diff --git a/spack.yaml b/spack.yaml
deleted file mode 100644
index 494e2c5ebaadfb005f5e750aa7c84787c709b1c8..0000000000000000000000000000000000000000
--- a/spack.yaml
+++ /dev/null
@@ -1,92 +0,0 @@
-spack:
-  view: false
-  concretization: separately
-
-  packages:
-    mpi:
-      # disable mpi lib builds altogether
-      buildable: false
-    mpich:
-      buildable: false
-      externals:
-      # centos7: mpich-3.0-3.0.4-10.el7.x86_64
-      # maybe add arch=linux-centos7-sandybridge later?
-      - spec: mpich@3.0.4
-        prefix: /usr/lib64/mpich
-
-  definitions:
-  - compiler-pkgs:
-    - gcc@10.3.0 os=centos7
-  - pkgs:
-    # some EBRAINS-related simulators
-    #- py-numpy ^python@3.8.10 
-    #- py-scipy ^python@3.8.10 
-    #- py-pip ^python@3.8.10 
-    #- nest +gsl +python ^python@3.8.10 %gcc@9.3.1
-    - arbor
-
-    #- nest +gsl +mpi ^py-scipy@:1.6.999
-    #- arbor +mpi
-    #- neuron +mpi
-    # BrainScaleS (plus some constraining)
-    #- visionary-dls-core ^py-setuptools-scm+toml ^python@3.8.0:3.8.999 ^binutils+ld ^py-astroid@2.5.6:2.6.999 ^py-scipy@:1.6.999
-  - compilers:
-    # for now build on one target compiler only
-    - '%gcc@10.3.0'
-  - oses:
-    - os=centos7
-
-  specs:
-  - matrix:
-    - [$pkgs]
-    - [$compilers]
-    - [$oses]
-
-  mirrors:
-    local_something: /builds/akarmas/ebrains-spack-builds/jobs_scratch_dir/mirror
-    # some random cache :p (build_cache/ gets added)
-    #hacky_cache: https://brainscales-r.kip.uni-heidelberg.de:7443/nmpi/tmp
-    ebrains_cache: https://object.cscs.ch/v1/AUTH_9c619ee75cab4993b1c4c86a37586357/test_spack/tc-tmp-cache
-    public_mirror: https://spack-llnl-mirror.s3-us-west-2.amazonaws.com/
-
-  gitlab-ci:
-    bootstrap:
-    - name: compiler-pkgs
-      compiler-agnostic: true
-
-    mappings:
-      - match:
-        - os=centos7
-        runner-attributes:
-          tags:
-            - docker-runner
-          image: docker-registry.ebrains.eu/clb-jupyter-image/base
-
-    # needed as the spack command isn't globally available
-    before_script:
-      - git clone ${SPACK_REPO}
-      # ${SPACK_REF} ?
-      - pushd spack && git checkout ${SPACK_CHECKOUT_VERSION} && git log -n 1 && popd
-      - . "./spack/share/spack/setup-env.sh"
-
-    # looks like default => remove it?
-    script:
-      - spack env activate --without-view ${SPACK_CONCRETE_ENV_DIR}
-      - spack -d ci rebuild
-
-    # all in artifacts (no shared filesystem...)
-    enable-artifacts-buildcache: True
-
-    # trigger service job below
-    rebuild-index: True
-
-    # post-build runner performing index (and potentially triggering deployment later)
-    service-job-attributes:
-      tags:
-        - docker-runner
-      image: docker-registry.ebrains.eu/clb-jupyter-image/base
-      before_script:
-        - git clone ${SPACK_REPO}
-        - pushd spack && git checkout ${SPACK_CHECKOUT_VERSION} && popd
-        - . "./spack/share/spack/setup-env.sh"
-