diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6cf7b45936e84755b490240277047c266b043334..d2fa0f63ff1432c9217243441bc63c026de48189 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -8,14 +8,19 @@ variables:
   EICD_VERSION: "v2.0.0"
   AFTERBURNER_VERSION: "v0.1.2"
 
-  ## Spack github version, v0.18.1
-  SPACK_VERSION: "13e6f87ef6527954b152eaea303841978e83b992"
+  ## Spack github version, e.g. v0.18.1 or commit hash
+  SPACK_VERSION: "v0.18.1"
   ## Space-separated list of spack cherry-picks
   SPACK_CHERRYPICKS: "adc9f887eac78a81bb8189d603f4dc45ed3509c1 5bd44a795c76a61f0f9fbfeedcf7e917a0bf40b0"
   ## Ref: https://github.com/spack/spack/commit/[hash]
   ## adc9f887eac78a81bb8189d603f4dc45ed3509c1: acts-dd4hep: new package; acts: new version
   ## 5bd44a795c76a61f0f9fbfeedcf7e917a0bf40b0: lcio, podio, edm4hep: add latest versions
 
+  ## Spack github version, e.g. v0.18 or commit hash
+  EICSPACK_VERSION: "d7606f67a36708dcc0c045a269621f4189345aad"
+  ## Space-separated list of eic=spack cherry-picks
+  EICSPACK_CHERRYPICKS: "" 
+
   ## We need to enable Docker Buildkit to use cache mounts and better
   ## build performance overall
   DOCKER_BUILDKIT: 1
@@ -232,11 +237,10 @@ oneapi_jug_dev:default:
     ## calculate a hash based on the spack.yaml file and the spack directory
     ## and use this spack as a docker variable to force a rebuild when there
     ## is a change (versus rerun from cache)
-    - PACKAGE_HASH=$(tar cf - spack* | sha1sum | head -c40)
+    - PACKAGE_HASH=$(sha1sum spack.yaml | head -c40)
     - echo "PACKAGE_HASH= ${PACKAGE_HASH}"
-    ## Copy spack directory and spack.yaml into build context
-    - cp -r spack containers/oneapi/
-    - cp spack.yaml containers/oneapi/spack/spack.yaml
+    ## Copy spack.yaml into build context
+    - cp spack.yaml containers/oneapi/spack.yaml
     - CACHE_FLAG=""
     - |
       if [ $FORCE_NOCACHE = 1 ]; then
@@ -249,6 +253,8 @@ oneapi_jug_dev:default:
                    -f containers/oneapi/onedev.Dockerfile
                    --build-arg SPACK_VERSION="${SPACK_VERSION}"
                    --build-arg SPACK_CHERRYPICKS="${SPACK_CHERRYPICKS}"
+                   --build-arg EICSPACK_VERSION="${EICSPACK_VERSION}"
+                   --build-arg EICSPACK_CHERRYPICKS="${EICSPACK_CHERRYPICKS}"
                    --build-arg CACHE_BUST=${PACKAGE_HASH}
                    --build-arg INTERNAL_TAG=${INTERNAL_TAG}
                    --build-arg JUG_VERSION=${INTERNAL_TAG}-$(git rev-parse HEAD)
@@ -333,11 +339,10 @@ jug_dev:default:
     ## calculate a hash based on the spack.yaml file and the spack directory
     ## and use this spack as a docker variable to force a rebuild when there
     ## is a change (versus rerun from cache)
-    - PACKAGE_HASH=$(tar cf - spack* | sha1sum | head -c40)
-    - echo "PACKAGE_HASH= ${PACKAGE_HASH}"
-    ## move spack directory and spack.yaml into the container build directory
-    - cp -r spack containers/jug
-    - cp -r spack.yaml containers/jug/spack/spack.yaml
+    - PACKAGE_HASH=$(sha1sum spack.yaml | head -c40)
+    - echo "PACKAGE_HASH=${PACKAGE_HASH}"
+    ## move spack.yaml into the container build directory
+    - cp -r spack.yaml containers/jug
     - CACHE_FLAG=""
     - |
       if [ $FORCE_NOCACHE = 1 ]; then
@@ -351,6 +356,8 @@ jug_dev:default:
                    -f containers/jug/dev.Dockerfile
                    --build-arg SPACK_VERSION="${SPACK_VERSION}"
                    --build-arg SPACK_CHERRYPICKS="${SPACK_CHERRYPICKS}"
+                   --build-arg EICSPACK_VERSION="${EICSPACK_VERSION}"
+                   --build-arg EICSPACK_CHERRYPICKS="${EICSPACK_CHERRYPICKS}"
                    --build-arg CACHE_BUST=${PACKAGE_HASH}
                    --build-arg INTERNAL_TAG=${INTERNAL_TAG}
                    --build-arg JUG_VERSION=${INTERNAL_TAG}-$(git rev-parse HEAD)
@@ -360,6 +367,8 @@ jug_dev:default:
                    -f containers/jug/dev.Dockerfile
                    --build-arg SPACK_VERSION="${SPACK_VERSION}"
                    --build-arg SPACK_CHERRYPICKS="${SPACK_CHERRYPICKS}"
+                   --build-arg EICSPACK_VERSION="${EICSPACK_VERSION}"
+                   --build-arg EICSPACK_CHERRYPICKS="${EICSPACK_CHERRYPICKS}"
                    --build-arg CACHE_BUST=${PACKAGE_HASH}
                    --build-arg INTERNAL_TAG=${INTERNAL_TAG}
                    --build-arg JUG_VERSION=${INTERNAL_TAG}-$(git rev-parse HEAD)
diff --git a/containers/jug/dev.Dockerfile b/containers/jug/dev.Dockerfile
index 31471367bc9bc30a38a41327e6864960730eef5b..637eec672e5870f2667bb572ddfb3886a5690cd2 100644
--- a/containers/jug/dev.Dockerfile
+++ b/containers/jug/dev.Dockerfile
@@ -78,14 +78,20 @@ RUN --mount=type=cache,target=/var/cache/spack-mirror                   \
 ARG CACHE_BUST="hash"
 ARG CACHE_NUKE=""
 
-## Setup our custom environment and package overrides
-COPY spack $SPACK_ROOT/eic-spack
-RUN spack repo add --scope site "$SPACK_ROOT/eic-spack"                 \
- && mkdir /opt/spack-environment                                        \
- && cd /opt/spack-environment                                           \
- && mv $SPACK_ROOT/eic-spack/spack.yaml .                               \
- && rm -r /usr/local                                                    \
- && spack env activate .                                                \
+## Setup our custom package overrides
+ENV EICSPACK_ROOT=$SPACK_ROOT/var/spack/repos/eic-spack
+ARG EICSPACK_VERSION="$SPACK_VERSION"
+RUN git clone https://github.com/eic/eic-spack.git ${EICSPACK_ROOT}     \
+ && git -C ${EICSPACK_ROOT} checkout ${EICSPACK_VERSION}                \
+ && if [ -n "${EICSPACK_CHERRYPICKS}" ] ; then                          \
+      git -C ${EICSPACK_ROOT} cherry-pick -n ${EICSPACK_CHERRYPICKS} ;  \
+    fi                                                                  \
+ && spack repo add --scope site "${EICSPACK_ROOT}"
+
+## Setup our custom environment
+COPY spack.yaml /opt/spack-environment/
+RUN rm -r /usr/local                                                    \
+ && spack env activate /opt/spack-environment/                          \
  && spack concretize
 
 
diff --git a/containers/oneapi/onedev.Dockerfile b/containers/oneapi/onedev.Dockerfile
index bdc29037e80b9605776e7217d25f3a8e5f252a31..e2eb45cbbf09c272ff8f17183aeded9b95d985eb 100644
--- a/containers/oneapi/onedev.Dockerfile
+++ b/containers/oneapi/onedev.Dockerfile
@@ -88,14 +88,20 @@ RUN --mount=type=cache,target=/var/cache/spack-mirror                   \
 ARG CACHE_BUST="hash"
 ARG CACHE_NUKE=""
 
-## Setup our custom environment and package overrides
-COPY spack $SPACK_ROOT/eic-spack
-RUN spack repo add --scope site "$SPACK_ROOT/eic-spack"                 \
- && mkdir /opt/spack-environment                                        \
- && cd /opt/spack-environment                                           \
- && mv $SPACK_ROOT/eic-spack/spack.yaml .                               \
- && rm -r /usr/local                                                    \
- && spack env activate .                                                \
+## Setup our custom package overrides
+ENV EICSPACK_ROOT=$SPACK_ROOT/var/spack/repos/eic-spack
+ARG EICSPACK_VERSION="$SPACK_VERSION"
+RUN git clone https://github.com/eic/eic-spack.git ${EICSPACK_ROOT}     \
+ && git -C ${EICSPACK_ROOT} checkout ${EICSPACK_VERSION}                \
+ && if [ -n "${EICSPACK_CHERRYPICKS}" ] ; then                          \
+      git -C ${EICSPACK_ROOT} cherry-pick -n ${EICSPACK_CHERRYPICKS} ;  \
+    fi                                                                  \
+ && spack repo add --scope site "${EICSPACK_ROOT}"
+
+## Setup our custom environment
+COPY spack.yaml /opt/spack-environment/
+RUN rm -r /usr/local                                                    \
+ && spack env activate /opt/spack-environment/                          \
  && spack concretize
 
 
diff --git a/spack/.gitignore b/spack/.gitignore
deleted file mode 100644
index 2927022e8adab3e4c21ffcd949f9938171979b27..0000000000000000000000000000000000000000
--- a/spack/.gitignore
+++ /dev/null
@@ -1,141 +0,0 @@
-# Byte-compiled / optimized / DLL files
-__pycache__/
-*.py[cod]
-*$py.class
-
-# C extensions
-*.so
-
-# Distribution / packaging
-.Python
-build/
-develop-eggs/
-dist/
-downloads/
-eggs/
-.eggs/
-lib/
-lib64/
-parts/
-sdist/
-var/
-wheels/
-share/python-wheels/
-*.egg-info/
-.installed.cfg
-*.egg
-MANIFEST
-
-# PyInstaller
-#  Usually these files are written by a python script from a template
-#  before PyInstaller builds the exe, so as to inject date/other infos into it.
-*.manifest
-*.spec
-
-# Installer logs
-pip-log.txt
-pip-delete-this-directory.txt
-
-# Unit test / coverage reports
-htmlcov/
-.tox/
-.nox/
-.coverage
-.coverage.*
-.cache
-nosetests.xml
-coverage.xml
-*.cover
-*.py,cover
-.hypothesis/
-.pytest_cache/
-cover/
-
-# Translations
-*.mo
-*.pot
-
-# Django stuff:
-*.log
-local_settings.py
-db.sqlite3
-db.sqlite3-journal
-
-# Flask stuff:
-instance/
-.webassets-cache
-
-# Scrapy stuff:
-.scrapy
-
-# Sphinx documentation
-docs/_build/
-
-# PyBuilder
-.pybuilder/
-target/
-
-# Jupyter Notebook
-.ipynb_checkpoints
-
-# IPython
-profile_default/
-ipython_config.py
-
-# pyenv
-#   For a library or package, you might want to ignore these files since the code is
-#   intended to run in multiple environments; otherwise, check them in:
-# .python-version
-
-# pipenv
-#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version
-#   control.
-#   However, in case of collaboration, if having platform-specific dependencies or
-#   dependencies
-#   having no cross-platform support, pipenv may install dependencies that don't work, or
-#   not
-#   install all needed dependencies.
-#Pipfile.lock
-
-# PEP 582; used by e.g. github.com/David-OConnor/pyflow
-__pypackages__/
-
-# Celery stuff
-celerybeat-schedule
-celerybeat.pid
-
-# SageMath parsed files
-*.sage.py
-
-# Environments
-.env
-.venv
-env/
-venv/
-ENV/
-env.bak/
-venv.bak/
-
-# Spyder project settings
-.spyderproject
-.spyproject
-
-# Rope project settings
-.ropeproject
-
-# mkdocs documentation
-/site
-
-# mypy
-.mypy_cache/
-.dmypy.json
-dmypy.json
-
-# Pyre type checker
-.pyre/
-
-# pytype static type analyzer
-.pytype/
-
-# Cython debug symbols
-cython_debug/
diff --git a/spack/README.md b/spack/README.md
deleted file mode 100644
index aae04684fe93b58f21a260c3d1ebdf177dca100a..0000000000000000000000000000000000000000
--- a/spack/README.md
+++ /dev/null
@@ -1,29 +0,0 @@
-# Custom Spack Repository
-
-Extra spack repository with EIC-related packages and overrides. 
-
-## How to load this repository
-To load the repository, clone and then load with spack:
-```bash
-spack clone https://eicweb.phy.anl.gov/containers/eic_container.git
-spack repo add eic_contaienr/spack
-```
-
-Then use spack as you normally would.
-
-## Packages
-  * New packages
-    - `dawn`: A tool to visualize detector geometries.
-    - `dawncut`: A tool to edit detector visualizations.
-  * Package overrides
-    * `acts`: Patch bug for simple disk geometries
-    * `dd4hep`: Fix package hash which somehow is wrong in spack...
-    * `Geant4`: Add extra hardcoded materials with Birks constant
-    * `fmt`: Modified compiler flags to build shared library version.
-    * `madx`: Add madx package
-    * `podio`: add v0.13.1, also patch issue in cmake setup to allow build under /tmp/root, as needed by spack
-    * `qt`: Added gcc10.patch to fix issues compiling QT with gcc10
-    * `root`: Re-enabled http module as this builds fine on modern Linux systems and we use this heavily.
-
-
-
diff --git a/spack/packages/dawn/exec.patch b/spack/packages/dawn/exec.patch
deleted file mode 100644
index f0b939a65cdda159a9c6d10d32ae19c042a2f37f..0000000000000000000000000000000000000000
--- a/spack/packages/dawn/exec.patch
+++ /dev/null
@@ -1,7 +0,0 @@
-diff --git a/DAWN_GUI_menu.header2 b/DAWN_GUI_menu.header2
-index ef35492..7fa067b 100644
---- a/DAWN_GUI_menu.header2
-+++ b/DAWN_GUI_menu.header2
-@@ -1 +1 @@
--exec wish "$0" "$@"
-+exec wish "$0" ${1+"$@"}
diff --git a/spack/packages/dawn/install.patch b/spack/packages/dawn/install.patch
deleted file mode 100644
index 961dfde2bf4611976994263ce087261dc6b14dfa..0000000000000000000000000000000000000000
--- a/spack/packages/dawn/install.patch
+++ /dev/null
@@ -1,12 +0,0 @@
-diff --git a/Makefile b/Makefile
-index 96e42e7..c9bb589 100644
---- a/Makefile
-+++ b/Makefile
-@@ -267,6 +267,7 @@ clean:
- 
- ### install 
- install:
-+	mkdir -p $(INSTALL_DIR)
- 	cp -p ./$(EXEC)    	   $(INSTALL_DIR)/$(EXEC)
- 	cp -p ./$(GUI_MENU)        $(INSTALL_DIR)/$(GUI_MENU)
- 	cp -p ./$(EXEC)unixd       $(INSTALL_DIR)/$(EXEC)unixd
diff --git a/spack/packages/dawn/package.py b/spack/packages/dawn/package.py
deleted file mode 100644
index 52da825cc628d06a437a6c88b961dd29a4e5c2ed..0000000000000000000000000000000000000000
--- a/spack/packages/dawn/package.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
-# Spack Project Developers. See the top-level COPYRIGHT file for details.
-#
-# SPDX-License-Identifier: (Apache-2.0 OR MIT)
-
-from spack import *
-import os
-
-
-class Dawn(MakefilePackage):
-    """ Fukui  Renderer   DAWN (Drawer for Academic WritiNgs) 
-    is a renderer, which reads 3D geometrical data and visualize them.  
-    It is a vectorized 3D PostScript processor with analytical 
-    hidden line/surface removal. 
-    It aims at precise technical drawing of complex geometries.  
-    It performs geometrical hidden line/surface removal and calculates 
-    out all visible parts of the 3D data before drawing.  This drawing 
-    algorithm realizes device-independent technical high quality of
-    vectorized graphics.
-    3D Data files should be generated by a modeler or by hands 
-    separately.  If you use DAWN as a visualizer of, 
-    say, a simulator of physical experiments, 
-    the simulator application itself is recognized as a modeler.
-    An important feature of DAWN is that
-    it has been developed to visualize 3D data generated by
-    a high-energy experimental detector simulator "GEANT4" 
-    ( http://geant4.web.cern.ch/geant4 , http://geant4.kek.jp ).  
-
-    Note: we set 'gv' as default pdf/ps viewer, assuming this is
-          installed on your system.
-    """
-
-    # Note: Dawn homepage not available anymore...
-    homepage = "https://geant4.kek.jp/~tanaka"
-    url      = "http://geant4.kek.jp/~tanaka/src/dawn_3_91a.tgz"
-
-    maintainers = ['sly2j']
-
-    version('3_91a', sha256='81d855ead1117681b188242dd0be3a24e005d9bd4063fd2bda9a7a794ebcf5f4')
-
-    depends_on('tcl')
-    depends_on('tk')
-
-    ## Patch to ensure wish is called correctly
-    patch('exec.patch')
-    patch('install.patch')
-
-    def edit(self, spec, prefix):
-        makefile = FileFilter("Makefile")
-        makefile.filter('CC= .*', 'CC = ' + env['CC'])
-        makefile.filter('CXX = .*', 'CXX = ' + env['CXX'])
-        makefile.filter('INSTALL_DIR = .*', 'INSTALL_DIR = {}/bin'.format(prefix))
-        os.environ['DAWN_PS_PREVIEWER'] = 'gv'
diff --git a/spack/packages/dawncut/install.patch b/spack/packages/dawncut/install.patch
deleted file mode 100644
index 3f939a4eced20b5607cbc508bc7c1e8789a23c98..0000000000000000000000000000000000000000
--- a/spack/packages/dawncut/install.patch
+++ /dev/null
@@ -1,20 +0,0 @@
-diff --git a/Makefile b/Makefile
-index 1dda775..e8a567f 100644
---- a/Makefile
-+++ b/Makefile
-@@ -1,6 +1,7 @@
- include ./Makefile.architecture
- 
- TARGET = dawncut
-+INSTALL_DIR ?= /usr/local/bin
- 
- SRC_DIR = src
- 
-@@ -44,3 +45,7 @@ clean :
- 	$(RM) $(TARGET) core
- 	$(RM) *~ \#*
- 
-+### install 
-+install:
-+	mkdir -p $(INSTALL_DIR)
-+	cp -p ./$(TARGET)    	   $(INSTALL_DIR)/$(TARGET)
diff --git a/spack/packages/dawncut/package.py b/spack/packages/dawncut/package.py
deleted file mode 100644
index ffe9adfa32f4f133391e3610f073dfa0d3173007..0000000000000000000000000000000000000000
--- a/spack/packages/dawncut/package.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# Copyright 203-2020 Lawrence Livermore National Security, LLC and other
-# Spack Project Developers. See the top-level COPYRIGHT file for details.
-#
-# SPDX-License-Identifier: (Apache-2.0 OR MIT)
-
-from spack import *
-import os
-
-class Dawncut(MakefilePackage):
-    """DAWNCUT is a tool to generate a 3D scene data clipped with an arbitrary plane.
-    It reads a source DAWN-format file and outputs a new DAWN-format data, 
-    describing a plane-clipped 3D scene.  The output DAWN-format data can be 
-    visualized with Fukui Renderer DAWN.
-    """
-
-    # dawn webpage not available anymore
-    homepage = "https://geant4.kek.jp/~tanaka"
-    url = "http://geant4.kek.jp/~tanaka/src/dawncut_1_54a.taz"
-    maintainers = ['sly2j']
-
-    version('1_54a',
-            url='http://geant4.kek.jp/~tanaka/src/dawncut_1_54a.taz',
-            sha256='531e1f0e2ed35de3e2b1803108c0efb732d83a0c676f14083bd41a71346b4fa9',
-            expand=False)
-
-    phases = ['unpack', 'repatch', 'edit', 'build', 'install']
-
-    def unpack(self, spec, prefix):
-        # Untar inner tar files
-        def members(tf, tld):
-            l = len(tld)
-            for member in tf.getmembers():
-                if member.path.startswith(tld):
-                    member.path = member.path[l:]
-                    yield member
-
-        with working_dir(self.stage.source_path):
-            import tarfile
-            install_tar = tarfile.open('dawncut_1_54a.taz')
-            install_tar.extractall(members=members(install_tar, 'dawncut_1_54a/'))
-
-    def repatch(self, spec, prefix):
-        # Patch to add install directive to Makefile
-        src = self.stage.source_path
-        patches = self.package_dir
-        which('patch')('-N', '-l', '-p1',
-                       '-i', join_path(patches, 'install.patch'))
-
-    def edit(self, spec, prefix):
-        makefile = FileFilter("Makefile")
-        makefile.filter('CC= .*', 'CC = ' + env['CC'])
-        makefile.filter('CXX = .*', 'CXX = ' + env['CXX'])
-        os.environ['INSTALL_DIR'] = '{}/bin'.format(prefix)
diff --git a/spack/packages/farmhash/package.py b/spack/packages/farmhash/package.py
deleted file mode 100644
index a11c5ee06f3b95da5c14526fa77729e6617d6a2d..0000000000000000000000000000000000000000
--- a/spack/packages/farmhash/package.py
+++ /dev/null
@@ -1,26 +0,0 @@
-# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
-# Spack Project Developers. See the top-level COPYRIGHT file for details.
-#
-# SPDX-License-Identifier: (Apache-2.0 OR MIT)
-
-from spack import *
-
-
-class Farmhash(AutotoolsPackage):
-    """FarmHash is a family of hash functions."""
-
-    homepage = "https://github.com/google/farmhash"
-    url      = "https://github.com/google/farmhash"
-    git      = "https://github.com/google/farmhash"
-
-    maintainers = ['wdconinc']
-
-    version('master', branch='master')
-
-    depends_on('autoconf', type='build', when='@master')
-    depends_on('automake', type='build', when='@master')
-    depends_on('libtool',  type='build', when='@master')
-
-    force_autoreconf = True
-
-    patch('https://github.com/google/farmhash/pull/25.patch',sha256='cbb6709d51d8d517d5df8a47e5c1867610dc5352152e78b64dec75620f95cc97')
diff --git a/spack/packages/gaudi/package.py b/spack/packages/gaudi/package.py
deleted file mode 100644
index ddf96ac873c070b5a3cace1926e50df2e4983b8e..0000000000000000000000000000000000000000
--- a/spack/packages/gaudi/package.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from spack import *
-from spack.pkg.builtin.gaudi import Gaudi as BuiltinGaudi
-class Gaudi(BuiltinGaudi):
-    patch('https://gitlab.cern.ch/gaudi/Gaudi/-/commit/03db151003d5207795ae8ec96aaf2f5f8a9ea008.diff',
-          sha256='e73f45f10ea4a143a05c53a468233ceaad1a8ec22dee9877d178a3c9ee46c70f',
-          when='@:36.5')
diff --git a/spack/packages/geant4/birks.patch b/spack/packages/geant4/birks.patch
deleted file mode 100644
index 903ac6fcceff16d261264cc734262165ef10a299..0000000000000000000000000000000000000000
--- a/spack/packages/geant4/birks.patch
+++ /dev/null
@@ -1,44 +0,0 @@
-diff --git a/source/processes/electromagnetic/utils/src/G4EmSaturation.cc b/source/processes/electromagnetic/utils/src/G4EmSaturation.cc
-index 9fb850dd7..f47c56c02 100644
---- a/source/processes/electromagnetic/utils/src/G4EmSaturation.cc
-+++ b/source/processes/electromagnetic/utils/src/G4EmSaturation.cc
-@@ -269,7 +269,7 @@ void G4EmSaturation::DumpG4BirksCoefficients()
- 
- void G4EmSaturation::InitialiseG4materials()
- {
--  nG4Birks = 4;
-+  nG4Birks = 13;
-   g4MatData.reserve(nG4Birks);
- 
-   // M.Hirschberg et al., IEEE Trans. Nuc. Sci. 39 (1992) 511
-@@ -305,6 +305,30 @@ void G4EmSaturation::InitialiseG4materials()
-   //G4_PbWO4 - CMS value
-   g4MatNames.push_back("G4_PbWO4");
-   g4MatData.push_back(0.0333333*mm/MeV);
-+  // PbWO4 used in HybdriCalorimeter
-+  g4MatNames.push_back("PbWO4");
-+  g4MatData.push_back(0.0333333*mm/MeV);
-+  // Estimate SciGlass to be similar to PbWO4 as it still has to be measured
-+  g4MatNames.push_back("SciGlass");
-+  g4MatData.push_back(0.0333333*mm/MeV);
-+
-+  // Various plastic scintillator materials
-+  g4MatNames.push_back("PlasticScint079");
-+  g4MatData.push_back(0.07943*mm/MeV);
-+
-+  g4MatNames.push_back("polystyrene");
-+  g4MatData.push_back(0.126*mm/MeV);
-+  g4MatNames.push_back("Polystyrene");
-+  g4MatData.push_back(0.126*mm/MeV);
-+  g4MatNames.push_back("PlasticScint");
-+  g4MatData.push_back(0.126*mm/MeV);
-+  g4MatNames.push_back("PlasticScint126");
-+  g4MatData.push_back(0.126*mm/MeV);
-+  g4MatNames.push_back("PlasticScintillator");
-+  g4MatData.push_back(0.126*mm/MeV);
-+
-+  g4MatNames.push_back("PlasticScint153");
-+  g4MatData.push_back(0.153*mm/MeV);
- 
-   //G4_Lucite
- 
diff --git a/spack/packages/geant4/package.py b/spack/packages/geant4/package.py
deleted file mode 100644
index 5e1ae42f56fcd97849b22bb8a81b645d9c7017ee..0000000000000000000000000000000000000000
--- a/spack/packages/geant4/package.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from spack import *
-from spack.pkg.builtin.geant4 import Geant4 as BuiltinGeant4
-
-
-class Geant4(BuiltinGeant4):
-    ## Add to the hardcoded GEANT4 Birk's constants
-    patch('birks.patch', when='@10.7.0:')
diff --git a/spack/packages/jana2/package.py b/spack/packages/jana2/package.py
deleted file mode 100644
index d9f91c78157a5c4c2a348e4b26ea117d4c7acc45..0000000000000000000000000000000000000000
--- a/spack/packages/jana2/package.py
+++ /dev/null
@@ -1,59 +0,0 @@
-# Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
-# Spack Project Developers. See the top-level COPYRIGHT file for details.
-#
-# SPDX-License-Identifier: (Apache-2.0 OR MIT)
-
-from spack import *
-
-
-class Jana2(CMakePackage):
-    """Multi-threaded HENP Event Reconstruction."""
-
-    homepage = "https://jeffersonlab.github.io/JANA2/"
-    url      = "https://github.com/JeffersonLab/JANA2/archive/v2.0.3.tar.gz"
-    list_url = "https://github.com/JeffersonLab/JANA2/releases"
-    git      = "https://github.com/JeffersonLab/JANA2.git"
-
-    maintainer = ["wdconinc"]
-
-    tags = ['eic']
-
-    version('master', branch='master')
-    version('2.0.6', sha256='122ceba6e9541949803073b6e51fb594500132cf7535808d635bdc193e95a9e2')
-    version('2.0.5', sha256='2e7297dfb0bd7f4a2f2fa3bca6b1c10b2553d321dec6060e48b0d75a5ed6717d')
-    version('2.0.4', sha256='848adffcb881beb7835d01ce47a58991bb4f92664c9477196960ce8cfd94a3ca')
-    version('2.0.3', sha256='fd34c40e2d6660ec08aca9208999dd9c8fe17de21c144ac68b6211070463e415')
-    version('2.0.2', sha256='161d29c2b1efbfb36ec783734b45dff178b0c6bd77a2044d5a8829ba5b389b14')
-    version('2.0.1', sha256='1471cc9c3f396dc242f8bd5b9c8828b68c3c0b72dbd7f0cfb52a95e7e9a8cf31')
-
-    variant('root',
-            default=False,
-            description='Use ROOT for janarate.')
-    variant('zmq',
-            default=False,
-            description='Use zeroMQ for janacontrol.')
-
-    depends_on('cmake@3.9:', type='build')
-    depends_on('cppzmq', when='+zmq')
-    depends_on('root', when='+root')
-    depends_on('xerces-c')
-
-    def cmake_args(self):
-        args = []
-        # ZeroMQ directory
-        if '+zmq' in self.spec:
-            args.append('-DZEROMQ_DIR=%s'
-                        % self.spec['cppzmq'].prefix)
-        # C++ Standard
-        if '+root' in self.spec:
-            args.append('-DCMAKE_CXX_STANDARD=%s'
-                        % self.spec['root'].variants['cxxstd'].value)
-        else:
-            args.append('-DCMAKE_CXX_STANDARD=11')
-
-        return args
-
-    def setup_run_environment(self, env):
-        import os
-        env.append_path('JANA_PLUGIN_PATH', os.path.join(self.prefix, 'plugins'))
-        env.set('JANA_HOME', self.prefix)
diff --git a/spack/packages/tensorflow-lite/package.py b/spack/packages/tensorflow-lite/package.py
deleted file mode 100644
index 58ef88f0e8af03c4df6b62e40d18ca84b710ec57..0000000000000000000000000000000000000000
--- a/spack/packages/tensorflow-lite/package.py
+++ /dev/null
@@ -1,97 +0,0 @@
-# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
-# Spack Project Developers. See the top-level COPYRIGHT file for details.
-#
-# SPDX-License-Identifier: (Apache-2.0 OR MIT)
-
-from spack import *
-import os
-
-
-class TensorflowLite(CMakePackage):
-    """TensorFlow Lite is TensorFlow's lightweight solution for mobile and
-    embedded devices. It enables low-latency inference of on-device machine
-    learning models with a small binary size and fast performance supporting
-    hardware acceleration."""
-
-    homepage = "https://www.tensorflow.org/lite/"
-    url      = "https://github.com/tensorflow/tensorflow/archive/refs/tags/v2.8.0.tar.gz"
-
-    maintainers = ['wdconinc']
-
-    version('2.8.0', sha256='66b953ae7fba61fd78969a2e24e350b26ec116cf2e6a7eb93d02c63939c6f9f7')
-
-    variant('gpu', default=False, description='Enable GPU support')
-    variant('metal', default=False, description='Enable Metal support')
-    variant('xnnpack', default=True, description='Enable XNNPACK support')
-    variant('shared', default=False, description='Build shared libraries')
-
-    depends_on('cmake@3.16:', type='build')
-
-    # TODO this package still overrides the upstream software with its own FetchContent
-    depends_on('abseil-cpp')
-    depends_on('eigen')
-    depends_on('flatbuffers')
-    depends_on('fp16')
-    depends_on('gemmlowp')
-    depends_on('psimd')
-    depends_on('pthreadpool')
-    depends_on('farmhash')
-    #depends_on(fft2d REQUIRED)
-    #depends_on(neon2sse REQUIRED)
-    depends_on('cpuinfo')
-    #depends_on(ruy REQUIRED)
-
-    # GPU variant dependencies
-    depends_on('opencl', when='gpu')
-    #find_package(vulkan_headers REQUIRED)
-    #find_package(fp16_headers REQUIRED)
-    #find_package(opengl_headers REQUIRED)
-    #find_package(egl_headers REQUIRED)
-
-    # XNNPACK variant dependencies
-    depends_on('xnnpack', when='xnnpack')
-
-    root_cmakelists_dir = 'tensorflow/lite'
-
-    def patch(self):
-        # Two utilities in subdirectory pull headers from outside lite
-        filter_file("^add_subdirectory",
-                    "#add_subdirectory",
-                    "tensorflow/lite/CMakeLists.txt")
-
-    def cmake_args(self):
-        args = [
-            self.define_from_variant('TFLITE_ENABLE_GPU', 'gpu'),
-            self.define_from_variant('TFLITE_ENABLE_METAL', 'metal'),
-            self.define_from_variant('TFLITE_ENABLE_XNNPACK', 'xnnpack'),
-            self.define_from_variant('BUILD_SHARED_LIBS', 'shared'),
-            self.define('TFLITE_KERNEL_TEST', self.run_tests),
-        ]
-        return args
-
-    def install(self, spec, prefix):
-        # Currently no install target is defined, but allowing for future
-        super().install(spec, prefix)
-        
-        # Instal library
-        mkdirp(self.prefix.lib)
-        with working_dir(self.build_directory):
-            for l in find('.', 'libtensorflow-lite.*', recursive=False):
-                install(l, self.prefix.lib)
-        
-        # Install headers for tensorflow itself
-        mkdirp(self.prefix.include)
-        for h in find(join_path(self.stage.source_path, 'tensorflow/lite'),
-                      '*.h', recursive=True):
-            relpath = os.path.relpath(h)
-            dirname = os.path.dirname(relpath)
-            installdir = join_path(self.prefix.include, dirname)
-            mkdirp(installdir)
-            install(h, installdir)
-
-        # Install headers for vendored dependencies
-        for d in ['flatbuffers']:
-            install_tree(
-                join_path(self.build_directory, d, 'include'),
-                self.prefix.include
-            )
diff --git a/spack/repo.yaml b/spack/repo.yaml
deleted file mode 100644
index 6cde3b536a3aa094cb663026280909c73ca6c430..0000000000000000000000000000000000000000
--- a/spack/repo.yaml
+++ /dev/null
@@ -1,2 +0,0 @@
-repo:
-  namespace: 'np-spack'