How can I access a resource or file from one Homebrew formula in another's install?

[aryairani]

I have one formula "A" that installs stuff in its share directory, and I want to know how to read the directory from another formula("B")'s install. Is it possible?

Do I need to install A's resources into etc. instead of share? Or how can I share data between packages?

I would use B's data as a resource, but it's got its own build process, so I thought having its own formula would be better.

Thanks in advance!

[nandahkrishna]

You should be able to use Formula["A"].share to get the path of A's share directory. Of course, B should depend on A.

Update: You can take a look at sng in homebrew/core for an example.

[aryairani]

Thanks — I had tried this but misunderstood that the string passed to Formula should be the kebab-case, not camel-case, and got a FormulaUnavailableError. So Formula["a"].share, I suppose, rather than Formula["A"].share.

[aryairani]

Is it possible to create a symlink to whatever version over Formula["a"].share happens to be brew linked? Currently it picks the version that was available at the time that B was installed:

lrwxr-xr-x  1 arya  admin    34 Jun  7 13:06 ui -> ../../ucm-codebase-ui/1.0.M2/share

(Feel free to let me know if I should open a separate discussion.)

[nandahkrishna]

You could use opt_share:

irb(main):001:0> Formula["wget"].opt_share
=> #<Pathname:/usr/local/opt/wget/share>