Avoid bare using Foo

Author: DilumAluthge

Diff for: action.yml

@@ -3,7 +3,7 @@ description: 'Evaluate number of invalidations'
 
 inputs:
   test_script:
-    description: 'Script to test for invalidations. Defaults to `using Package`'
+    description: 'Script to test for invalidations. Defaults to `import Package`'
     required: false
     default: ''
 
@@ -25,7 +25,7 @@ runs:
           PACKAGENAME=${REPONAME%.jl}
           echo "packagename=$PACKAGENAME" >> $GITHUB_OUTPUT
           if [[ '${{ inputs.test_script }}' == '' ]]; then
-            TESTSCRIPT="using ${PACKAGENAME}"
+            TESTSCRIPT="import ${PACKAGENAME}"
           else
             TESTSCRIPT=${{ inputs.test_script }}
           fi
@@ -45,18 +45,18 @@ runs:
     - name: Load package on branch
       id: invs
       run: |
-        using SnoopCompileCore
+        using SnoopCompileCore: @snoopr
         invalidations = @snoopr begin ${{ steps.info.outputs.testscript }} end
         
-        using SnoopCompile
+        using SnoopCompile: SnoopCompile, uinvalidated
         inv_owned = length(filtermod(${{ steps.info.outputs.packagename }}, invalidation_trees(invalidations)))
         inv_total = length(uinvalidated(invalidations))
         inv_deps = inv_total - inv_owned
         
         @show inv_total, inv_deps
 
         # Report invalidations summary:
-        using PrettyTables  # needed for `report_invalidations` to be defined
+        import PrettyTables  # needed for `report_invalidations` to be defined
         SnoopCompile.report_invalidations(;
              invalidations,
              process_filename = x -> last(split(x, ".julia/packages/")),