Add dace backend to default CI pipeline

.github/workflows/icon4py-test-model.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         python-version: ["3.10", "3.11"]
-        backend: ["embedded", "gtfn_cpu"]         # TODO add dace-cpu?
+        backend: ["embedded", "dace_cpu", "gtfn_cpu"]
         component: ["advection", "diffusion", "dycore", "microphysics", "muphys", "driver", "common"]
     steps:
       - name: Checkout

ci/default.yml

@@ -37,9 +37,11 @@ test_tools_datatests_aarch64:
   variables:
     SLURM_TIMELIMIT: '00:30:00'
   script:
-    - nox -s "test_model-3.10(datatest, $COMPONENT)" -- --backend=$BACKEND --level=$LEVEL
+    - nox -s "test_model-3.10(datatest, $COMPONENT)" -- --backend=$BACKEND --level=integration
   rules:
-    - if: $COMPONENT == 'common' && $BACKEND == 'gtfn_gpu' && $LEVEL == 'integration'
+    - if: $BACKEND == 'dace_gpu' && $COMPONENT != 'diffusion' && $COMPONENT != 'dycore'
+      when: never  # run only in daily CI, to save compute resources
+    - if: $COMPONENT == 'common' && $BACKEND == 'gtfn_gpu'
       variables:
         SLURM_TIMELIMIT: '01:30:00'
     - if: $BACKEND == 'embedded'
@@ -49,8 +51,7 @@ test_tools_datatests_aarch64:
   parallel:
     matrix:
       - COMPONENT: [advection, diffusion, dycore, microphysics, common, driver]
-        BACKEND: [embedded, gtfn_cpu, gtfn_gpu]
-        LEVEL: [integration]
+        BACKEND: [embedded, dace_gpu, gtfn_cpu, gtfn_gpu]
 # test_model_datatests_x86_64:
 #   extends: [.test_model_datatests, .test_template_x86_64]
 test_model_datatests_aarch64:

pyproject.toml

@@ -265,7 +265,7 @@ url = "https://test.pypi.org/simple/"
 
 [tool.uv.sources]
 # ghex = {git = "https://github.com/ghex-org/GHEX.git", branch = "master"}
-# gt4py = {git = "https://github.com/GridTools/gt4py", branch = "main"}
+gt4py = {git = "https://github.com/edopao/gt4py", branch = "fix_let_lambda_with_origin"}
 dace = {git = "https://github.com/GridTools/dace", tag = "__gt4py-next-integration_2025_07_29"}
 icon4py-atmosphere-advection = {workspace = true}
 icon4py-atmosphere-diffusion = {workspace = true}