[ci] big experimentation no shot this works first time

.github/actions/run_tests.yml

@@ -0,0 +1,23 @@
+name: "run-tests"
+description: "Download a previously-generated psyc and try to compile some stuff with it."
+
+inputs:
+  build_config:
+    required: true
+    type: string
+  compiler:
+    required: true
+    type: string
+
+runs:
+  using: "composite"
+  steps:
+    - uses: actions/checkout@v4
+
+    - name: Retrieve psyc
+      uses: actions/download-artifact@v4
+      with:
+        name: psyc_${{ inputs.compiler }}_${{ inputs.build_config }}
+
+    - name: scratchpad.psy
+      run: psyc -v ./samples/scratchpad.psy --dump-ast --dump-ir

.github/workflows/build_linux.yml

@@ -44,7 +44,7 @@ jobs:
           path: ./cpp/build/ci_${{ matrix.build_config }}/psyc
 
       - name: 'Run Tests'
-        uses: Harrand/psyc/.github/workflows/build_linux.yml@master
+        uses: ./.github/actions/run_tests.yml
         with:
           compiler: ${{ matrix.compiler }}
           build_config: ${{ matrix.build_config }}