Fix CI failures

.github/workflows/native-builds.yaml

@@ -11,6 +11,7 @@ concurrency:
 jobs:
   pixi:
     strategy:
+      fail-fast: false
       matrix:
         platform:
           - ubuntu-latest
@@ -28,6 +29,11 @@ jobs:
     - name: Install environment
       run: pixi install --locked
     - name: Build SuperBuild
+      # The SuperBuild nests ninja inside ninja. Uncapped, each level runs
+      # cores+2 jobs and ~30 compilers exhaust the 16 GB runner. cmake
+      # --build honours this at both levels, so 3 bounds the total at 9.
+      env:
+        CMAKE_BUILD_PARALLEL_LEVEL: 3
       run: pixi run build
     - name: Test
       run: pixi run test

.github/workflows/publish-windows.yml

@@ -35,6 +35,7 @@ jobs:
       with:
         pixi-version: latest
         locked: true
+        cache: false
         # The build env (gpu) and the shipped runtime env (gpu-prod) are both needed.
         environments: >-
           gpu