diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 937ddc46e..5d489b8f2 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -5,6 +5,7 @@ on:
     branches:
       - master
       - release/*
+      - test-*
 defaults:
   run:
     shell: bash
@@ -109,159 +110,4 @@ jobs:
       - name: Test
         env:
           COVERAGE_ID: ${{ matrix.name }}
-        run: python -um devtools.gha.unittest
-      - name: Upload coverage artifact
-        uses: actions/upload-artifact@v4
-        with:
-          name: _coverage_${{ matrix.name }}
-          path: target/coverage/
-          if-no-files-found: error
-  process-coverage:
-    if: ${{ always() }}
-    needs: test
-    name: 'Test coverage'
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-      - name: Download coverage artifacts
-        uses: actions/download-artifact@v4
-        with:
-          pattern: _coverage_*
-          path: target/coverage
-          merge-multiple: true
-      - name: Generate summary
-        run: python -um devtools.gha.report_coverage
-      - name: Upload lcov artifact
-        uses: actions/upload-artifact@v4
-        with:
-          name: coverage
-          path: target/coverage/coverage.info
-      - name: Delete temporary coverage artifacts
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: python -um devtools.gha.delete_coverage_artifacts
-  test-examples:
-    needs: build-python-package
-    name: 'Test examples ${{ matrix.os }}'
-    runs-on: ${{ matrix.os }}-latest
-    strategy:
-      matrix:
-        os: [ubuntu, macos, windows]
-      fail-fast: false
-    env:
-      _wheel: ${{ needs.build-python-package.outputs.wheel }}
-      NUTILS_MATRIX: scipy
-      NUTILS_NPROCS: 1
-      NUTILS_DEBUG: all
-      OMP_NUM_THREADS: 1
-      VECLIB_MAXIMUM_THREADS: 1
-      PYTHONHASHSEED: 0
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-      - name: Move nutils directory
-        run: mv nutils _nutils
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: "3.12"
-      - name: Download Python package artifact
-        uses: actions/download-artifact@v4
-        with:
-          name: python-package
-          path: dist/
-      - name: Install Nutils and dependencies
-        id: install
-        run: |
-          python -um pip install --upgrade --upgrade-strategy eager wheel
-          # Install Nutils from `dist` dir created in job `build-python-package`.
-          python -um pip install "$_wheel[matrix_scipy,export_mpl]"
-      - name: Test
-        run: python -um unittest discover -b -q -t . -s examples
-  test-sphinx:
-    name: Test building docs
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: "3.12"
-      - name: Install dependencies
-        run: |
-          python -um pip install setuptools wheel
-          python -um pip install --upgrade --upgrade-strategy eager .[docs]
-      - name: Build docs
-        run: python -um sphinx -n -W --keep-going docs build/sphinx/html
-  build-and-test-container-image:
-    name: Build container image
-    needs: build-python-package
-    runs-on: ubuntu-latest
-    env:
-      # Fixes https://github.com/actions/virtual-environments/issues/3080
-      STORAGE_OPTS: overlay.mount_program=/usr/bin/fuse-overlayfs
-      _wheel: ${{ needs.build-python-package.outputs.wheel }}
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-      - name: Download Python package artifact
-        uses: actions/download-artifact@v4
-        with:
-          name: python-package
-          path: dist/
-      - name: Get base and image tags
-        id: tags
-        run: python3 -um devtools.gha.get_base_and_image_tags
-      - name: Pull container base image
-        env:
-          _base: ${{ env.official_container_repository }}:${{ steps.tags.outputs.base }}
-        run: podman pull "docker://$_base"
-      - name: Build container image
-        id: build
-        env:
-          _base: ${{ env.official_container_repository }}:${{ steps.tags.outputs.base }}
-          _name: ${{ env.official_container_repository }}:${{ steps.tags.outputs.image }}
-        run: python3 -um devtools.container.build --revision "$GITHUB_SHA" --wheel "$_wheel" --examples examples --name "$_name" --base "$_base"
-      - name: Test examples/laplace.py
-        env:
-          _image: ${{ steps.build.outputs.id }}
-        run: |
-          mkdir /tmp/log
-          podman run --pull=never --rm -v /tmp/log:/log:rw "$_image" laplace
-          if [ ! -e /tmp/log/log.html ]; then
-            echo ::error ::"log file not generated"
-            exit 1
-          fi
-      - name: Run unit tests
-        env:
-          _image: ${{ steps.build.outputs.id }}
-        run: podman run --pull=never --rm -v "$PWD/tests:/app/tests:ro" -v "$PWD/examples:/app/examples:ro" --env NUTILS_DEBUG=all "$_image" -m unittest -bq
-      - name: Push image to container registry
-        if: ${{ github.event_name == 'push' }}
-        env:
-          _username: ${{ secrets.DOCKER_USERNAME }}
-          _password: ${{ secrets.DOCKER_PASSWORD }}
-          _repository: ${{ secrets.DOCKER_REPOSITORY }}
-          _image_id: ${{ steps.build.outputs.id }}
-          _tag: ${{ steps.tags.outputs.image }}
-        run: |
-          # Push the image to the official container repository if this
-          # workflow is triggered from the official git repository, otherwise
-          # use the `DOCKER_REPOSITORY` secret.
-          case "$GITHUB_REPOSITORY" in
-            evalf/nutils)
-              _repository="$official_container_repository"
-              ;;
-            *)
-              if [ -z "$_repository" ]; then
-                echo ::error ::"Github secret DOCKER_REPOSITORY is empty"
-                exit 1
-              fi
-              ;;
-          esac
-          # Login without exposing the password via the command line as recommended by GitHub
-          # (https://docs.github.com/en/free-pro-team@latest/actions/reference/encrypted-secrets#using-encrypted-secrets-in-a-workflow).
-          printenv _password | podman login --username "$_username" --password-stdin "${_repository%%/*}"
-          podman push "$_image_id" "docker://$_repository:$_tag"
+        run: python -um unittest -v tests.test_gh_discussion_889
diff --git a/nutils/types.py b/nutils/types.py
index f69fb8d43..2ec5f7a23 100644
--- a/nutils/types.py
+++ b/nutils/types.py
@@ -388,6 +388,8 @@ def __new__(cls, arg):
         if isinstance(arg, cls):
             return arg
         array = numpy.asarray(arg)
+        if isinstance(arg, int) and arg > 2**30:
+            print(type(arg), arg, array.dtype)
         dtype = dict(b=bool, u=int, i=int, f=float, c=complex)[array.dtype.kind]
         return super().__new__(cls, dtype, array.shape, array.astype(dtype, copy=False).tobytes())
 
diff --git a/tests/test_gh_discussion_889.py b/tests/test_gh_discussion_889.py
new file mode 100644
index 000000000..5ef6987f2
--- /dev/null
+++ b/tests/test_gh_discussion_889.py
@@ -0,0 +1,41 @@
+import numpy
+from nutils import function, mesh
+from nutils.testing import TestCase
+
+class gh_discussion_889(TestCase):
+
+    def test_mul_f64(self):
+
+        domain, geom = mesh.rectilinear([numpy.linspace(0, 1, 2), numpy.linspace(0, 1, 2)])
+
+        x,y = geom
+        x = (x*1.02)-0.51
+        y = (y*1.02)-0.51
+
+        domain.trim(-x/2 + y*2.7755575615628914e-17, maxrefine=4)
+
+    def test_div_large_int(self):
+
+        domain, geom = mesh.rectilinear([numpy.linspace(0, 1, 2), numpy.linspace(0, 1, 2)])
+
+        x,y = geom
+        x = (x*1.02)-0.51
+        y = (y*1.02)-0.51
+
+        domain.trim(-x/2 + y/36028797018963968, maxrefine=4)
+
+    def test_numpy_array_large_number(self):
+        numpy.array(36028797018963968, dtype=int)
+
+    def test_array_cast_large_number(self):
+        function.Array.cast(36028797018963968)
+
+        #domain, geom = mesh.rectilinear([numpy.linspace(0, 1, 2), numpy.linspace(0, 1, 2)])
+
+        #x,y = geom
+        #x = (x*1.02)-0.51
+        #y = (y*1.02)-0.51
+
+        #f = y / 36028797018963968
+
+        #print(domain.sample('gauss', 0)(f).as_evaluable_array.asciitree())