Unable to run commands after installing via Yarn

Installing Astrum with Yarn initially appears successful:

$ yarn global add astrum
yarn global v0.19.1
warning No license field
[1/4] 🔍  Resolving packages...
[2/4] 🚚  Fetching packages...
[3/4] 🔗  Linking dependencies...
[4/4] 📃  Building fresh packages...
success Installed "astrum@1.9.3" with binaries:
      - astrum
warning No license field
✨  Done in 19.23s.

However, attempting to astrum init results in the following:

$ astrum init ./pattern-library
astrum-init(1) does not exist, try --help

If I reinstall with npm install -g astrum, I'm able to run astrum init as expected. It looks like there was a similar issue found (and fixed) in Vue.js here: vuejs/vue-cli#206

I tried replicating the fix described in the referenced PR to no avail.

Your environment

Platform: OS X
OS Version: 10.11.5
Node Version: v6.3.0
NPM Version: N/A
Astrum Version: 1.9.3

[NonPolynomial]

@jakestubbz can you check, if there is a manager folder, where astrum have to be installed through yarn? To get that <path>, you can use yarn cache dir, then move to <path>/../config/global/node_modules.

I had a look at vue-cli. It seems they added missing files to bin in package.json.

Maybe add all files from manager folder to package.json?