diff --git a/.github/workflows/Spack.yml b/.github/workflows/Spack.yml
index eaecd5b9..633850c6 100644
--- a/.github/workflows/Spack.yml
+++ b/.github/workflows/Spack.yml
@@ -24,7 +24,7 @@ jobs:
         openmp: ["+openmp", "~openmp"]
         sharedlibs: ["+shared", "~shared"]
         pic: ["+pic", "~pic"]
-        precision: ["precision=d", "precision=4", "precision=8"]
+        precision: ["d", "4", "8"]
     runs-on: ${{ matrix.os }}
 
     steps:
@@ -41,15 +41,17 @@ jobs:
         spack env create ip-env
         spack env activate ip-env
         cp $GITHUB_WORKSPACE/ip/spack/package.py $SPACK_ROOT/var/spack/repos/builtin/packages/ip/package.py
-        mv $GITHUB_WORKSPACE/ip $SPACK_ENV/ip
-        spack develop --no-clone ip@develop
-        spack add ip@develop%gcc@11 ${{ matrix.openmp }} ${{ matrix.sharedlibs }} ${{ matrix.pic }} ${{ matrix.precision }} target=x86_64
+        spack develop --no-clone --path $GITHUB_WORKSPACE/ip ip@develop
+        spack add ip@develop%gcc@11 ${{ matrix.openmp }} ${{ matrix.sharedlibs }} ${{ matrix.pic }} precision=${{ matrix.precision }} target=x86_64
+        if [ ${{ matrix.precision }} == "d" ]; then spack add grib-util@develop ; fi
         spack external find cmake gmake
         spack concretize
         # Run installation and run CTest suite
         spack install --verbose --fail-fast --test root
-        # Run 'spack load' to check for obvious errors in setup_run_environment
+        # Run 'spack load' and check that key build options were respected
         spack load ip
+        if [ ${{ matrix.sharedlibs }} == "+shared" ]; then suffix="so" ; else suffix="a"; fi
+        ls ${IP_LIB${{ matrix.precision }}} | grep -cE '/libip_${{ matrix.precision }}\.'$suffix'$'
 
   # This job validates the Spack recipe by making sure each cmake build option is represented
   recipe-check:
diff --git a/cmake/PackageConfig.cmake.in b/cmake/PackageConfig.cmake.in
index 86eed6e7..c63b4fb5 100644
--- a/cmake/PackageConfig.cmake.in
+++ b/cmake/PackageConfig.cmake.in
@@ -9,16 +9,25 @@ include("${CMAKE_CURRENT_LIST_DIR}/@PROJECT_NAME@-targets.cmake")
 
 include(CMakeFindDependencyMacro)
 
-# ON/OFF implies ip was compiled with/without OPENMP
+find_dependency(sp CONFIG)
+
 if(@OPENMP@)
   find_dependency(OpenMP COMPONENTS Fortran)
 endif()
 
-find_dependency(sp CONFIG)
+# The target name needs to be one that's built, even if the dependent
+# build does not use that version.
+if(@BUILD_4@)
+  set(precision 4)
+elseif(@BUILD_D@)
+  set(precision d)
+elseif(@BUILD_8@)
+  set(precision 8)
+endif()
 
-get_target_property(@PROJECT_NAME@_BUILD_TYPES @PROJECT_NAME@::@PROJECT_NAME@_4 IMPORTED_CONFIGURATIONS)
+get_target_property(@PROJECT_NAME@_BUILD_TYPES @PROJECT_NAME@::@PROJECT_NAME@_${precision} IMPORTED_CONFIGURATIONS)
 
 check_required_components("@PROJECT_NAME@")
 
-get_target_property(location @PROJECT_NAME@::@PROJECT_NAME@_4 LOCATION)
+get_target_property(location @PROJECT_NAME@::@PROJECT_NAME@_${precision} LOCATION)
 message(STATUS "Found @PROJECT_NAME@: ${location} (found version \"@PROJECT_VERSION@\")")