chore: use sanctioned pixi installer

Author: cpcloud

.github/workflows/conda-python-tests.yaml

@@ -119,10 +119,10 @@ jobs:
           set -euo pipefail
           PIXI_ENV="cu-$(cut -d. -f1-2 <<< "${{ matrix.CUDA_VER }}" | tr . -)"
           echo "PIXI_ENV=${PIXI_ENV}" >> "${GITHUB_ENV}"
-      # - name: Setup pixi
-      #   uses: prefix-dev/setup-pixi@v0.9.2
-      #   with:
-      #     environments: ${{ env.PIXI_ENV }}
+      - name: Setup pixi
+        uses: prefix-dev/setup-pixi@fef5c9568ca6c4ff7707bf840ab0692ba3f08293
+        with:
+          environments: ${{ env.PIXI_ENV }}
       - name: Python tests
         run: ${{ inputs.script }}
         env:

ci/test_conda.sh

@@ -12,10 +12,6 @@ if [ "$DISTRO" = "ubuntu" ]; then
   apt remove --purge `dpkg --get-selections | grep cuda-nvrtc | awk '{print $1}'` -y
 fi
 
-curl -fsSL https://pixi.sh/install.sh | sh
-
-export PATH="${PATH}:/github/home/.pixi/bin"
-
 # Constrain oldest supported dependencies for testing
 if [ "${RAPIDS_DEPENDENCIES:-}" = "oldest" ]; then
     # add to the default environment's dependencies