Невозможно установить web3@1.0.0-beta.26

Question

Я побежал:

npm install --save web3@1.0.0-beta.26

тогда я получил:

npm WARN deprecated fs-promise@2.0.3: Use mz or fs-extra^3.0 with Promise Support
npm WARN deprecated tar.gz@1.0.7: ⚠️  WARNING ⚠️ tar.gz module has been deprecated and your application is vulnerable. Please use tar module instead: https://npmjs.com/tar

> scrypt@6.0.3 preinstall /Users/mike/Desktop/inbox/node_modules/scrypt
> node node-scrypt-preinstall.js


> scrypt@6.0.3 install /Users/mike/Desktop/inbox/node_modules/scrypt
> node-gyp rebuild

gyp ERR! configure error 
gyp ERR! stack Error: Command failed: /Users/mike/.pyenv/shims/python2 -c import platform; print(platform.python_version());
gyp ERR! stack pyenv: python2: command not found
gyp ERR! stack 
gyp ERR! stack The `python2' command exists in these Python versions:
gyp ERR! stack   2.7.9
gyp ERR! stack   anaconda-2.1.0
gyp ERR! stack 
gyp ERR! stack 
gyp ERR! stack     at ChildProcess.exithandler (child_process.js:275:12)
gyp ERR! stack     at emitTwo (events.js:126:13)
gyp ERR! stack     at ChildProcess.emit (events.js:214:7)
gyp ERR! stack     at maybeClose (internal/child_process.js:925:16)
gyp ERR! stack     at Socket.stream.socket.on (internal/child_process.js:346:11)
gyp ERR! stack     at emitOne (events.js:116:13)
gyp ERR! stack     at Socket.emit (events.js:211:7)
gyp ERR! stack     at Pipe._handle.close [as _onclose] (net.js:554:12)
gyp ERR! System Darwin 17.5.0
gyp ERR! command "/usr/local/bin/node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /Users/mike/Desktop/inbox/node_modules/scrypt
gyp ERR! node -v v8.9.1
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok 
npm WARN inbox@1.0.0 No description
npm WARN inbox@1.0.0 No repository field.

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! scrypt@6.0.3 install: `node-gyp rebuild`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the scrypt@6.0.3 install script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/mike/.npm/_logs/2018-04-19T03_13_41_565Z-debug.log

Что я могу сделать, чтобы это исправить?

Заранее спасибо.