diff --git a/site-config/ebrainslab/spack.yaml b/site-config/ebrainslab/spack.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..ce36e8bbbe52a8bf9fab41b283972e2415b0cdc9
--- /dev/null
+++ b/site-config/ebrainslab/spack.yaml
@@ -0,0 +1,13 @@
+spack:
+  specs:
+    # Notebook
+    - py-ipycanvas
+    - py-ipykernel
+    - py-ipython
+    - py-notebook
+    - r-irkernel
+    # "collab"-specific constraint to match ("jupyterlab_widgets") in the base image
+    - py-ipywidgets@:7.7
+    # Collab utils
+    - clb-nb-utils@0.1.0
+
diff --git a/spack.yaml b/spack.yaml
index ef408623eb624236582cf8759213a62449466400..8a0ada0e0bf074f01e7e1abf7e9c982b616cf09c 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -2,16 +2,6 @@ spack:
   include:
     - site-config/$SYSTEMNAME
   specs:
-    # Notebook
-    - py-ipycanvas
-    - py-ipykernel
-    - py-ipython
-    - py-notebook
-    - r-irkernel
-    # "collab"-specific constraint to match ("jupyterlab_widgets") in the base image
-    - py-ipywidgets@:7.7
-    # Collab utils
-    - clb-nb-utils@0.1.0
     # EBRAINS tools
     - apbs@3.4.0
     - arbor@0.8.1 +python +mpi