Manually invoke python3 on windows-64-vs2015 (#1319)

Author: eramongodb

.evergreen/config_generator/components/compile_only.py

@@ -70,7 +70,10 @@ def generate_tasks():
                     commands=[
                         Setup.call(),
                         FetchCDriverSource.call(),
-                        InstallUV.call(),
+                    ] + (
+                        # DEVPROD-13875 + astral-sh/uv/issues/10231.
+                        [] if "vs2015" in distro_name else [InstallUV.call()]
+                    ) + [
                         Compile.call(
                             build_type=build_type,
                             compiler=compiler,

.evergreen/generated_configs/tasks.yml

@@ -238,7 +238,6 @@ tasks:
     commands:
       - func: setup
       - func: fetch_c_driver_source
-      - func: install-uv
       - func: compile
         vars:
           build_type: Debug
@@ -250,7 +249,6 @@ tasks:
     commands:
       - func: setup
       - func: fetch_c_driver_source
-      - func: install-uv
       - func: compile
         vars:
           build_type: Release

.evergreen/scripts/compile.sh

@@ -14,7 +14,6 @@ set -o pipefail
 : "${branch_name:?}"
 : "${build_type:?}"
 : "${distro_id:?}" # Required by find-cmake-latest.sh.
-: "${UV_INSTALL_DIR:?}"
 
 : "${BSON_EXTRA_ALIGNMENT:-}"
 : "${BSONCXX_POLYFILL:-}"
@@ -28,6 +27,7 @@ set -o pipefail
 : "${USE_SANITIZER_ASAN:-}"
 : "${USE_SANITIZER_UBSAN:-}"
 : "${USE_STATIC_LIBS:-}"
+: "${UV_INSTALL_DIR:-}" # Not on windows-64-vs2015.
 
 mongoc_prefix="$(pwd)/../mongoc"
 echo "mongoc_prefix=${mongoc_prefix:?}"
@@ -82,7 +82,14 @@ darwin* | linux*)
 esac
 
 # Create a VERSION_CURRENT file in the build directory to include in the dist tarball.
-PATH="${UV_INSTALL_DIR:?}:${PATH:-}" uv run --frozen python ./etc/calc_release_version.py >./build/VERSION_CURRENT
+if [[ "${distro_id:?}" == windows-64-vs2015* ]]; then
+  # DEVPROD-13875: Python 3.9 and newer is not available on this distro.
+  # astral-sh/uv/issues/10231: Astral UV is not able to run properly on this OS+platform either.
+  # Manually use the Python 3.8 binary instead.
+  PATH="C:/python/Python38:${PATH:-}" python.exe ./etc/calc_release_version.py >./build/VERSION_CURRENT
+else
+  PATH="${UV_INSTALL_DIR:?}:${PATH:-}" uv run --frozen python ./etc/calc_release_version.py >./build/VERSION_CURRENT
+fi
 cd build
 
 cmake_flags=(