Well... Tha was ... instructive ...
We see to have two consistent options to keep R a standard package :
1. Keep R as a standard package, including the binaries. This involves :
- make xz a standard package ;
- port the old-style pcre package as a new-style standard package ;
- make R depend on xz and pcre ;
2. Keep an interface to R as a standard package. This involves :
- make a working system's R installation a a prerequisite of R ;
- possibly making this prerequisite (R's)-version-specific.
The first solution guarantees that any existing code using R can still be
run (modulo R's evolution) but involves maintaining a not-so-small R binary
for an indefinite future... It also involves a duplication of R packages
libraries between system's and Sage's installations, which can be a
non-trivial amount (my *small* use of R packages amounts to about 360
packages, 29 among them being "standard" R packages). This cvcan be
alleviated by using Sage's R as the system's R installation (I didn't do
that until now for fear of sage's problems : R is my daily bread and
butter...).
The second one breaks this guarantee, and introduces the possibility of
version incompatibilities between R and Sage.
We could also make R an optional package, with (again) two options :
- Maintain a R optional binary, depending on xz and pcre.
- Maintain an R optional interface.
Making R optional *will* break existing code.
This boils down to :
- R binary standard
- R interface standard
- R binary optional
- R interface optional
My vote goes to R binary standard for now (dissecting the current package
to separate binary and interface and creating the required Makefile
modifications is not trivial) ; my second choice would be R interface
standard, if we can accept the possibility of R-induced inconsistencies...)
What are your choices ?
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