lbalhar@redhat.com> - 3.9-9
+- Adapt %%py[3]_shebang_fix to use versioned pathfixX.Y.py
+
 * Fri Jul 24 2020 Lumír Balhar <lbalhar@redhat.com> - 3.9-8
 - Disable Python hash seed randomization in %%py_byte_compile
 

tests/test_evals.py

@@ -228,23 +228,23 @@ def test_pypi_source_explicit_tilde():
 
 
 def test_py3_shebang_fix():
-    cmd = rpm_eval('%py3_shebang_fix arg1 arg2 arg3')[0]
-    assert cmd == '/usr/bin/pathfix.py -pni /usr/bin/python3 -ka s arg1 arg2 arg3'
+    cmd = rpm_eval('%py3_shebang_fix arg1 arg2 arg3')[-1].strip()
+    assert cmd == '$pathfix -pni /usr/bin/python3 -ka s arg1 arg2 arg3'
 
 
 def test_py3_shebang_fix_custom_flags():
-    cmd = rpm_eval('%py3_shebang_fix arg1 arg2 arg3', py3_shebang_flags='Es')[0]
-    assert cmd == '/usr/bin/pathfix.py -pni /usr/bin/python3 -ka Es arg1 arg2 arg3'
+    cmd = rpm_eval('%py3_shebang_fix arg1 arg2 arg3', py3_shebang_flags='Es')[-1].strip()
+    assert cmd == '$pathfix -pni /usr/bin/python3 -ka Es arg1 arg2 arg3'
 
 
 def test_py3_shebang_fix_empty_flags():
-    cmd = rpm_eval('%py3_shebang_fix arg1 arg2 arg3', py3_shebang_flags=None)[0]
-    assert cmd == '/usr/bin/pathfix.py -pni /usr/bin/python3 -k arg1 arg2 arg3'
+    cmd = rpm_eval('%py3_shebang_fix arg1 arg2 arg3', py3_shebang_flags=None)[-1].strip()
+    assert cmd == '$pathfix -pni /usr/bin/python3 -k arg1 arg2 arg3'
 
 
 def test_py_shebang_fix_custom():
-    cmd = rpm_eval('%py_shebang_fix arg1 arg2 arg3', __python='/usr/bin/pypy')[0]
-    assert cmd == '/usr/bin/pathfix.py -pni /usr/bin/pypy -ka s arg1 arg2 arg3'
+    cmd = rpm_eval('%py_shebang_fix arg1 arg2 arg3', __python='/usr/bin/pypy')[-1].strip()
+    assert cmd == '$pathfix -pni /usr/bin/pypy -ka s arg1 arg2 arg3'
 
 
 def test_pycached_in_sitelib():