update rNMR to 1.1.8 using new xvfb-run port and xvfb subport as well as return to ${prefix}/lib/R/library

[howarth.at.macports@…]

The attached Portfile diff relies on the following tickets...

1) Ticket #46849 which restores the ability of the R package to find R packages placed in ${prefix}/lib/R/library

2) Ticket #46842 which adds the new xvfb-run package which provides the Debian xvfb-run utility.

3) Ticket #46856 which adds the new xvfb subport to the xorg-server package which the new xvfb-run package depends_run on.

The new rNMR Portfile.diff implements the following changes...

a) Moves the location of the installed rNMR R package back to its previous location in ${prefix}/lib/R/library.

b) Adds the missing "require_active_variants tk x11" as the rNMR package requires a tk to use X11.

c) Updates the rNMR package to the 1.1.8 release.

d) passes the "${prefix}/bin/R CMD INSTALL -l pkg --byte-compile --build ${distpath}/[lindex ${distfiles} 0]" command through "which xvfb-run" to avoid build failures due to the use of X11 in newer version of rNMR.r.

[howarth.at.macports@…]

Portfile diff to update to rNMR 1.1.8

[jeremyhu (Jeremy Huddleston Sequoia)]

system -W ${worksrcpath} "`which xvfb-run` ${prefix}/bin/R CMD INSTALL -l pkg --byte-compile --build ${distpath}/[lindex ${distfiles} 0]" 

No, let's not run an X11 server for the sake of installing a port. Can't you fix R to not try to use the X11 server if it isn't going to be rendering anything?

[howarth.at.macports@…]

There doesn't appear to be any way around this short of using Xvfb. The error occurs at...

* installing *source* package ‘rNMR’ ...
** R
** inst
** preparing package for lazy loading
Warning in fun(libname, pkgname) :
  couldn't connect to display "/private/tmp/com.apple.launchd.wGXyLuKQtG/org.macosforge.xquartz:0"
Warning in X11(title = "Main Plot Window", width = defaultSettings$size.main[1],  :
  unable to open connection to X11 display ''
Error in .External2(C_X11, d$display, d$width, d$height, d$pointsize,  : 
  unable to start device X11
Error : unable to load R code in package ‘rNMR’
ERROR: lazy loading failed for package ‘rNMR’

and R has made lazy-loading mandatory for R CMD Install for some time now.

​http://r.789695.n4.nabble.com/disable-lazy-loading-in-install-packages-td795231.html