diff --git a/.github/build-ci/config/include.yaml b/.github/build-ci/config/include.yaml
new file mode 100644
index 0000000000..8c8139c716
--- /dev/null
+++ b/.github/build-ci/config/include.yaml
@@ -0,0 +1,6 @@
+# This file is included via the manifest
+include:
+  - git: https://github.com/ACCESS-NRI/access-spack-packages
+    branch: api-v2
+    paths:
+    - .github/build-ci/config/include
diff --git a/.github/build-ci/config/packages.yaml b/.github/build-ci/config/packages.yaml
new file mode 100644
index 0000000000..e467828968
--- /dev/null
+++ b/.github/build-ci/config/packages.yaml
@@ -0,0 +1,4 @@
+packages:
+  access3:
+    require:
+    - 'configurations=MOM6,MOM6-CICE6,MOM6-CICE6-WW3'
diff --git a/.github/build-ci/data/standard.json b/.github/build-ci/data/standard.json
deleted file mode 100644
index c35167a8bc..0000000000
--- a/.github/build-ci/data/standard.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "oneapi_compiler_version": "2025.2.0",
-  "target": "x86_64"
-}
diff --git a/.github/build-ci/manifests/oneapi_access-om3_asymm.spack.yaml.j2 b/.github/build-ci/manifests/oneapi_access-om3_asymm.spack.yaml.j2
index 1c15d1636f..e328e4564b 100644
--- a/.github/build-ci/manifests/oneapi_access-om3_asymm.spack.yaml.j2
+++ b/.github/build-ci/manifests/oneapi_access-om3_asymm.spack.yaml.j2
@@ -1,27 +1,11 @@
 spack:
+  include:
+  # Include configuration from this repository, with the environment variable defined in build-ci
+  - path: $SPACK_MANIFEST_REPOSITORY_PATH/.github/build-ci/config
   specs:
   - 'access-om3@latest ^openmpi'
   packages:
-    cmake:
-      require:
-      - '@3.31.6:'
-    access3:
-      require:
-      - 'configurations=MOM6,MOM6-CICE6,MOM6-CICE6-WW3'
     access-mom6:
       require:
-      - '@git.{{ ref }}=stable +asymmetric_mem +mom6_solo'
-    gcc-runtime:
-      require:
-      - '%access_gcc'
-      - 'target={{ target }}'
-    intel-oneapi-compilers:
-      require:
-      - '@{{ oneapi_compiler_version }}'
-    all:
-      require:
-      - '%access_oneapi'
-      - 'target={{ target }}'
-  concretizer:
-    unify: false
+      - '@git.{{ ref }}=stable +asymmetric_mem +mom6_solo %%access_oneapi'
   view: false
diff --git a/.github/build-ci/manifests/oneapi_access-om3_symm.spack.yaml.j2 b/.github/build-ci/manifests/oneapi_access-om3_symm.spack.yaml.j2
index 6d1641734f..67f3bd32ba 100644
--- a/.github/build-ci/manifests/oneapi_access-om3_symm.spack.yaml.j2
+++ b/.github/build-ci/manifests/oneapi_access-om3_symm.spack.yaml.j2
@@ -1,27 +1,11 @@
 spack:
+  include:
+  # Include configuration from this repository, with the environment variable defined in build-ci
+  - path: $SPACK_MANIFEST_REPOSITORY_PATH/.github/build-ci/config
   specs:
   - 'access-om3@latest ^openmpi'
   packages:
-    cmake:
-      require:
-      - '@3.31.6:'
-    access3:
-      require:
-      - 'configurations=MOM6,MOM6-CICE6,MOM6-CICE6-WW3'
     access-mom6:
       require:
-      - '@git.{{ ref }}=stable ~asymmetric_mem +mom6_solo'
-    gcc-runtime:
-      require:
-      - '%access_gcc'
-      - 'target={{ target }}'
-    intel-oneapi-compilers:
-      require:
-      - '@{{ oneapi_compiler_version }}'
-    all:
-      require:
-      - '%access_oneapi'
-      - 'target={{ target }}'
-  concretizer:
-    unify: false
+      - '@git.{{ ref }}=stable ~asymmetric_mem +mom6_solo %%access_oneapi'
   view: false
diff --git a/.github/build-ci/manifests/oneapi_mom6_access3.spack.yaml.j2 b/.github/build-ci/manifests/oneapi_mom6_access3.spack.yaml.j2
index 2593386183..3969747e23 100644
--- a/.github/build-ci/manifests/oneapi_mom6_access3.spack.yaml.j2
+++ b/.github/build-ci/manifests/oneapi_mom6_access3.spack.yaml.j2
@@ -1,21 +1,7 @@
 spack:
+  include:
+  # Include configuration from this repository, with the environment variable defined in build-ci
+  - path: $SPACK_MANIFEST_REPOSITORY_PATH/.github/build-ci/config
   specs:
-  - 'access-mom6@git.{{ ref }}=stable +access3 ~mom6_solo ^openmpi'
-  packages:
-    cmake:
-      require:
-      - '@3.31.6:'
-    gcc-runtime:
-      require:
-      - '%access_gcc'
-      - 'target={{ target }}'
-    intel-oneapi-compilers:
-      require:
-      - '@{{ oneapi_compiler_version }}'
-    all:
-      require:
-      - '%access_oneapi'
-      - 'target={{ target }}'
-  concretizer:
-    unify: false
+  - 'access-mom6@git.{{ ref }}=stable +access3 ~mom6_solo %%access_oneapi ^openmpi'
   view: false
diff --git a/.github/build-ci/manifests/oneapi_mom6_solo.spack.yaml.j2 b/.github/build-ci/manifests/oneapi_mom6_solo.spack.yaml.j2
index 591aed17c4..c7fb45af42 100644
--- a/.github/build-ci/manifests/oneapi_mom6_solo.spack.yaml.j2
+++ b/.github/build-ci/manifests/oneapi_mom6_solo.spack.yaml.j2
@@ -1,21 +1,7 @@
 spack:
+  include:
+  # Include configuration from this repository, with the environment variable defined in build-ci
+  - path: $SPACK_MANIFEST_REPOSITORY_PATH/.github/build-ci/config
   specs:
-  - 'access-mom6@git.{{ ref }}=stable ~access3 +mom6_solo ^openmpi'
-  packages:
-    cmake:
-      require:
-      - '@3.31.6:'
-    gcc-runtime:
-      require:
-      - '%access_gcc'
-      - 'target={{ target }}'
-    intel-oneapi-compilers:
-      require:
-      - '@{{ oneapi_compiler_version }}'
-    all:
-      require:
-      - '%access_oneapi'
-      - 'target={{ target }}'
-  concretizer:
-    unify: false
+  - 'access-mom6@git.{{ ref }}=stable ~access3 +mom6_solo %%access_oneapi ^openmpi'
   view: false
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7f8d532a45..7363617c31 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
     outputs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up matrix
         id: set-matrix
@@ -29,12 +29,9 @@ jobs:
       max-parallel: 5
       matrix:
         file: ${{ fromJson(needs.pre-ci.outputs.matrix) }}
-    uses: access-nri/build-ci/.github/workflows/ci.yml@v3
+    uses: access-nri/build-ci/.github/workflows/ci.yml@v4
     with:
       spack-manifest-path: ${{ matrix.file }}
       allow-ssh-into-spack-install: false  # If true, PR author must ssh into instance to complete job
-      spack-manifest-data-path: .github/build-ci/data/standard.json
-      # builtin-spack-packages-ref: develop
-      # access-spack-packages-ref: api-v2
-      # spack-config-ref: main
-      # spack-ref: releases/v1.1
+      # More args, including setting spack/spack-config refs, can be found in https://github.com/ACCESS-NRI/build-ci/blob/v4/.github/workflows/README.md
+