matplotlib: replace 'python -m pip' with 'uv pip'

Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>

Author: threexc

.github/workflows/build-matplotlib.yml

@@ -50,7 +50,7 @@ jobs:
           https://github.com/qhull/qhull/raw/2020.2/COPYING.txt
 
       - name: Install dependencies
-        run: python -m pip install build twine
+        run: uv pip install build twine
 
       - name: Build sdist
         id: sdist

.github/workflows/test-matplotlib.yml

@@ -136,24 +136,24 @@ jobs:
         run: |
           # Upgrade pip and setuptools and wheel to get as clean an install as
           # possible.
-          python -m pip install --upgrade pip setuptools wheel
+          uv pip install --upgrade pip setuptools wheel
 
           # Install dependencies from PyPI.
           # Preinstall build requirements to enable no-build-isolation builds.
-          python -m pip install --upgrade --prefer-binary \
+          uv pip install --upgrade --prefer-binary \
             --group build --group test
 
           # Install optional dependencies from PyPI.
           # Sphinx is needed to run sphinxext tests
-          python -m pip install --upgrade sphinx!=6.1.2
+          uv pip install --upgrade sphinx!=6.1.2
 
           # GUI toolkits are pip-installable only for some versions of Python
           # so don't fail if we can't install them.  Make it easier to check
           # whether the install was successful by trying to import the toolkit
           # (sometimes, the install appears to be successful but shared
           # libraries cannot be loaded at runtime, so an actual import is a
           # better check).
-          python -m pip install --upgrade pycairo 'cairocffi>=0.8' 'PyGObject' &&
+          uv pip install --upgrade pycairo 'cairocffi>=0.8' 'PyGObject' &&
             (
               python -c 'import gi; gi.require_version("Gtk", "4.0"); from gi.repository import Gtk' &&
               echo 'PyGObject 4 is available' || echo 'PyGObject 4 is not available'
@@ -179,7 +179,7 @@ jobs:
 
           export CPPFLAGS='--coverage -fprofile-abs-path'
 
-          python -m pip install --no-deps --no-build-isolation --verbose \
+          uv pip install --no-deps --no-build-isolation --verbose \
             --config-settings=setup-args="-DrcParams-backend=Agg" \
             --editable .[dev]