fix(core): ensure no tui on single tasks (#33910)

AgentEnder · FrozenPandaz · commit 16ba3ad931b2 · 2025-12-17T23:04:08.000-05:00
## Current Behavior
The tui shouldn't show for single tasks

## Expected Behavior
The tui isn't shown for single tasks

## Related Issue(s)
&lt;!-- Please link the issue being fixed so it gets closed when this is
merged. --&gt;

Fixes #
diff --git a/packages/nx/src/tasks-runner/is-tui-enabled.ts b/packages/nx/src/tasks-runner/is-tui-enabled.ts
@@ -4,6 +4,8 @@ import { NxArgs } from '../utils/command-line-utils';
 import { isCI } from '../utils/is-ci';
 import { logger } from '../utils/logger';
 
+export const ORIGINAL_TUI_ENV_VALUE = process.env.NX_TUI;
+
 /**
  * @returns If tui is enabled
  */
diff --git a/packages/nx/src/tasks-runner/run-command.ts b/packages/nx/src/tasks-runner/run-command.ts
@@ -40,7 +40,7 @@ import {
 } from '../utils/sync-generators';
 import { workspaceRoot } from '../utils/workspace-root';
 import { createTaskGraph } from './create-task-graph';
-import { isTuiEnabled } from './is-tui-enabled';
+import { isTuiEnabled, ORIGINAL_TUI_ENV_VALUE } from './is-tui-enabled';
 import {
   CompositeLifeCycle,
   LifeCycle,
@@ -94,8 +94,8 @@ async function getTerminalOutputLifeCycle(
 
   const isRunOne = initiatingProject != null;
 
-  if (tasks.length === 1) {
-    process.env.NX_TUI ??= 'false';
+  if (tasks.length === 1 && !ORIGINAL_TUI_ENV_VALUE) {
+    process.env.NX_TUI = 'false';
   }
 
   if (isTuiEnabled()) {
