(fix): gpu ci uses max version from pyproject.toml (#1714)

* (fix): gpu ci uses max version from `pyproject.toml`

* (fix): add back comments

* (fix): install cargo

* (chore): `apt-get update`

* (fix): do extraction + package fetch in one step

* (fix): use cargo install action

* (fix): add to path and install via `apt-get`

* (Fix): try `/home/runnerx`

* (fix): try expporting cargo path ahead of time

* (fix): try something new

* (fix): try yq

* (fix): right, cant use python first

* (fix): sudo snap

* (fix): remove redirection

* (fix): multiple quotes

* (fix): use full args + capture group

* (fix): simplify regex a bit more

* (fix): remove `crate`

.github/workflows/test-gpu.yml

@@ -51,10 +51,20 @@ jobs:
       - name: Nvidia SMI sanity check
         run: nvidia-smi
 
+      - name: Install yq
+        run: |
+          sudo snap install yq
+
+      - name: Extract max Python version from classifiers
+        run: |
+          classifiers=$(yq .project.classifiers pyproject.toml -oy  | grep --only-matching --perl-regexp '(?<=Python :: )(\d\.\d+)')
+          max_version=$(echo "$classifiers" | sort -V | tail -1)
+          echo "max_python_version=$max_version" >> $GITHUB_ENV
+
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.x"
+          python-version: ${{ env.max_python_version }}
 
       - name: Install UV
         uses: hynek/setup-cached-uv@v2