Adding base packages to get same compiler outside the environment

ci/setup_spack.sh

@@ -82,7 +82,11 @@ cp "${SPACK_SYSTEM_CONFIG_PATH}/mirrors.yaml" spack/etc/spack
 
 echo "Setting up packages"
 
-echo "packages:" > ${SPACK_SYSTEM_CONFIG_PATH}/packages.yaml
+if [ ! -e ${SPACK_SYSTEM_CONFIG_PATH}/packages.yaml ]
+then
+  echo "packages:" > ${SPACK_SYSTEM_CONFIG_PATH}/packages.yaml
+fi
+
 export system_compiler=$(jq -Mrc '
 .stack
  | .system_arch as $arch

stacks/pinot-noir-gcc/packages.yaml

+packages:
+  all:
+    providers:
+      mpi: [openmpi, intel-oneapi-mpi]
+      iconv: [libiconv]
+      jpeg: [libjpeg]
+      zlib-api: [zlib-ng]
+    require:
+      - spec: "^libiconv"
+        when: "^iconv"
+
+  zlib-ng:
+    require: ['build_system=autotools']