Exclude platformdirs 4.5.1 in GHA win jobs

.github/workflows/test_branches.yml

@@ -376,9 +376,11 @@ jobs:
         echo "*** Install Pyomo dependencies ***"
         # For windows, cannot use newer setuptools because of APPSI compilation issues
         # There seems to be some specific problem with platformdirs 4.5.0
-        # on win 3.13/3.14 as of 2025-10-23
+        # on win 3.13/3.14 as of 2025-10-23 and platformdirs 4.5.1 on win/3.13
+        # as of 2025-12-12, pip 25.3 now packages the problematic platformdirs
+        # version so excluding that also.
         if test "${{matrix.TARGET}}" == 'win'; then
-            CONDA_DEPENDENCIES="$CONDA_DEPENDENCIES setuptools<74.0.0 platformdirs!=4.5.0"
+            CONDA_DEPENDENCIES="$CONDA_DEPENDENCIES setuptools<74.0.0 platformdirs!=4.5.0,!=4.5.1 pip<25.0"
         fi
         # Note: this will fail the build if any installation fails (or
         # possibly if it outputs messages to stderr)
@@ -453,6 +455,8 @@ jobs:
         echo ""
         echo "Installing packages only available on PyPI"
         if test -n "$PYPI_DEPENDENCIES"; then
+            python -c "import pip; print(pip.__version__, pip.__file__)"
+            python -c "import platformdirs; print(platformdirs.__version__, platformdirs.__file__)"
             python -m pip install --cache-dir cache/pip $PYPI_DEPENDENCIES
         fi
         # remember this python interpreter

.github/workflows/test_pr_and_main.yml

@@ -93,8 +93,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        # FIXME: pinning to 3.14.0 until 3.14.1 is removed from runner tool cache
-        python: [ '3.10', 3.11, 3.12, 3.13, 3.14.0 ]
+        python: [ '3.10', 3.11, 3.12, 3.13, 3.14 ]
         other: [""]
         category: [""]
 
@@ -369,6 +368,7 @@ jobs:
       if: matrix.PYENV == 'conda'
       run: |
         # Set up environment
+        python -c "import ctypes; print('CTYPES', ctypes.__file__)"
         conda config --set always_yes yes
         conda config --set auto_update_conda false
         conda config --set channel_priority strict
@@ -429,13 +429,18 @@ jobs:
         echo "*** Install Pyomo dependencies ***"
         # For windows, cannot use newer setuptools because of APPSI compilation issues
         # There seems to be some specific problem with platformdirs 4.5.0
-        # on win 3.13/3.14 as of 2025-10-23
+        # on win 3.13/3.14 as of 2025-10-23 and platformdirs 4.5.1 on win/3.13
+        # as of 2025-12-12. pip 25.3 now packages the problematic platformdirs
+        # version so excluding that also.
         if test "${{matrix.TARGET}}" == 'win'; then
-            CONDA_DEPENDENCIES="$CONDA_DEPENDENCIES setuptools<74.0.0 platformdirs!=4.5.0"
+            CONDA_DEPENDENCIES="$CONDA_DEPENDENCIES setuptools<74.0.0 platformdirs!=4.5.0,!=4.5.1"
         fi
         # Note: this will fail the build if any installation fails (or
         # possibly if it outputs messages to stderr)
-        conda install --update-deps -q -y python="${{matrix.python}}" $CONDA_DEPENDENCIES
+        # Note: remove '--update-deps' to prevent update that breaks ctypes
+        # Note: removed 'python="${{matrix.python}}"'... is it not necessary?
+        conda install -q -y --no-update-deps $CONDA_DEPENDENCIES
+        python -c "import ctypes; print('CTYPES', ctypes.__file__)"
         if test -z "${{matrix.slim}}"; then
             # xpress.init() (xpress 9.5.1 from conda) hangs indefinitely
             # on GHA/Windows under Python 3.10 and 3.11.  Exclude that
@@ -505,6 +510,8 @@ jobs:
         # Re-try Pyomo (optional) dependencies with pip
         echo ""
         echo "Installing packages only available on PyPI"
+        conda install -q -y --force-reinstall pip libffi python python_abi \
+            `conda list | grep -E 'zlib|^vc|^vs' | cut -d\  -f1`
         if test -n "$PYPI_DEPENDENCIES"; then
             python -m pip install --cache-dir cache/pip $PYPI_DEPENDENCIES
         fi

.github/workflows/typos.toml

@@ -65,6 +65,8 @@ MCH = "MCH"
 # Ignore RO
 ro = "ro"
 RO = "RO"
+# Ignore bimap
+bimap = "bimap"
 # Ignore EOF - end of file
 EOF = "EOF"
 # Ignore lst as shorthand for list

pyomo/contrib/piecewise/tests/test_nonlinear_to_pwl.py

@@ -602,7 +602,7 @@ def test_linear_model_tree_uniform(self):
             # pretty close to m.x, but we're a bit off because we don't have 0
             # as a breakpoint.
             0.9833360108369479 * m.x + 0.16663989163052034,
-            places=7,
+            places=6,
         )
 
     def test_linear_model_tree_random(self):
@@ -657,7 +657,7 @@ def test_linear_model_tree_random_auto_depth_tree(self):
             pwlf._simplices,
             [(0, 1), (1, 2), (2, 3), (3, 4), (4, 5), (5, 6), (6, 7), (7, 8)],
         )
-        self.assertEqual(
+        self.assertStructuredAlmostEqual(
             pwlf._points,
             [
                 (-10,),
@@ -670,6 +670,7 @@ def test_linear_model_tree_random_auto_depth_tree(self):
                 (2.15597,),
                 (10,),
             ],
+            places=4,
         )
         self.assertEqual(len(pwlf._linear_functions), 8)
         for i in range(3):
@@ -680,7 +681,7 @@ def test_linear_model_tree_random_auto_depth_tree(self):
             # pretty close to - m.x, but we're a bit off because we don't have 0
             # as a breakpoint.
             -0.9851979299618323 * m.x + 0.12006477080409184,
-            places=7,
+            places=6,
         )
         for i in range(4, 8):
             assertExpressionsEqual(self, pwlf._linear_functions[i](m.x), m.x)