Fix CI (breaking because of pdm and windows-2019) (#1679)

* Empty commit to get baseline for CI

* Do not use latest pdm to test install

* See if changing pdm version is fixing windows-2019

* Skipping windows-2019 in CI for now

Author: Hartorn

.github/workflows/build-python.yml

@@ -60,11 +60,11 @@ jobs:
         langchain_minimal: [false]
         # https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners#supported-runners-and-hardware-resources
         include:
-          - python-version: "3.10"
-            os: windows-2019
-            pydantic_v1: false
-            pandas_v1: false
-            langchain_minimal: false
+          # - python-version: "3.10" # Deactivating windows-2019, since it's trying to use python 3.7 to install PDM. Maybe try to reactivate later ?
+          #   os: windows-2019
+          #   pydantic_v1: false
+          #   pandas_v1: false
+          #   langchain_minimal: false
           - python-version: "3.10"
             os: windows-2022
             pydantic_v1: false
@@ -250,6 +250,7 @@ jobs:
         uses: pdm-project/setup-pdm@v3
         with:
           python-version: '3.10'
+          version: '2.10.4' # Fix to repair the CI, use latest version when fixed on pdm
           cache: false
       - name: Build wheel
         run: pdm build