install pip on windows, but via pacman

Author: harisont

.github/workflows/build-binary-packages.yml

@@ -194,9 +194,8 @@ jobs:
     - name: Install pip
       shell: msys2 {0}
       run: |
-        curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
-        python get-pip.py
-        rm get-pip.py
+        pacman -S python-pip
+        pip install --upgrade pip
 
     - name: Build Python bindings
       shell: msys2 {0}