diff --git a/env/merlin/spack.yaml b/env/merlin/spack.yaml
index f7c3bd5..4d8638e 100644
--- a/env/merlin/spack.yaml
+++ b/env/merlin/spack.yaml
@@ -11,6 +11,8 @@ spack:
   definitions:
     - compilers:
         - '%gcc@12.1.0'
+    - Batchsystem_pckgs: &Batchsystem_pckgs
+        - slurm
     - Compilers_pckgs: &Compilers_pckgs
         - atlas
         - boost
@@ -156,6 +158,29 @@ spack:
     - sysconfigs/packages.yaml
 #>>> modules.yaml
   modules:
+    Batchsystem:
+      use_view: Batchsystem
+      arch_folder: false
+      enable:
+      - tcl
+      roots:
+        tcl: /afs/psi.ch/sys/spack-rhel7/Batchsystem
+      tcl:
+        blacklist_implicits: true
+        include: *Batchsystem_pckgs
+        all:
+          autoload: direct
+          conflict:
+            - '{name}'
+          environment:
+            set:
+              ${PACKAGE}_INCLUDE_DIR: '{prefix}/include'
+              ${PACKAGE}_LIBRARY_DIR: '{prefix}/lib'
+              ${PACKAGE}_VERSION: '{version}'
+        projections: &unified_modules_projections
+          all: modulefiles/{compiler.name}/{compiler.version}/{name}/{version}
+          ^mpi: 'modulefiles/{compiler.name}/{compiler.version}/{name}/{version}/{^mpi.name}/{^mpi.version}'
+          ~mpi: 'modulefiles/{compiler.name}/{compiler.version}/{name}_serial/{version}'
     Compilers:
       use_view: Compilers
       arch_folder: false
@@ -175,10 +200,7 @@ spack:
               ${PACKAGE}_INCLUDE_DIR: '{prefix}/include'
               ${PACKAGE}_LIBRARY_DIR: '{prefix}/lib'
               ${PACKAGE}_VERSION: '{version}'
-        projections: &unified_modules_projections
-          all: modulefiles/{compiler.name}/{compiler.version}/{name}/{version}
-          ^mpi: 'modulefiles/{compiler.name}/{compiler.version}/{name}/{version}/{^mpi.name}/{^mpi.version}'
-          ~mpi: 'modulefiles/{compiler.name}/{compiler.version}/{name}_serial/{version}'
+        projections: *unified_modules_projections
     Cuda:
       use_view: Cuda
       arch_folder: false
@@ -413,13 +435,19 @@ spack:
         - - $Compilers_pckgs
         - - $compilers
   view:
-    Compilers:
+    Batchsystem:
       link: roots
       link_type: symlink
       projections: &unified_projections
         ^mpi: '{name}/{version}/{^mpi.name}/{^mpi.version}/{compiler.name}/{compiler.version}'
         all: '{name}/{version}/{compiler.name}/{compiler.version}'
         ~mpi: '{name}_serial/{version}/{compiler.name}/{compiler.version}'
+      root: /afs/psi.ch/sys/spack-rhel7/Batchsystem
+      select: *Batchsystem_pckgs
+    Compilers:
+      link: roots
+      link_type: symlink
+      projections: *unified_projections
       root: /afs/psi.ch/sys/spack-rhel7/Compilers
       select: *Compilers_pckgs
     Cuda: