voidzero-dev · fengmk2 · Feb 27, 2026 · Feb 25, 2026 · Feb 25, 2026 · Feb 26, 2026
diff --git a/bench/benches/auto_install.sh b/bench/benches/auto_install.sh
diff --git a/docs/vite/guide/cli.md b/docs/vite/guide/cli.md
@@ -367,12 +367,11 @@ vp cache clean
 
 ### Environment Variables
 
-| Variable                    | Description                                             |
-| --------------------------- | ------------------------------------------------------- |
-| `VITE_LOG`                  | Set logging level (e.g., `VITE_LOG=debug`)              |
-| `VITE_DISABLE_AUTO_INSTALL` | Set to `1` to disable automatic dependency installation |
-| `VITE_TASK_EXECUTION_ENV`   | Internal: indicates running inside vite task            |
-| `VITE_TASK_EXECUTION_ID`    | Internal: unique ID for task execution                  |
+| Variable                  | Description                                  |
+| ------------------------- | -------------------------------------------- |
+| `VITE_LOG`                | Set logging level (e.g., `VITE_LOG=debug`)   |
+| `VITE_TASK_EXECUTION_ENV` | Internal: indicates running inside vite task |
+| `VITE_TASK_EXECUTION_ID`  | Internal: unique ID for task execution       |
 
 ### Execution Modes
 

diff --git a/packages/cli/binding/src/cli.rs b/packages/cli/binding/src/cli.rs
@@ -644,32 +644,6 @@ impl UserConfigLoader for VitePlusConfigLoader {
     }
 }
 
-/// Create auto-install synthetic plan request
-async fn create_install_synthetic_request(
-    cwd: &AbsolutePathBuf,
-) -> Result<SyntheticPlanRequest, Error> {
-    let package_manager = vite_install::PackageManager::builder(cwd).build_with_default().await?;
-    let resolve_command = package_manager.resolve_install_command(&vec![]);
-
-    let mut envs: FxHashMap<Arc<OsStr>, Arc<OsStr>> = std::env::vars_os()
-        .map(|(k, v)| (Arc::from(k.as_os_str()), Arc::from(v.as_os_str())))
-        .collect();
-
-    for (k, v) in resolve_command.envs {
-        envs.insert(Arc::from(OsStr::new(&k)), Arc::from(OsStr::new(&v)));
-    }
-
-    Ok(SyntheticPlanRequest {
-        program: Arc::<OsStr>::from(OsStr::new(&resolve_command.bin_path).to_os_string()),
-        args: resolve_command.args.into_iter().map(Str::from).collect(),
-        cache_config: UserCacheConfig::with_config(EnabledCacheConfig {
-            envs: None,
-            pass_through_envs: None,
-        }),
-        envs: Arc::new(envs),
-    })
-}
-
 /// Execute a synthesizable subcommand directly (not through vite-task Session).
 /// No caching, no task graph, no dependency resolution.
 async fn execute_direct_subcommand(
@@ -766,21 +740,6 @@ async fn execute_vite_task_command(
         user_config_loader: &mut config_loader,
     })?;
 
-    // Auto-install (using Session::exec)
-    if env::var_os("VITE_DISABLE_AUTO_INSTALL") != Some("1".into()) {
-        if let Ok(install_request) = create_install_synthetic_request(&cwd).await {
-            let cache_key: Arc<[Str]> = vec![Str::from("install")].into();
-            let status = session
-                .execute_synthetic(install_request, cache_key, true)
-                .await
-                .map_err(|e| Error::Anyhow(e))?;
-            if status != ExitStatus::SUCCESS {
-                command_handler.cleanup_temp_files().await;
-                return Ok(status);
-            }
-        }
-    }
-
     // Main execution (consumes session)
     let result = session.main(command).await.map_err(|e| Error::Anyhow(e));
 

diff --git a/packages/cli/snap-tests-global/command-add-npm10-with-workspace/steps.json b/packages/cli/snap-tests-global/command-add-npm10-with-workspace/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp add testnpm2 -D -w -- --no-audit && cat package.json packages/app/package.json packages/utils/package.json # should add package to workspace root",
     "vp add @vite-plus-test/utils --workspace -- --no-audit && cat package.json packages/app/package.json packages/utils/package.json # should add @vite-plus-test/utils to workspace root",

diff --git a/packages/cli/snap-tests-global/command-add-npm10/steps.json b/packages/cli/snap-tests-global/command-add-npm10/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp add --help # should show help",
     "vp add testnpm2 -D -- --no-audit && cat package.json # should add package as dev dependencies",

diff --git a/packages/cli/snap-tests-global/command-add-npm11-with-workspace/steps.json b/packages/cli/snap-tests-global/command-add-npm11-with-workspace/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp add testnpm2 -D -w -- --no-audit && cat package.json packages/app/package.json packages/utils/package.json # should add package to workspace root",
     "vp add @vite-plus-test/utils --workspace -- --no-audit && cat package.json packages/app/package.json packages/utils/package.json # should add @vite-plus-test/utils to workspace root",

diff --git a/packages/cli/snap-tests-global/command-add-npm11/steps.json b/packages/cli/snap-tests-global/command-add-npm11/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp add --help # should show help",
     "vp add testnpm2 -D -- --no-audit && cat package.json # should add package as dev dependencies",

diff --git a/packages/cli/snap-tests-global/command-add-pnpm10-with-workspace/steps.json b/packages/cli/snap-tests-global/command-add-pnpm10-with-workspace/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp add testnpm2 -D -w && cat package.json # should add package to workspace root",
     "vp add @vite-plus-test/utils --workspace && cat package.json # should add @vite-plus-test/utils to workspace root",

diff --git a/packages/cli/snap-tests-global/command-add-pnpm10/steps.json b/packages/cli/snap-tests-global/command-add-pnpm10/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp add --help # should show help",
     "vp add # should error because no packages specified",

diff --git a/packages/cli/snap-tests-global/command-add-pnpm9-with-workspace/steps.json b/packages/cli/snap-tests-global/command-add-pnpm9-with-workspace/steps.json
@@ -1,7 +1,6 @@
 {
   "ignoredPlatforms": ["win32"],
   "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1",
     "NODE_OPTIONS": "--no-deprecation"
   },
   "commands": [

diff --git a/packages/cli/snap-tests-global/command-add-pnpm9/steps.json b/packages/cli/snap-tests-global/command-add-pnpm9/steps.json
@@ -1,7 +1,6 @@
 {
   "ignoredPlatforms": ["win32"],
   "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1",
     "NODE_OPTIONS": "--no-deprecation"
   },
   "commands": [

diff --git a/packages/cli/snap-tests-global/command-add-yarn4-with-workspace/steps.json b/packages/cli/snap-tests-global/command-add-yarn4-with-workspace/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp add testnpm2 -D -w && cat package.json packages/app/package.json packages/utils/package.json # should add package to workspace root",
     "vp add @vite-plus-test/utils --workspace -w && cat package.json packages/app/package.json packages/utils/package.json # should add @vite-plus-test/utils to workspace root",

diff --git a/packages/cli/snap-tests-global/command-add-yarn4/steps.json b/packages/cli/snap-tests-global/command-add-yarn4/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp add --help # should show help",
     "vp add testnpm2 -D && cat package.json # should add package as dev dependencies",

diff --git a/packages/cli/snap-tests-global/command-cache-npm10/steps.json b/packages/cli/snap-tests-global/command-cache-npm10/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp pm cache dir # should show cache directory (uses npm config get cache)",
     "vp pm cache path # should show cache path (alias for dir, uses npm config get cache)"

diff --git a/packages/cli/snap-tests-global/command-cache-pnpm10/steps.json b/packages/cli/snap-tests-global/command-cache-pnpm10/steps.json
@@ -1,7 +1,4 @@
 {
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp pm cache --help # should show help",
     "vp pm cache dir > /dev/null # should show cache directory (uses pnpm store path)",

diff --git a/packages/cli/snap-tests-global/command-cache-yarn4/steps.json b/packages/cli/snap-tests-global/command-cache-yarn4/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32", "darwin"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp pm cache dir # should show cache directory (uses yarn config get cacheFolder)",
     "vp pm cache path # should show cache path (alias for dir, uses yarn config get cacheFolder)"

diff --git a/packages/cli/snap-tests-global/command-config-npm10/steps.json b/packages/cli/snap-tests-global/command-config-npm10/steps.json
@@ -1,7 +1,4 @@
 {
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "# vite pm config set vite-plus-pm-config-test-key test-value --location project # npm set will check valid keys start from npm v9, see https://github.com/npm/cli/issues/5852",
     "vp pm config get vite-plus-pm-config-test-key --location project # should get config value from project scope",

diff --git a/packages/cli/snap-tests-global/command-config-pnpm10/steps.json b/packages/cli/snap-tests-global/command-config-pnpm10/steps.json
@@ -1,7 +1,4 @@
 {
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp pm config --help # should show help",
     "vp pm config list --location project > /dev/null # should list all project configuration",

diff --git a/packages/cli/snap-tests-global/command-config-yarn1/steps.json b/packages/cli/snap-tests-global/command-config-yarn1/steps.json
@@ -1,6 +1,5 @@
 {
   "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1",
     "NODE_OPTIONS": "--no-deprecation"
   },
   "commands": [

diff --git a/packages/cli/snap-tests-global/command-config-yarn4/steps.json b/packages/cli/snap-tests-global/command-config-yarn4/steps.json
@@ -1,7 +1,4 @@
 {
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp pm config set vite-plus-pm-config-test-key test-value --location project # should set config value in project scope",
     "vp pm config get vite-plus-pm-config-test-key --location project # should get config value from project scope",

diff --git a/packages/cli/snap-tests-global/command-dedupe-npm10/steps.json b/packages/cli/snap-tests-global/command-dedupe-npm10/steps.json
@@ -1,7 +1,4 @@
 {
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp dedupe && cat package.json # should dedupe dependencies",
     "vp dedupe --check && cat package.json # should check if deduplication would make changes",

diff --git a/packages/cli/snap-tests-global/command-dedupe-pnpm10/steps.json b/packages/cli/snap-tests-global/command-dedupe-pnpm10/steps.json
@@ -1,7 +1,4 @@
 {
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp dedupe --help # should show help",
     "vp dedupe && cat package.json # should dedupe dependencies",

diff --git a/packages/cli/snap-tests-global/command-dedupe-yarn4/steps.json b/packages/cli/snap-tests-global/command-dedupe-yarn4/steps.json
@@ -1,7 +1,4 @@
 {
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp dedupe && cat package.json # should dedupe dependencies",
     "vp dedupe --check && cat package.json # should check if deduplication would make changes",

diff --git a/packages/cli/snap-tests-global/command-dlx-npm10/steps.json b/packages/cli/snap-tests-global/command-dlx-npm10/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp dlx --help # should show help message",
     "vp dlx -s cowsay hello # should run cowsay with npm exec",

diff --git a/packages/cli/snap-tests-global/command-dlx-pnpm10/steps.json b/packages/cli/snap-tests-global/command-dlx-pnpm10/steps.json
@@ -1,7 +1,4 @@
 {
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp dlx --help # should show help message",
     "vp dlx -s cowsay hello # should run cowsay with pnpm dlx",

diff --git a/packages/cli/snap-tests-global/command-dlx-yarn4/steps.json b/packages/cli/snap-tests-global/command-dlx-yarn4/steps.json
@@ -1,7 +1,4 @@
 {
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp dlx --help # should show help message",
     "vp dlx -s cowsay hello # should run cowsay with yarn dlx",

diff --git a/packages/cli/snap-tests-global/command-install-auto-create-package-json/steps.json b/packages/cli/snap-tests-global/command-install-auto-create-package-json/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "test ! -f package.json && echo 'no package.json' # verify no package.json exists",
     "vp install --silent && cat package.json # should auto-create package.json and install",

diff --git a/packages/cli/snap-tests-global/command-install-bug-31/steps.json b/packages/cli/snap-tests-global/command-install-bug-31/steps.json
@@ -1,7 +1,4 @@
 {
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp install --no-frozen-lockfile --silent # install dependencies work",
     "mkdir -p packages/sub-project && echo '{\"name\": \"sub-project\", \"dependencies\": { \"testnpm2\": \"1.0.0\" }}' > packages/sub-project/package.json # create sub project and package.json",

diff --git a/packages/cli/snap-tests-global/command-link-npm10/steps.json b/packages/cli/snap-tests-global/command-link-npm10/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "mkdir -p ../test-lib-npm && echo '{\"name\": \"test-lib-npm\", \"version\": \"1.0.0\"}' > ../test-lib-npm/package.json # create test library",
     "vp link ../test-lib-npm && cat package.json # should link local directory",

diff --git a/packages/cli/snap-tests-global/command-link-pnpm10/steps.json b/packages/cli/snap-tests-global/command-link-pnpm10/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32", "linux"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp link -h # should show help message",
     "vp install # install initial dependencies",

diff --git a/packages/cli/snap-tests-global/command-link-yarn4/steps.json b/packages/cli/snap-tests-global/command-link-yarn4/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "mkdir -p ../test-lib-yarn && echo '{\"name\": \"test-lib-yarn\", \"version\": \"1.0.0\"}' > ../test-lib-yarn/package.json # create test library",
     "vp link ../test-lib-yarn && cat package.json # should link local directory",

diff --git a/packages/cli/snap-tests-global/command-list-npm10-with-workspace/steps.json b/packages/cli/snap-tests-global/command-list-npm10-with-workspace/steps.json
@@ -1,7 +1,4 @@
 {
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp install # should install packages first",
     "vp pm list --json # should list current workspace root dependencies",

diff --git a/packages/cli/snap-tests-global/command-list-npm10/steps.json b/packages/cli/snap-tests-global/command-list-npm10/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp install # should install packages first",
     "vp pm list --json # should list installed packages",

diff --git a/packages/cli/snap-tests-global/command-list-pnpm10-with-workspace/steps.json b/packages/cli/snap-tests-global/command-list-pnpm10-with-workspace/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp install # should install packages first",
     "vp pm list # should list current workspace root dependencies",

diff --git a/packages/cli/snap-tests-global/command-list-pnpm10/steps.json b/packages/cli/snap-tests-global/command-list-pnpm10/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp install # should install packages first",
     "vp pm list --help # should show help",

diff --git a/packages/cli/snap-tests-global/command-list-yarn1/steps.json b/packages/cli/snap-tests-global/command-list-yarn1/steps.json
@@ -1,6 +1,5 @@
 {
   "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1",
     "NODE_OPTIONS": "--no-deprecation"
   },
   "commands": [

diff --git a/packages/cli/snap-tests-global/command-list-yarn4/steps.json b/packages/cli/snap-tests-global/command-list-yarn4/steps.json
@@ -1,6 +1,3 @@
 {
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": ["vp pm list # should show warning that yarn@2+ does not support list command"]
 }
diff --git a/packages/cli/snap-tests-global/command-outdated-npm10-with-workspace/steps.json b/packages/cli/snap-tests-global/command-outdated-npm10-with-workspace/steps.json
@@ -1,8 +1,5 @@
 {
   "ignoredPlatforms": ["win32"],
-  "env": {
-    "VITE_DISABLE_AUTO_INSTALL": "1"
-  },
   "commands": [
     "vp install",
     "vp outdated testnpm2 -w # should outdated in workspace root",