feat: explicitly install poetry-plugin-export (#3)

action.yml

@@ -4,15 +4,15 @@ inputs:
   without-hashes:
     description: Export requirements.txt file without-hashes
     required: false
-    default: 'true'
+    default: "true"
   outfile-name:
     description: Name of the output file
     required: false
-    default: 'requirements.txt'
+    default: "requirements.txt"
   args:
     description: Additional args to pass to poetry
     required: false
-    default: ''
+    default: ""
 outputs:
   custom-file-name:
     description: Name of the output file
@@ -26,14 +26,18 @@ runs:
         python -m pip install poetry
       shell: bash
 
+    - run: |-
+        poetry self add poetry-plugin-export
+      shell: bash
+
     - if: inputs.without-hashes == 'true'
       run: |-
-          poetry export -f requirements.txt ${{ inputs.args }} --without-hashes --output ${{ inputs.outfile-name }}
+        poetry export -f requirements.txt ${{ inputs.args }} --without-hashes --output ${{ inputs.outfile-name }}
       shell: bash
 
     - if: inputs.without-hashes == 'false'
       run: |-
-          poetry export -f requirements.txt ${{ inputs.args }} --output ${{ inputs.outfile-name }}
+        poetry export -f requirements.txt ${{ inputs.args }} --output ${{ inputs.outfile-name }}
       shell: bash
 
 branding: