[MacPorts] #67299: R packages: occasionally select dependencies fail to be found, despite being installed

[MacPorts]

#67299: R packages: occasionally select dependencies fail to be found, despite
being installed
--------------------------+--------------------
 Reporter:  barracuda156  |      Owner:  (none)
     Type:  defect        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.8.1
 Keywords:                |       Port:  R
--------------------------+--------------------
 Examples:
 {{{
 --->  Testing R-markovmix
 * using log directory ‘/opt/local/var/macports/build
 /_opt_PPCRosettaPorts_R_R-
 markovmix/R-markovmix/work/markovmix/markovmix.Rcheck’
 * using R version 4.2.3 (2023-03-15)
 * using platform: powerpc-apple-darwin10.8.0 (32-bit)
 * using session charset: UTF-8
 * checking for file ‘markovmix/DESCRIPTION’ ... OK
 * this is package ‘markovmix’ version ‘0.1.0’
 * package encoding: UTF-8
 * checking package namespace information ... OK
 * checking package dependencies ... ERROR
 Package suggested but not available: ‘ggplot2’

 The suggested packages are required for a complete check.
 Checking can be attempted without them by setting the environment
 variable _R_CHECK_FORCE_SUGGESTS_ to a false value.

 See section ‘The DESCRIPTION file’ in the ‘Writing R Extensions’
 manual.
 * DONE

 Status: 1 ERROR
 }}}

 Also:
 https://github.com/husson/FactoMineR/issues/19
 https://github.com/michaelhallquist/MplusAutomation/issues/186
 I recall at least one more case with another package.

 What goes wrong?

-- 
Ticket URL: <https://trac.macports.org/ticket/67299>
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