Don't run when the GHC version is not supported

Author: Kleidukos

action.yml

@@ -9,7 +9,7 @@ inputs:
     description: "The file of the expected interface of the package. Generate it yourself with `print-api`."
     required: true
   ghc: 
-    description: "The version of GHC used to compile the project. See the project's README to know which versions are supported."
+    description: "The version of GHC used to compile the project. See the project's README to know which versions are supported. If the version is not supported, it will not run."
     required: true
   version:
     description: "Version of the tool"
@@ -23,23 +23,18 @@ runs:
     - name: Set up the binary
       shell: bash
       run: |
-        wget -q https://github.com/Kleidukos/print-api/releases/download/v0.0.1.0/print-api-0.1.0.0-Linux-static-x86_64.tar.gz
-        tar -xzvf print-api-${{ inputs.version}}-Linux-static-x86_64.tar.gz
-        chmod +x print-api
-
-    - name: Register the library in the package database
-      shell: bash
-      run: |
+        if [[ ${{ inputs.ghc }} =~ ^(9.6.6|9.8.2|9.10.1)$ ]]
+        then 
+          wget -q https://github.com/Kleidukos/print-api/releases/download/v0.0.1.0/print-api-0.1.0.0-Linux-static-x86_64.tar.gz
+          tar -xzvf print-api-${{ inputs.version}}-Linux-static-x86_64.tar.gz
+          chmod +x print-api
           cabal install -j ${{ inputs.package-name }}
-    - name: Dump the actual version
-      shell: bash
-      run: |
-        ./print-api --package-name ${{ inputs.package-name }} --package-db=${{ inputs.package-database }} > actual-interface.txt
-    - name: Perform the diff between the two versions
-      shell: bash
-      run: |
-        diff ${{ inputs.expected-interface }} actual-interface.txt
-          
+          ./print-api --package-name ${{ inputs.package-name }} --package-db=${{ inputs.package-database }} > actual-interface.txt
+          diff ${{ inputs.expected-interface }} actual-interface.txt
+        else
+          echo "GHC version not supported, not running."
+          exit 0
+        fi
 
 branding:
   icon: 'list'