diff --git a/configs/sites/tier1/gaea-c7/packages.yaml b/configs/sites/tier1/gaea-c7/packages.yaml
index e7c6f88d9f..98e0569e08 100644
--- a/configs/sites/tier1/gaea-c7/packages.yaml
+++ b/configs/sites/tier1/gaea-c7/packages.yaml
@@ -5,6 +5,9 @@ packages:
   zlib:
     require::
     - '@1.2.13'
+  cairo:
+    # /usr/lib64/libgdk-x11-2.0.so: undefined reference to `cairo_xlib_surface_set_size'
+    require: +X
 
   autoconf:
     externals:
diff --git a/configs/sites/tier1/gaea-c7/packages_oneapi-2025.3.1.yaml b/configs/sites/tier1/gaea-c7/packages_oneapi-2025.3.1.yaml
index bb16e66229..b1ae54bd05 100644
--- a/configs/sites/tier1/gaea-c7/packages_oneapi-2025.3.1.yaml
+++ b/configs/sites/tier1/gaea-c7/packages_oneapi-2025.3.1.yaml
@@ -42,6 +42,7 @@ packages:
     - spec: intel-oneapi-mkl@2025.3.1
       prefix: /sw/gaea-c7/spack/envs/env_26.06/opt/intel-oneapi-compilers-2025.3.1/intel-oneapi-mkl-2025.3.1-xxdwsuy4jxt34coagmd66yhi33u2fy6v
       modules:
+      - oneapi/2025.3.1
       - intel-oneapi-mkl/2025.3.1
   gcc:
     buildable: False
diff --git a/configs/sites/tier1/gaea-c7/packages_oneapi-2026.0.0.yaml b/configs/sites/tier1/gaea-c7/packages_oneapi-2026.0.0.yaml
index edc8f479a7..fa6b161ef2 100644
--- a/configs/sites/tier1/gaea-c7/packages_oneapi-2026.0.0.yaml
+++ b/configs/sites/tier1/gaea-c7/packages_oneapi-2026.0.0.yaml
@@ -42,6 +42,7 @@ packages:
     - spec: intel-oneapi-mkl@2026.0.0
       prefix: /sw/gaea-c7/spack/envs/env_26.06/opt/intel-oneapi-compilers-2026.0.0/intel-oneapi-mkl-2026.0.0-ferm7nss4cxphhlu5rbcxzwblz7xyg53
       modules:
+      - oneapi/2026.0.0
       - intel-oneapi-mkl/2026.0.0
   gcc:
     buildable: False