test(cache): run the remote cache e2e tests on Windows

crates/vt_bin/tests/e2e_snapshots/fixtures/remote_cache/snapshots.toml

@@ -1,12 +1,10 @@
 # Cases that use the remote cache backend are ignored because it runs on
-# Node.js. Windows is skipped because the PTY launcher cannot execute pnpm
-# command shims. Whether an upload to the backend is still running when the
-# tasks finish depends on timing, so steps that upload hide the message about
+# Node.js. Whether an upload to the backend is still running when the tasks
+# finish depends on timing, so steps that upload hide the message about
 # pending uploads. The cases that test it stall the uploads instead, with
 # stalled-remote-cache in front of the backend.
 [[e2e]]
 name = "read_write"
-cfg = "not(windows)"
 ignore = true
 steps = [
   { argv = [
@@ -39,7 +37,6 @@ steps = [
 
 [[e2e]]
 name = "read"
-cfg = "not(windows)"
 ignore = true
 steps = [
   { argv = [
@@ -73,7 +70,6 @@ steps = [
 
 [[e2e]]
 name = "restore"
-cfg = "not(windows)"
 ignore = true
 steps = [
   { argv = [
@@ -145,7 +141,6 @@ steps = [
 
 [[e2e]]
 name = "local_and_remote_hits"
-cfg = "not(windows)"
 ignore = true
 steps = [
   { argv = [
@@ -188,7 +183,6 @@ steps = [
 
 [[e2e]]
 name = "fallback"
-cfg = "not(windows)"
 ignore = true
 steps = [
   { argv = [
@@ -228,7 +222,6 @@ steps = [
 
 [[e2e]]
 name = "corrupt_archive"
-cfg = "not(windows)"
 ignore = true
 steps = [
   { argv = [
@@ -280,7 +273,6 @@ steps = [
 
 [[e2e]]
 name = "restore_failure"
-cfg = "not(windows)"
 ignore = true
 steps = [
   { argv = [
@@ -349,6 +341,9 @@ steps = [
 
 [[e2e]]
 name = "pending_uploads"
+# Skipped on Windows, where a milestone is the console title and ConPTY sends
+# only the latest one when it next renders: the proxy's `stalled` milestone for
+# check's upload can replace `uploads-pending`.
 cfg = "not(windows)"
 ignore = true
 steps = [
@@ -562,7 +557,6 @@ steps = [
 
 [[e2e]]
 name = "ctrl_c_during_upload"
-cfg = "not(windows)"
 ignore = true
 steps = [
   { argv = [
@@ -597,7 +591,6 @@ steps = [
 
 [[e2e]]
 name = "fast_fail_during_upload"
-cfg = "not(windows)"
 ignore = true
 steps = [
   { argv = [
@@ -622,6 +615,8 @@ steps = [
 
 [[e2e]]
 name = "hide_pending_uploads"
+# Skipped on Windows, where a milestone is the console title and ConPTY sends
+# it only when it next renders: nothing is printed after `uploads-pending`.
 cfg = "not(windows)"
 ignore = true
 steps = [

crates/vt_bin/tests/e2e_snapshots/fixtures/remote_cache_backend/snapshots.toml

@@ -1,7 +1,5 @@
-# Windows is skipped because the PTY launcher cannot execute pnpm command shims.
 [[e2e]]
 name = "entries_and_associations"
-cfg = "not(windows)"
 ignore = true
 steps = [
   [
@@ -96,7 +94,6 @@ steps = [
 
 [[e2e]]
 name = "blob_replacement"
-cfg = "not(windows)"
 ignore = true
 steps = [
   [
@@ -209,7 +206,6 @@ steps = [
 
 [[e2e]]
 name = "opaque_binary_data"
-cfg = "not(windows)"
 ignore = true
 steps = [
   [
@@ -264,7 +260,6 @@ steps = [
 
 [[e2e]]
 name = "invalid_requests"
-cfg = "not(windows)"
 ignore = true
 steps = [
   [
@@ -433,7 +428,6 @@ steps = [
 
 [[e2e]]
 name = "state_across_invocations"
-cfg = "not(windows)"
 ignore = true
 steps = [
   [

packages/tools/package.json

@@ -21,6 +21,7 @@
     "cbor-edn": "catalog:",
     "cbor2": "catalog:",
     "cross-env": "catalog:",
+    "cross-spawn": "catalog:",
     "deno": "catalog:",
     "oxfmt": "catalog:",
     "oxlint": "catalog:",
@@ -33,6 +34,7 @@
     "vitest": "catalog:"
   },
   "devDependencies": {
+    "@types/cross-spawn": "catalog:",
     "vite-task-tools": "workspace:*"
   }
 }

packages/tools/src/remote-cache/cli.ts

@@ -1,7 +1,7 @@
 #!/usr/bin/env node
-import { spawn } from 'node:child_process';
 import { once } from 'node:events';
 import type { AddressInfo } from 'node:net';
+import spawn from 'cross-spawn';
 import { createCacheServer } from './server.ts';
 
 const basePath = '/projects/test';
@@ -18,6 +18,7 @@ await once(server, 'listening');
 const { port } = server.address() as AddressInfo;
 // Ctrl-C is left to the command.
 process.on('SIGINT', () => {});
+// cross-spawn runs pnpm's `.cmd` shims, such as `cbor-http`, on Windows.
 const child = spawn(command!, args, {
   stdio: 'inherit',
   env: { ...process.env, VP_REMOTE_CACHE_URL: `http://127.0.0.1:${port}${basePath}` },

pnpm-workspace.yaml

@@ -17,13 +17,15 @@ catalog:
   '@fastify/busboy': 3.2.2
   '@openai/codex': 0.160.0
   '@tsconfig/strictest': ^2.0.8
+  '@types/cross-spawn': 6.0.6
   '@types/node': 25.0.3
   '@playwright/browser-chromium': 1.63.0
   '@vitest/browser-playwright': 5.0.3
   bun: 1.4.2
   cbor-edn: 0.2.2
   cbor2: 1.12.0
   cross-env: ^10.1.0
+  cross-spawn: 7.0.6
   deno: 2.9.6
   husky: ^9.1.7
   lint-staged: ^17.0.0