node_gyp error <string>:268: SyntaxWarning: invalid escape sequence '\/' (reproducible, works ok in npm)

[iki]

Steps to reproduce (on Windows):

1. Check just-bash install works OK using npm (full log):

   > npm i -g just-bash --allow-scripts node-liblzma,@mongodb-js/zstd
   > just-bash --version

2. Try just-bash install using aube:

   > aube a -g just-bash --allow-build=node-liblzma --allow-build=@mongodb-js/zstd
   Resolving just-bash@latest...
     + just-bash@3.2.0 (specifier: 3.2.0)
   Updated package.json
   aube 1.37.0 by jdx.dev  [====================================================================================================================================]   81/81 pkgs
   gyp info it worked if it ends with ok
   gyp info using node-gyp@12.4.0
   gyp info using node@26.7.0 | win32 | x64
   (node:73540) [DEP0190] DeprecationWarning: Passing args to a child process with shell option true can lead to security vulnerabilities, as the arguments are not escaped, only concatenated.
   (Use `node --trace-deprecation ...` to show where the warning was created)
   gyp info find Python using Python version 3.12.13 found at "C:\_\.bin\.python\python.exe"
   
   gyp info find VS using VS2026 (18.8.12023.21) found at:
   gyp info find VS "C:\Program Files (x86)\Microsoft Visual Studio\18\BuildTools"
   gyp info find VS run with --verbose for detailed information
   gyp info spawn C:\_\.bin\.python\python.exe
   gyp info spawn args [
   gyp info spawn args 'C:\\Users\\iki\\AppData\\Local\\aube\\virtual-store\\node-gyp@12.4.0-6533f618306f657d\\node_modules\\node-gyp\\gyp\\gyp_main.py',
   gyp info spawn args 'binding.gyp',
   gyp info spawn args '-f',
   gyp info spawn args 'msvs',
   gyp info spawn args '-I',
   gyp info spawn args 'C:\\Users\\iki\\AppData\\Local\\pnpm\\global-aube\\3b4-19fd7cefa1d\\node_modules\\.aube\\node-liblzma@2.2.0\\node_modules\\node-liblzma\\build\\config.gypi',
   gyp info spawn args '-I',
   gyp info spawn args 'C:\\Users\\iki\\AppData\\Local\\aube\\virtual-store\\node-gyp@12.4.0-6533f618306f657d\\node_modules\\node-gyp\\addon.gypi',
   gyp info spawn args '-I',
   gyp info spawn args 'C:\\Users\\iki\\AppData\\Local\\node-gyp\\Cache\\26.7.0\\include\\node\\common.gypi',
   gyp info spawn args '-Dlibrary=shared_library',
   gyp info spawn args '-Dvisibility=default',
   gyp info spawn args '-Dnode_root_dir=C:\\Users\\iki\\AppData\\Local\\node-gyp\\Cache\\26.7.0',
   gyp info spawn args '-Dnode_gyp_dir=C:\\Users\\iki\\AppData\\Local\\aube\\virtual-store\\node-gyp@12.4.0-6533f618306f657d\\node_modules\\node-gyp',
   gyp info spawn args '-Dnode_lib_file=C:\\\\Users\\\\iki\\\\AppData\\\\Local\\\\node-gyp\\\\Cache\\\\26.7.0\\\\<(target_arch)\\\\node.lib',
   gyp info spawn args '-Dmodule_root_dir=C:\\Users\\iki\\AppData\\Local\\pnpm\\global-aube\\3b4-19fd7cefa1d\\node_modules\\.aube\\node-liblzma@2.2.0\\node_modules\\node-liblzma',
   gyp info spawn args '-Dnode_engine=v8',
   gyp info spawn args '--depth=.',
   gyp info spawn args '--no-parallel',
   gyp info spawn args '--generator-output',
   gyp info spawn args 'C:\\Users\\iki\\AppData\\Local\\pnpm\\global-aube\\3b4-19fd7cefa1d\\node_modules\\.aube\\node-liblzma@2.2.0\\node_modules\\node-liblzma\\build',
   gyp info spawn args '-Goutput_dir=.'
   gyp info spawn args ]
   <string>:268: SyntaxWarning: invalid escape sequence '\/'
   gyp: ..\..\..\node-addon-api@8.9.1-be31d886aacfaeb5\node_modules\node-addon-api\node_api.gyp not found (cwd: C:\Users\iki\AppData\Local\pnpm\global-aube\3b4-19fd7cefa1d\node_modules\.aube\node-liblzma@2.2.0\node_modules\node-liblzma) while loading dependencies of binding.gyp while trying to load binding.gyp
   gyp ERR! configure error
   gyp ERR! stack Error: `gyp` failed with exit code: 1
   gyp ERR! stack at ChildProcess.<anonymous> (C:\Users\iki\AppData\Local\aube\virtual-store\node-gyp@12.4.0-6533f618306f657d\node_modules\node-gyp\lib\configure.js:317:18)
   gyp ERR! stack at ChildProcess.emit (node:events:514:20)
   gyp ERR! stack at ChildProcess._handle.onexit (node:internal/child_process:294:12)
   gyp ERR! System Windows_NT 10.0.26200
   gyp ERR! command "C:\\_\\.mise\\node\\26.7.0\\node.exe" "C:\\Users\\iki\\AppData\\Local\\aube\\tools\\node-gyp\\v12\\node_modules\\.aube\\node-gyp@12.4.0\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
   gyp ERR! cwd C:\Users\iki\AppData\Local\pnpm\global-aube\3b4-19fd7cefa1d\node_modules\.aube\node-liblzma@2.2.0\node_modules\node-liblzma
   gyp ERR! node -v v26.7.0
   gyp ERR! node-gyp -v v12.4.0
   gyp ERR! $npm_package_name node-liblzma
   gyp ERR! $npm_package_version 2.2.0
   gyp ERR! not ok
     × lifecycle script install failed for node-liblzma@2.2.0: script `install` exited with code Some(1)

[jdx]

Thanks for the detailed reproduction. The Python SyntaxWarning is incidental; the actual failure is the following node_api.gyp not found error.

The root cause is a Windows/global-virtual-store path mismatch. Dependency lifecycle scripts run through the logical node_modules/.aube/... junction, while node-gyp can resolve node-addon-api through its physical graph-hashed global-store path. On Windows, the logical working directory is preserved, so node-gyp interprets the resolved GYP path in the wrong namespace.

#1238 fixes this by canonicalizing isolated dependency build directories before running lifecycle scripts, including the rebuild path. Until that lands, disabling the global virtual store should work around it:

aube --disable-global-virtual-store a -g just-bash --allow-build=node-liblzma --allow-build=@mongodb-js/zstd

AI-assisted — Tool: Codex; model: OpenAI/GPT-5; version: unavailable.

[iki]

Awesome @jdx 🔥 Thank you!

✅ Fixed in #1238, released in aube v1.38.0, tested OK