Bug 254686

Created attachment 223738 [details]
lang/scsh: Undelete and update port

The lang/scsh port was deleted in 2014
https://svnweb.freebsd.org/ports?view=revision&revision=367800

After some testing for a port contribution for scsh under pkgsrc-wip, it was possible to build scsh from src available at GitHub
https://github.com/scheme/scsh
This build used scheme48

The attached patch would undelete the lang/scsh port. furthermore updating the port with the following features
* using scsh src from the scheme group at GitHub. 
* add a second distfile, to accommodate a git submodule (rx) used for the scsh build
* using scheme48 when building this src
* adding port options for processing the scsh reference documentation, to an effect of producing documentation in any zero or more formats: Text, Markdown, HTML, LaTeX, and PDF. Any of these options requires, at least, racket - as to provide racket's scribble cmd. The PDF option also requires Xetex
* updated pkg-message, for the newer src
* adding a test target

To address some known concerns about the undeleted port:
- There are other ways to produce PDF with racket's scribble. Using Xetex might serve at least to minimize the additional dependencies under this port option
- While I've tested the build and the built scsh locally under a direct ports build, I've not yet been able to test it under a poudriere build - Poudriere is now in hour 48 of a local ports build and the build machine is pretty well maxxed out for processor usage. Inasmuch, I'm not entirely certain if all the build dependencies will "Just work" under Poudriere - there may be some option-specific dependencies I've missed, simply due to the ports being installed under the initial build
- The scsh built with the direct ports build, locally, has been tested only insofar as to ensure it can create a REPL on the console.  Candidly, although the updated port provides a test target, I notice that I've not yet built the port under a testing configuration.

Regardless, I hope that the patch may be of interest. I'll try to conduct some further testing with the patched ports tree, locally. I believe it might be usable as-is. 

Of course, it may need further build testing with poudriere - such as with all docs options enabled, to catch any missing deps - and testing under the test target.


Health,

- Sean Champ