Fix website and snap Nix workflow wiring

Co-authored-by: dichhead <330471626+dichhead@users.noreply.github.com>

.github/workflows/pages.yml

@@ -99,7 +99,13 @@ jobs:
           path: website
 
       - name: Validate website
-        run: nix develop --command python3 "$GITHUB_WORKSPACE/website/scripts/test_site.py"
+        run: |
+          SCRIPT=$(cat <<'EOF'
+          cd "$GITHUB_WORKSPACE/website"
+          python3 scripts/test_site.py
+          EOF
+          )
+          nix develop --command bash --noprofile --norc -euo pipefail -c "$SCRIPT"
 
       - name: Assemble landing page
         run: |

.github/workflows/release.yml

@@ -156,9 +156,10 @@ jobs:
 
       - name: Set package version
         id: package
+        env:
+          VERSION: ${{ steps.version.outputs.version }}
         run: |
           SCRIPT=$(cat <<'EOF'
-          VERSION=$(python3 scripts/release.py versions --tag "$RELEASE_TAG" | sed -n 's/^version=//p')
           test -n "$VERSION"
           sed -i "s/^version: .*/version: '$VERSION'/" snap/snapcraft.yaml
           echo "version=$VERSION" >> "$GITHUB_OUTPUT"