Sudo Access Required to Install Keybase on Mavericks

If I try to install keybase on Mavericks at the command line as a regular user, I get this:

C02M705CFD57:~ thomas.quinlan$ npm install -g keybase-installer
npm ERR! error rolling back Error: EACCES, unlink '/usr/local/lib/node_modules/keybase-installer'
npm ERR! error rolling back keybase-installer@0.1.22 { [Error: EACCES, unlink '/usr/local/lib/node_modules/keybase-installer']
npm ERR! error rolling back errno: 3,
npm ERR! error rolling back code: 'EACCES',
npm ERR! error rolling back path: '/usr/local/lib/node_modules/keybase-installer' }
npm ERR! Error: EACCES, unlink '/usr/local/lib/node_modules/keybase-installer'
npm ERR! { [Error: EACCES, unlink '/usr/local/lib/node_modules/keybase-installer']
npm ERR! errno: 3,
npm ERR! code: 'EACCES',
npm ERR! path: '/usr/local/lib/node_modules/keybase-installer' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.

npm ERR! System Darwin 13.3.0
npm ERR! command "node" "/usr/local/bin/npm" "install" "-g" "keybase-installer"
npm ERR! cwd /Users/thomas.quinlan
npm ERR! node -v v0.10.29
npm ERR! npm -v 1.4.14
npm ERR! path /usr/local/lib/node_modules/keybase-installer
npm ERR! code EACCES
npm ERR! errno 3
npm ERR! stack Error: EACCES, unlink '/usr/local/lib/node_modules/keybase-installer'
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR! /Users/thomas.quinlan/npm-debug.log
npm ERR! not ok code 0

Sudo access gives me this:

C02M705CFD57:~ thomas.quinlan$ sudo npm install -g keybase-installer
Password:
/usr/local/bin/keybase-installer -> /usr/local/lib/node_modules/keybase-installer/bin/main.js
keybase-installer@0.1.22 /usr/local/lib/node_modules/keybase-installer

If I then try "keybase-installer", it also doesn't work without Sudo access:

C02M705CFD57:~ thomas.quinlan$ keybase-installer
info: Made temporary directory: /var/folders/1q/xkxccbjd1713pn98pht7lw8w6zpbnj/T/keybase_install_Ppt46qGRAyi_kk6sdLr2Bg
info: Using keyset version v1
info: Fetching URL https://dist.keybase.io/sig/files/1/index.asc
info: Fetching URL https://dist.keybase.io/pkg/stable
Download /pkg/files/keybase-0.4.14.tgz [=================================================] 100% 0.0s (2399396 bytes total)
info: Fetching URL https://dist.keybase.io/sig/files/1/keybase-0.4.14.tgz.asc
info: verified signature of keybase-0.4.14.tgz against keybase-0.4.14.tgz.asc
info: Running npm install keybase-0.4.14.tgz: this may take a minute, please be patient
npm ERR! error rolling back Error: EACCES, unlink '/usr/local/lib/node_modules/keybase'
npm ERR! error rolling back keybase@0.4.14 { [Error: EACCES, unlink '/usr/local/lib/node_modules/keybase']
npm ERR! error rolling back errno: 3,
npm ERR! error rolling back code: 'EACCES',
npm ERR! error rolling back path: '/usr/local/lib/node_modules/keybase' }
npm ERR! Error: EACCES, unlink '/usr/local/lib/node_modules/keybase'
npm ERR! { [Error: EACCES, unlink '/usr/local/lib/node_modules/keybase']
npm ERR! errno: 3,
npm ERR! code: 'EACCES',
npm ERR! path: '/usr/local/lib/node_modules/keybase' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.

npm ERR! System Darwin 13.3.0
npm ERR! command "node" "/usr/local/bin/npm" "install" "-g" "/var/folders/1q/xkxccbjd1713pn98pht7lw8w6zpbnj/T/keybase_install_Ppt46qGRAyi_kk6sdLr2Bg/keybase-0.4.14.tgz"
npm ERR! cwd /Users/thomas.quinlan
npm ERR! node -v v0.10.29
npm ERR! npm -v 1.4.14
npm ERR! path /usr/local/lib/node_modules/keybase
npm ERR! code EACCES
npm ERR! errno 3
npm ERR! stack Error: EACCES, unlink '/usr/local/lib/node_modules/keybase'
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR! /Users/thomas.quinlan/npm-debug.log
npm ERR! not ok code 0
info: cleaning up tmpdir /var/folders/1q/xkxccbjd1713pn98pht7lw8w6zpbnj/T/keybase_install_Ppt46qGRAyi_kk6sdLr2Bg
error: exit code 3

However, with sudo, it works:

C02M705CFD57:~ thomas.quinlan$ sudo keybase-installer
info: Made temporary directory: /tmp/keybase_install_E24kG6f8Ky-nSnYWb9-cjQ
gpg: WARNING: unsafe enclosing directory ownership on configuration file `/Users/thomas.quinlan/.gnupg/gpg.conf'
gpg: WARNING: unsafe enclosing directory ownership on configuration file`/Users/thomas.quinlan/.gnupg/gpg.conf'
info: Using keyset version v1
info: Fetching URL https://dist.keybase.io/sig/files/1/index.asc
gpg: WARNING: unsafe enclosing directory ownership on configuration file `/Users/thomas.quinlan/.gnupg/gpg.conf'
gpg: WARNING: unsafe enclosing directory ownership on configuration file`/Users/thomas.quinlan/.gnupg/gpg.conf'
info: Fetching URL https://dist.keybase.io/pkg/stable
Download /pkg/files/keybase-0.4.14.tgz [=================================================] 100% 0.0s (2399396 bytes total)
info: Fetching URL https://dist.keybase.io/sig/files/1/keybase-0.4.14.tgz.asc
gpg: WARNING: unsafe enclosing directory ownership on configuration file `/Users/thomas.quinlan/.gnupg/gpg.conf'
gpg: WARNING: unsafe enclosing directory ownership on configuration file`/Users/thomas.quinlan/.gnupg/gpg.conf'
info: verified signature of keybase-0.4.14.tgz against keybase-0.4.14.tgz.asc
# info: Running npm install keybase-0.4.14.tgz: this may take a minute, please be patient

Welcome to keybase.io!

You have successfully installed the command-line client to

====> /usr/local/bin/keybase <=======

Please make sure /usr/local/bin is in your PATH.

If you're new to the service run:

```
$ keybase signup # signup for a new account
$ keybase push # to push your public key to the server
-- or --
$ keybase gen # generate a new key and push it
```

If you already signed up via the Web or another keybase client, try:

```
$ keybase login # establish a session with the server, and pull down keys
```

Once you're configured, you can:

```
$ keybase prove twitter # prove your twitter identity
$ keybase id max # to identify a friend
$ keybase track max # to track them and write a proof to the server
```

And then attempt crypto actions like enc/dec/verify/sign. See `keybase --help` for
more details.

info: cleaning up tmpdir /tmp/keybase_install_E24kG6f8Ky-nSnYWb9-cjQ
C02M705CFD57:~ thomas.quinlan$

After that, tracking max works, meaning I've successfully reinstalled and updated, but only with sudo access.

Start with the keybase-installer command and its npm install steps, reproducing the reported Mavericks behavior as a regular user. Compare the global installation and downloaded keybase package installation paths; done means the installer and resulting keybase command work without sudo.

Written by the indexing model from the issue text.