Remove Python setup and fix multiline prerequisites output (#3)

.github/workflows/ci.yml

@@ -31,5 +31,5 @@ jobs:
         flags: --recursive
     - name: Check recursive prerequisites
       run: |
-        test "${{ steps.recursive-prerequisites.outputs.prerequisites }}" = "preprereq"
+        test "${{ steps.recursive-prerequisites.outputs.prerequisites }}" = "preprereq1 preprereq2"
         echo ${{ steps.recursive-prerequisites.outputs.hash }}

action.yml

@@ -26,19 +26,15 @@ outputs:
 runs:
   using: "composite"
   steps:
-    - name: Install Python
-      uses: actions/setup-python@v4
-      with:
-        python-version: '3.10'
     - name: Install Dependencies
       shell: bash
-      run: pip install -r requirements.txt
+      run: python -m pip install -r ${GITHUB_ACTION_PATH}/requirements.txt
     - name: List Make Prerequisites
       id: list-make-prerequisites
       shell: bash
       working-directory: ${{ inputs.working-directory }}
       run: |
         hash=$(${GITHUB_ACTION_PATH}/list-make-prerequisites.py ${{ inputs.target }} ${{ inputs.flags }} --hash 2>/dev/null)
-        prerequisites=$(${GITHUB_ACTION_PATH}/list-make-prerequisites.py ${{ inputs.target }} ${{ inputs.flags }} 2>/dev/null)
+        prerequisites=$(${GITHUB_ACTION_PATH}/list-make-prerequisites.py ${{ inputs.target }} ${{ inputs.flags }} 2>/dev/null | xargs)
         echo "hash=$hash" >> $GITHUB_OUTPUT
         echo "prerequisites=$prerequisites" >> $GITHUB_OUTPUT

list-make-prerequisites.py

@@ -122,8 +122,8 @@ def list_prerequisites(target, recursive=False, debug=False):
         # Find all leaf prerequisites
         leaf_prerequisites = [node.name for node in root.descendants if node.is_leaf]
 
-        # Remove repetitions
-        leaf_prerequisites = list(set(leaf_prerequisites))
+        # Remove repetitions and sort for consistency
+        leaf_prerequisites = sorted(list(set(leaf_prerequisites)))
 
         # Return prerequisites
         return leaf_prerequisites
@@ -158,7 +158,7 @@ def hash_files(file_list):
 
     if args.hash:
         # Print a hash of the prerequisites' contents
-        hash_value = hash_files(sorted(prerequisites))
+        hash_value = hash_files(prerequisites)
         print(hash_value)
     else:
         # Print the list of prerequisites

test/Makefile

@@ -1,5 +1,6 @@
 test: prereq
 	cp $< $@
 
-prereq: preprereq
+prereq: preprereq1 preprereq2
 	cp $< $@
+	cat preprereq2 >> $@

test/preprereq1

@@ -0,0 +1 @@
+preprereq1

test/preprereq2

@@ -0,0 +1 @@
+preprereq2