refactor: replace BunProc with Npm module using @npmcli/arborist (#18308)

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>
Co-authored-by: Brendan Allan <git@brendonovich.dev>
Co-authored-by: Aiden Cline <aidenpcline@gmail.com>

packages/opencode/src/config/config.ts

@@ -20,7 +20,6 @@ import {
 } from "jsonc-parser"
 import { Instance, type InstanceContext } from "../project/instance"
 import { LSPServer } from "../lsp/server"
-import { BunProc } from "@/bun"
 import { Installation } from "@/installation"
 import { ConfigMarkdown } from "./markdown"
 import { constants, existsSync } from "fs"
@@ -28,20 +27,18 @@ import { Bus } from "@/bus"
 import { GlobalBus } from "@/bus/global"
 import { Event } from "../server/event"
 import { Glob } from "../util/glob"
-import { PackageRegistry } from "@/bun/registry"
-import { online, proxied } from "@/util/network"
 import { iife } from "@/util/iife"
 import { Account } from "@/account"
 import { isRecord } from "@/util/record"
 import { ConfigPaths } from "./paths"
 import { Filesystem } from "@/util/filesystem"
-import { Process } from "@/util/process"
 import { AppFileSystem } from "@/filesystem"
 import { InstanceState } from "@/effect/instance-state"
 import { makeRuntime } from "@/effect/run-service"
 import { Duration, Effect, Layer, Option, ServiceMap } from "effect"
 import { Flock } from "@/util/flock"
 import { isPathPluginSpec, parsePluginSpecifier, resolvePathPluginTarget } from "@/plugin/shared"
+import { Npm } from "@/npm"
 
 export namespace Config {
   const ModelId = z.string().meta({ $ref: "https://models.dev/model-schema.json#/$defs/Model" })
@@ -90,8 +87,7 @@ export namespace Config {
   }
 
   export async function installDependencies(dir: string, input?: InstallInput) {
-    if (!(await needsInstall(dir))) return
-
+    if (!(await isWritable(dir))) return
     await using _ = await Flock.acquire(`config-install:${Filesystem.resolve(dir)}`, {
       signal: input?.signal,
       onWait: (tick) =>
@@ -102,13 +98,10 @@ export namespace Config {
           waited: tick.waited,
         }),
     })
-
     input?.signal?.throwIfAborted()
-    if (!(await needsInstall(dir))) return
 
     const pkg = path.join(dir, "package.json")
     const target = Installation.isLocal() ? "*" : Installation.VERSION
-
     const json = await Filesystem.readJson<{ dependencies?: Record<string, string> }>(pkg).catch(() => ({
       dependencies: {},
     }))
@@ -126,49 +119,7 @@ export namespace Config {
         ["node_modules", "package.json", "package-lock.json", "bun.lock", ".gitignore"].join("\n"),
       )
     }
-
-    // Bun can race cache writes on Windows when installs run in parallel across dirs.
-    // Serialize installs globally on win32, but keep parallel installs on other platforms.
-    await using __ =
-      process.platform === "win32"
-        ? await Flock.acquire("config-install:bun", {
-            signal: input?.signal,
-          })
-        : undefined
-
-    await BunProc.run(
-      [
-        "install",
-        // TODO: get rid of this case (see: https://github.com/oven-sh/bun/issues/19936)
-        ...(proxied() || process.env.CI ? ["--no-cache"] : []),
-      ],
-      {
-        cwd: dir,
-        abort: input?.signal,
-      },
-    ).catch((err) => {
-      if (err instanceof Process.RunFailedError) {
-        const detail = {
-          dir,
-          cmd: err.cmd,
-          code: err.code,
-          stdout: err.stdout.toString(),
-          stderr: err.stderr.toString(),
-        }
-        if (Flag.OPENCODE_STRICT_CONFIG_DEPS) {
-          log.error("failed to install dependencies", detail)
-          throw err
-        }
-        log.warn("failed to install dependencies", detail)
-        return
-      }
-
-      if (Flag.OPENCODE_STRICT_CONFIG_DEPS) {
-        log.error("failed to install dependencies", { dir, error: err })
-        throw err
-      }
-      log.warn("failed to install dependencies", { dir, error: err })
-    })
+    await Npm.install(dir)
   }
 
   async function isWritable(dir: string) {
@@ -180,42 +131,6 @@ export namespace Config {
     }
   }
 
-  export async function needsInstall(dir: string) {
-    // Some config dirs may be read-only.
-    // Installing deps there will fail; skip installation in that case.
-    const writable = await isWritable(dir)
-    if (!writable) {
-      log.debug("config dir is not writable, skipping dependency install", { dir })
-      return false
-    }
-
-    const mod = path.join(dir, "node_modules", "@opencode-ai", "plugin")
-    if (!existsSync(mod)) return true
-
-    const pkg = path.join(dir, "package.json")
-    const pkgExists = await Filesystem.exists(pkg)
-    if (!pkgExists) return true
-
-    const parsed = await Filesystem.readJson<{ dependencies?: Record<string, string> }>(pkg).catch(() => null)
-    const dependencies = parsed?.dependencies ?? {}
-    const depVersion = dependencies["@opencode-ai/plugin"]
-    if (!depVersion) return true
-
-    const targetVersion = Installation.isLocal() ? "latest" : Installation.VERSION
-    if (targetVersion === "latest") {
-      if (!online()) return false
-      const stale = await PackageRegistry.isOutdated("@opencode-ai/plugin", depVersion, dir)
-      if (!stale) return false
-      log.info("Cached version is outdated, proceeding with install", {
-        pkg: "@opencode-ai/plugin",
-        cachedVersion: depVersion,
-      })
-      return true
-    }
-    if (depVersion === targetVersion) return false
-    return true
-  }
-
   function rel(item: string, patterns: string[]) {
     const normalizedItem = item.replaceAll("\\", "/")
     for (const pattern of patterns) {
@@ -1355,8 +1270,7 @@ export namespace Config {
             }
 
             const dep = iife(async () => {
-              const stale = await needsInstall(dir)
-              if (stale) await installDependencies(dir)
+              await installDependencies(dir)
             })
             void dep.catch((err) => {
               log.warn("background dependency install failed", { dir, error: err })