Add support for backward compatibility

action.yml

@@ -273,6 +273,7 @@ runs:
           inputs.terraform-cache-dir }}
         echo "TF_PLUGIN_CACHE_DIR=$CACHE_DIR" >> $GITHUB_ENV
         echo "TG_PROVIDER_CACHE_DIR=$CACHE_DIR" >> $GITHUB_ENV
+        echo "TERRAGRUNT_PROVIDER_CACHE_DIR=$CACHE_DIR" >> $GITHUB_ENV
 
     - uses: actions/cache/restore@v4
       id: restore_cache
@@ -401,6 +402,7 @@ runs:
         NO_BACKEND: ${{ inputs.no-backend }}
         DEBUG: 'true'
         TG_PROVIDER_CACHE: ${{ inputs.cache-dependencies == 'true' && 1 || 0 }}
+        TERRAGRUNT_PROVIDER_CACHE: ${{ inputs.cache-dependencies == 'true' && 1 || 0 }}
         DIGGER_RUN_SPEC: ${{inputs.digger-spec}}
       run: |
           if [[ ${{ inputs.ee }} == "true" ]]; then
@@ -440,6 +442,7 @@ runs:
         INPUT_DRIFT_DETECTION_SLACK_NOTIFICATION_URL: ${{ inputs.drift-detection-slack-notification-url }}
         NO_BACKEND: ${{ inputs.no-backend }}
         TG_PROVIDER_CACHE: ${{ inputs.cache-dependencies == 'true' && 1 || 0 }}
+        TERRAGRUNT_PROVIDER_CACHE: ${{ inputs.cache-dependencies == 'true' && 1 || 0 }}
         DIGGER_RUN_SPEC: ${{inputs.digger-spec}}
       id: digger
       shell: bash

cli/pkg/digger/digger.go

@@ -69,7 +69,8 @@ func RunJobs(jobs []orchestrator.Job, prService ci.PullRequestService, orgServic
 	defer reporter.Flush()
 
 	log.Printf("Info: [TF_PLUGIN_CACHE_DIR=%v] ", os.Getenv("TF_PLUGIN_CACHE_DIR"))
-	log.Printf("Info: [TG_PROVIDER_CACHE_DIR=%v]", os.Getenv("TG_PROVIDER_CACHE_DIR"))
+	log.Printf("Info: [TG_PROVIDER_CACHE_DIR=%v] ", os.Getenv("TG_PROVIDER_CACHE_DIR"))
+	log.Printf("Info: [TERRAGRUNT_PROVIDER_CACHE_DIR=%v] ", os.Getenv("TERRAGRUNT_PROVIDER_CACHE_DIR"))
 
 	runStartedAt := time.Now()
 

libs/execution/terragrunt.go

@@ -104,6 +104,9 @@ func (terragrunt Terragrunt) runTerragruntCommand(command string, printOutputToS
 	env := os.Environ()
 	env = append(env, "TF_CLI_ARGS=-no-color")
 	env = append(env, "TF_IN_AUTOMATION=true")
+	env = append(env, "TERRAGRUNT_FORWARD_TF_STDOUT=1")
+	env = append(env, "TERRAGRUNT_NO_COLOR=true")
+	env = append(env, "TERRAGRUNT_NON_INTERACTIVE=true")
 	env = append(env, "TG_NO_COLOR=true")
 	env = append(env, "TG_NON_INTERACTIVE=true")
 	env = append(env, "TG_TF_FORWARD_STDOUT=true")