fix(windows): revert unsafe PowerShell alias probing

.changeset/restore-safe-powershell-detection.md

@@ -0,0 +1,6 @@
+---
+"@kilocode/cli": patch
+"kilo-code": patch
+---
+
+Prevent inaccessible Windows PowerShell execution aliases from blocking CLI and extension startup.

packages/core/src/kilocode/powershell.ts

@@ -1,25 +1,7 @@
-import { statSync } from "fs"
-import path from "path"
-import { which } from "../util/which"
-
 export function args(command: string) {
   return ["-NoLogo", "-NoProfile", "-NonInteractive", "-Command", script(command)]
 }
 
-export const locations = (env: NodeJS.ProcessEnv = process.env) =>
-  [
-    env["ProgramFiles"] && path.join(env["ProgramFiles"], "PowerShell", "7"),
-    env["ProgramFiles(x86)"] && path.join(env["ProgramFiles(x86)"], "PowerShell", "7"),
-    env["LOCALAPPDATA"] && path.join(env["LOCALAPPDATA"], "Microsoft", "WindowsApps"),
-  ]
-    .filter((item): item is string => Boolean(item))
-    .map((root) => path.join(root, "pwsh.exe"))
-
-export const probe = (env: NodeJS.ProcessEnv = process.env) =>
-  locations(env).filter((file) => statSync(file, { throwIfNoEntry: false })?.isFile())
-
-export const pwsh = (env: NodeJS.ProcessEnv = process.env) => which("pwsh", env) ?? probe(env)[0]
-
 const setup = `[Console]::InputEncoding = [System.Text.UTF8Encoding]::new($false);
 [Console]::OutputEncoding = [System.Text.UTF8Encoding]::new($false);
 $OutputEncoding = [Console]::OutputEncoding;
@@ -141,4 +123,4 @@ function block(command: string, start: number, open: string, close: string) {
   }
 }
 
-export const PowerShell = { args, locations, probe, pwsh }
+export const PowerShell = { args }

packages/core/src/shell.ts

@@ -99,8 +99,7 @@ function resolve(file: string) {
 function win() {
   return Array.from(
     new Set(
-      // kilocode_change - probe known PowerShell 7 install locations so legacy 5.1 is not picked when pwsh is off PATH
-      [PowerShell.pwsh(), which("powershell"), gitbash(), process.env.COMSPEC || "cmd.exe"] // kilocode_change
+      [which("pwsh"), which("powershell"), gitbash(), process.env.COMSPEC || "cmd.exe"]
         .filter((item): item is string => Boolean(item))
         .map(full),
     ),

packages/kilo-vscode/src/agent-manager/SetupScriptRunner.ts

@@ -5,7 +5,6 @@
  * actual execution to an injected RunTask callback (provided by the caller).
  */
 
-import { powershellCommand } from "../util/powershell"
 import { SetupScriptService, type SetupScriptInfo } from "./SetupScriptService"
 
 interface SetupScriptEnvironment {
@@ -32,7 +31,7 @@ function quoteCmdArg(value: string): string {
 export function buildSetupTaskCommand(script: SetupScriptInfo): { command: string; args: string[] } {
   if (script.kind === "powershell") {
     return {
-      command: powershellCommand(),
+      command: "powershell.exe",
       args: ["-NoLogo", "-NoProfile", "-ExecutionPolicy", "Bypass", "-File", script.path],
     }
   }

packages/kilo-vscode/src/agent-manager/run/service.ts

@@ -1,7 +1,6 @@
 import * as fs from "node:fs"
 import * as path from "node:path"
 import { KILO_DIR } from "../constants"
-import { powershellCommand } from "../../util/powershell"
 
 const RUN_SCRIPT_FILENAME = "run-script"
 const RUN_SCRIPT_SHELL_FILENAME = "run-script.sh"
@@ -86,7 +85,7 @@ function validated(file: string, dir: string): boolean {
 export function buildRunTaskCommand(script: RunScriptInfo): { command: string; args: string[] } {
   if (script.kind === "powershell") {
     return {
-      command: powershellCommand(),
+      command: "powershell.exe",
       args: ["-NoLogo", "-NoProfile", "-ExecutionPolicy", "Bypass", "-File", script.path],
     }
   }

packages/kilo-vscode/tests/unit/run-script-service.test.ts

@@ -3,7 +3,6 @@ import * as fs from "node:fs"
 import * as os from "node:os"
 import * as path from "node:path"
 import { buildRunTaskCommand, RunScriptService } from "../../src/agent-manager/run/service"
-import { powershellCommand } from "../../src/util/powershell"
 
 function tmpdir(): string {
   return fs.mkdtempSync(path.join(os.tmpdir(), "run-script-service-test-"))
@@ -60,7 +59,7 @@ describe("RunScriptService", () => {
       args: ["/tmp/run-script"],
     })
     expect(buildRunTaskCommand({ path: "C:\\repo\\.kilo\\run-script.ps1", kind: "powershell" })).toEqual({
-      command: powershellCommand(),
+      command: "powershell.exe",
       args: ["-NoLogo", "-NoProfile", "-ExecutionPolicy", "Bypass", "-File", "C:\\repo\\.kilo\\run-script.ps1"],
     })
     expect(buildRunTaskCommand({ path: "C:\\repo path\\.kilo\\run-script.cmd", kind: "cmd" })).toEqual({

packages/opencode/src/kilocode/background-process/index.ts

@@ -7,7 +7,6 @@ import { Instance, type InstanceContext } from "@/kilocode/instance"
 import { KiloShutdown } from "@/kilocode/cli/shutdown"
 import { model as modelEnv } from "@/kilocode/process/env"
 import { SessionID } from "@/session/schema"
-import { PowerShell } from "@/kilocode/shell/shell"
 import { Shell } from "@opencode-ai/core/shell"
 import { ProjectV2 } from "@opencode-ai/core/project"
 import { Process } from "@/util/process"
@@ -33,7 +32,6 @@ import * as Ports from "./ports"
 
 export namespace BackgroundProcess {
   const log = Log.create({ service: "background-process" })
-  const pwsh = PowerShell.pwsh() ?? "powershell.exe"
   const MAX = 200 * 1024
   const KILL_MS = 3_000
   const READY_MS = 30_000
@@ -671,7 +669,7 @@ export namespace BackgroundProcess {
     const token = active.token
     if (!pid || !token) return "unknown"
     const query = `$p=Get-CimInstance Win32_Process -Filter "ProcessId = ${pid}"; if ($p) { [Console]::Out.Write($p.CommandLine) }`
-    const out = await Process.text([pwsh, "-NoProfile", "-NonInteractive", "-Command", query], {
+    const out = await Process.text(["powershell.exe", "-NoProfile", "-NonInteractive", "-Command", query], {
       nothrow: true,
       abort: AbortSignal.timeout(2_000),
       timeout: 2_000,

packages/opencode/src/kilocode/background-process/runner.ts

@@ -1,5 +1,4 @@
 import { KiloPtySelfCommand } from "@/kilocode/pty/self-command"
-import { PowerShell } from "@/kilocode/shell/shell"
 import { Filesystem } from "@/util/filesystem"
 import { Process } from "@/util/process"
 import { isRecord } from "@/util/record"
@@ -12,7 +11,6 @@ export namespace BackgroundProcessRunner {
   const MODE = 0o600
   const MAX = 1024 * 1024
   const KEEP = 200 * 1024
-  const pwsh = PowerShell.pwsh() ?? "powershell.exe"
 
   export type Input = {
     token: string
@@ -98,7 +96,7 @@ export namespace BackgroundProcessRunner {
   async function descendants(root: number, seen: Map<number, string>, active: boolean) {
     const query =
       "Get-CimInstance Win32_Process | Select-Object ProcessId,ParentProcessId,CreationDate | ConvertTo-Json -Compress"
-    const out = await Process.text([pwsh, "-NoProfile", "-NonInteractive", "-Command", query], {
+    const out = await Process.text(["powershell.exe", "-NoProfile", "-NonInteractive", "-Command", query], {
       nothrow: true,
       abort: AbortSignal.timeout(2_000),
       timeout: 2_000,

packages/opencode/src/kilocode/shell/shell.ts

@@ -1 +1 @@
-export { args, PowerShell, pwsh } from "@opencode-ai/core/kilocode/powershell"
+export { args, PowerShell } from "@opencode-ai/core/kilocode/powershell"