Dear @jan,
I just downloaded rserve_client via pack_install(rserve_client), and I received a Version 1.2.0. From the numbering, Version 1.2.0 seems to be a fresher version than the one on github; on the other hand, it does not include your recent commit 48a4616 that suppresses a warning related to eol//0 which is also defined in dcg/basics.
I did a diff -r rserve_client .local/share/swi-prolog/pack/rserve_client, the left one pointing to github (Version 1.1.1) and the right one to the one selected by pack_install (Version 1.2.0). From what I saw in the output, 1.1.1 is actually more recent than 1.2.0, so I think 1.2.0 can be removed.
Best wishes,
Matthias
matthias@DESKTOP-A2T8IFC:~$ diff -r rserve_client .local/share/swi-prolog/pack/rserve_client
Only in rserve_client: .git
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: .git
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: .gitmodules
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: DESCRIPTION
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: INDEX
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: LICENSE
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: NAMESPACE
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: NEWS
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: R
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: cleanup
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: clients.txt
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: configure.ac
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: configure.win
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: m4
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: man
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: mkdist
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: src
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: test
Only in .local/share/swi-prolog/pack/rserve_client/Rserve: version
Only in .local/share/swi-prolog/pack/rserve_client: buildenv.sh
Only in .local/share/swi-prolog/pack/rserve_client/cc: rserve.o
Only in .local/share/swi-prolog/pack/rserve_client: lib
diff -r rserve_client/pack.pl .local/share/swi-prolog/pack/rserve_client/pack.pl
2c2
< version('1.1.1').
---
> version('1.2.0').
5,7c5,7
< author( 'Jan Wielemaker', 'jan@swi-prolog.org' ).
< packager( 'Jan Wielemaker', 'jan@swi-prolog.org' ).
< maintainer( 'Jan Wielemaker', 'jan@swi-prolog.org' ).
---
> author( 'Jan Wielemaker', 'J.Wielemaker@cwi.nl' ).
> packager( 'Jan Wielemaker', 'J.Wielemaker@cwi.nl' ).
> maintainer( 'Jan Wielemaker', 'J.Wielemaker@cwi.nl' ).
diff -r rserve_client/prolog/r/r_grammar.pl .local/share/swi-prolog/pack/rserve_client/prolog/r/r_grammar.pl
352,353d351
< :- if(\+ current_predicate(eol//0)).
< % part of library(dcg/basics) from 8.3.26.
357d354
< :- endif.
diff -r rserve_client/prolog/r/r_term.pl .local/share/swi-prolog/pack/rserve_client/prolog/r/r_term.pl
155,170d154
< % Support for signs + and -
< r_expr(Compound, Ctx) -->
< { compound(Compound),
< compound_name_arguments(Compound, Name, [Right]),
< r_prefix_op(Name, RName, Pri, Ass), !,
< r_pri(Pri, Ass, RPri)
< },
< ( { Ctx.priority >= Pri }
< -> atom(RName), " ",
< r_expr(Right, Ctx.put(priority,RPri))
< ; "(",
< atom(RName), " ",
< r_expr(Right, Ctx.put(priority,RPri)),
< ")"
< ).
<
254,261d237
<
< %% r_prefix_op(Op, Rop, Priority, Associativity)
< %
< % True if Op is the Prolog representation for the R operator Rop.
< r_prefix_op(-, -, 200, fy).
<
< r_pri(Pri, fx, APri) :- !, APri is Pri - 1.
< r_pri(Pri, fy, Pri).