Using a nextflow module with the same name as a nextflow operator causes recursion.

src/test/resources/testnextflowvdsl3/src/concat/config.vsh.yaml

@@ -0,0 +1,20 @@
+functionality:
+  name: concat
+  arguments:
+    - name: "--input"
+      type: file
+      required: true
+      example: input.txt
+    - name: "--output"
+      type: file
+      required: true
+      direction: output
+      example: output.txt
+  resources:
+    - type: bash_script
+      path: script.sh
+platforms:
+  - type: native
+  - type: docker
+    image: nextflow/bash:latest
+  - type: nextflow

src/test/resources/testnextflowvdsl3/src/concat/script.sh

@@ -0,0 +1 @@
+cp "$par_input" "$par_output"

src/test/resources/testnextflowvdsl3/src/test_wfs/operator_conflict/config.vsh.yaml

@@ -0,0 +1,13 @@
+functionality:
+  name: operator_conflict
+  namespace: test_wfs
+  resources:
+    - type: nextflow_script
+      path: main.nf
+      entrypoint: base
+    # TODO: make absolute when the ns build uses the right CWD
+    - path: ../../../resources
+  dependencies:
+    - name: concat
+platforms:
+  - type: nextflow

src/test/resources/testnextflowvdsl3/src/test_wfs/operator_conflict/main.nf

@@ -0,0 +1,30 @@
+
+workflow base {
+  take: input_ch
+  main:
+
+  // generate list from 0 to 1
+  ch = Channel.fromList(0..1)
+    | map { num ->
+      // create temporary file
+      file = tempFile()
+      file.write("num: $num")
+
+      ["num$num", [ num: num, file: file ]]
+    }
+    | concat.run(
+      fromState: ["input": "input"],
+      toState: {id, output, state -> 
+        def newState = [
+          "step1_output": output.output, 
+          "num": state.num,
+          "file": state.file
+        ]
+        return newState
+      }
+    )
+
+
+  emit:
+  input_ch
+}

src/test/scala/io/viash/runners/nextflow/NextflowScriptTest.scala

@@ -122,6 +122,18 @@ class NextflowScriptTest extends AnyFunSuite with BeforeAndAfterAll {
     assert(exitCode == 0, s"\nexit code was $exitCode\nStd output:\n$stdOut\nStd error:\n$stdErr")
   }
 
+  test("Test conflicts with nextlow operator", DockerTest, NextflowTest) {
+    val (exitCode, stdOut, stdErr) = NextflowTestHelper.run(
+      mainScript = "target/nextflow/test_wfs/operator_conflict/main.nf",
+      args = List(
+        "--publish_dir", "output"
+      ),
+      cwd = tempFolFile
+    )
+
+    assert(exitCode == 0, s"\nexit code was $exitCode\nStd output:\n$stdOut\nStd error:\n$stdErr")
+  }
+
 
   test("Test nested workflows", DockerTest, NextflowTest) {
     val (exitCode, stdOut, stdErr) = NextflowTestHelper.run(