Can't install Brain.js on macOS

Question

I'm using an m1 mac and I'm trying to install Brain.js but it's not working.

When running python --version I get Python 3.11.3

When running /usr/bin/xcodebuild -version I get Xcode 14.3 Build version 14E222b

But when I run npm i Brain.js I get the following error

npm WARN deprecated @npmcli/move-file@2.0.1: This functionality has been moved to @npmcli/fs
npm ERR! code 1
npm ERR! path /Users/chaim/developer/personal/tax-docs/node_modules/gpu.js/node_modules/gl
npm ERR! command failed
npm ERR! command sh -c prebuild-install || node-gyp rebuild
npm ERR! prebuild-install warn install No prebuilt binaries found (target=18.15.0 runtime=node arch=arm64 libc= platform=darwin)
npm ERR! gyp info it worked if it ends with ok
npm ERR! gyp info using node-gyp@9.3.1
npm ERR! gyp info using node@18.15.0 | darwin | arm64
npm ERR! gyp info find Python using Python version 3.11.3 found at "/opt/homebrew/opt/python@3.11/bin/python3.11"
npm ERR! gyp info spawn /opt/homebrew/opt/python@3.11/bin/python3.11
npm ERR! gyp info spawn args [
npm ERR! gyp info spawn args   '/Users/chaim/developer/personal/tax-docs/node_modules/node-gyp/gyp/gyp_main.py',
npm ERR! gyp info spawn args   'binding.gyp',
npm ERR! gyp info spawn args   '-f',
npm ERR! gyp info spawn args   'make',
npm ERR! gyp info spawn args   '-I',
npm ERR! gyp info spawn args   '/Users/chaim/developer/personal/tax-docs/node_modules/gpu.js/node_modules/gl/build/config.gypi',
npm ERR! gyp info spawn args   '-I',
npm ERR! gyp info spawn args   '/Users/chaim/developer/personal/tax-docs/node_modules/node-gyp/addon.gypi',
npm ERR! gyp info spawn args   '-I',
npm ERR! gyp info spawn args   '/Users/chaim/Library/Caches/node-gyp/18.15.0/include/node/common.gypi',
npm ERR! gyp info spawn args   '-Dlibrary=shared_library',
npm ERR! gyp info spawn args   '-Dvisibility=default',
npm ERR! gyp info spawn args   '-Dnode_root_dir=/Users/chaim/Library/Caches/node-gyp/18.15.0',
npm ERR! gyp info spawn args   '-Dnode_gyp_dir=/Users/chaim/developer/personal/tax-docs/node_modules/node-gyp',
npm ERR! gyp info spawn args   '-Dnode_lib_file=/Users/chaim/Library/Caches/node-gyp/18.15.0/<(target_arch)/node.lib',
npm ERR! gyp info spawn args   '-Dmodule_root_dir=/Users/chaim/developer/personal/tax-docs/node_modules/gpu.js/node_modules/gl',
npm ERR! gyp info spawn args   '-Dnode_engine=v8',
npm ERR! gyp info spawn args   '--depth=.',
npm ERR! gyp info spawn args   '--no-parallel',
npm ERR! gyp info spawn args   '--generator-output',
npm ERR! gyp info spawn args   'build',
npm ERR! gyp info spawn args   '-Goutput_dir=.'
npm ERR! gyp info spawn args ]
npm ERR! /bin/sh: python: command not found
npm ERR! gyp: Call to 'python commit_id.py check ..' returned exit status 127 while in angle/src/angle.gyp. while loading dependencies of
     binding.gyp while trying to load binding.gyp
npm ERR! gyp ERR! configure error
npm ERR! gyp ERR! stack Error: `gyp` failed with exit code: 1
npm ERR! gyp ERR! stack     at ChildProcess.onCpExit (/Users/chaim/developer/personal/tax-docs/node_modules/node-gyp/lib/configure.js:325:16)
npm ERR! gyp ERR! stack     at ChildProcess.emit (node:events:513:28)
npm ERR! gyp ERR! stack     at ChildProcess._handle.onexit (node:internal/child_process:291:12)
npm ERR! gyp ERR! System Darwin 22.5.0
npm ERR! gyp ERR! command "/usr/local/bin/node" "/Users/chaim/developer/personal/tax-docs/node_modules/.bin/node-gyp"
     "rebuild"
npm ERR! gyp ERR! cwd /Users/chaim/developer/personal/tax-docs/node_modules/gpu.js/node_modules/gl
npm ERR! gyp ERR! node -v v18.15.0
npm ERR! gyp ERR! node-gyp -v v9.3.1
npm ERR! gyp ERR! not ok

Any ideas?

Answer 1

In MacOS Monterey, they removed the default installation of python 2.

You may need to install version 2 manually.

You can also try tricking the installer into using version 3:

ln -s /opt/homebrew/bin/python3 /opt/homebrew/bin/python

EDIT: Can confirm this works on my M1 box.