[ESS] Running R over tramp

[Chris Wallace]

Dear Jeremie,

short answer:
- ess version 18.10.3snapshot
- R version 3.6.1 (2019-07-05) -- "Action of the Toes"
- local system: Ubuntu 20.04.1 LTS
- remote system: Scientific Linux release 7.9 (Nitrogen)

long answer (sorry):
I do not believe this is a problem with ess. It is a long standing
issue for me that has persisted across multiple versions of emacs, ess,
R and (local) Ubuntu.  It does not occur when I have run R via tramp on
other remote systems. I believe it is a problem particular to this
remote system, and am seeking a workaround.

Chris



On Fri, 2020-12-18 at 22:42 +0100, Jeremie Juste wrote:
> Hello,
> 
> I'm running R over tramp without any issues you described.
> Could you please specify versions of the ESS package you are using?
> 
> 
> Please, keep it straight to the point and keep in mind that someone
> is
> reading your mail trying to help.
> 
> Best regards,
> Jeremie
> 
> - ess-version: 18.10.3snapshot [elpa: 20200825.829] 
> - R version 4.0.3 (2020-10-10) -- "Bunny-Wunnies Freak Out"  
> - GNU/Linux Debian 10
> 
> 
> On Friday, 18 Dec 2020 at 10:48, Chris Wallace via ESS-help wrote:
> > Dear ESS-help,
> > 
> > it is frankly still magic to me that I can run R over tramp, and
> > this
> > is my main mode of working.  When starting a new R session, I open
> > a .R
> > file on the remote machine via tramp, and then M-x R. About 20% of
> > the
> > time this just works, and I have all the nice ESS help etc.  The
> > result
> > of the time, either the R prompt hangs, and I have to C-c C-c out
> > of
> > the hang, or the code that is being silently sourced appears at the
> > prompt (I have pasted an example of this below). After this the
> > session
> > still works, but I might not have completion, and help doesn't
> > work.
> >  Eg writing ?ls at the prompt gives an error "Error in
> > .ess.command(.ess.help("ls")) : object 'withVisib' not found".
> > 
> > The remote server does have relatively slow IO, and I suspect this
> > may
> > be the cause of the issue.
> > 
> > My question (finally) is: how can I find out the code that is being
> > sourced and sent to the remote process, and can I source this code
> > manually myself to "fix" these cases when it has failed itself?
> > 
> > Thanks for a wonderful package,
> > 
> > Chris
> > 
> > R version 3.6.1 (2019-07-05) -- "Action of the Toes"
> > Copyright (C) 2019 The R Foundation for Statistical Computing
> > Platform: x86_64-pc-linux-gnu (64-bit)
> > 
> > R is free software and comes with ABSOLUTELY NO WARRANTY.
> > You are welcome to redistribute it under certain conditions.
> > Type 'license()' or 'licence()' for distribution details.
> > 
> >   Natural language support but running in an English locale
> > 
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> > 
> > Type 'demo()' for some demos, 'help()' for on-line help, or
> > 'help.start()' for an HTML browser interface to help.
> > Type 'q()' to quit R.
> > 
> > > Error: unexpected '}' in "    }"
> > > Error: unexpected '}' in "}"
> > > > . + > Error: unexpected 'else' in:
> > "
> >         else"
> > > Error: object 'name' not found
> > > Error: unexpected '}' in "}"
> > > Error: object '.ess.' not found
> > > + + > Error: unexpected symbol in:
> > "        nsenv <- asNamespace(n
> >     stopifnot"
> > > + > Error in identical(nsenv, .BaseNamespaceEnv) : object 'nsenv'
> > > not
> > found
> > > Error: object 'spr' not found
> > > > + > Error: unexpected symbol in:
> > "    if (enviro
> >         return"
> > > Error: unexpected '}' in "    }"
> > > > Error in essenv[[".__ESSENV__."]] <- TRUE : object 'essenv' not
> > found
> > > Error: object 'at' not found
> > > > . + > Error: unexpected symbol in:
> > "
> >     on.exit"
> > > + + > Error: unexpected '}' in:
> > "        lockBinding(ns
> >     }"
> > > > Error: object 'essenv' not found
> > > Error: unexpected '}' in "}"
> > > > . + > Error: unexpected symbol in:
> > ".ess_devtools_functions <- function() {
> >   if (!requireNamespace("devtools"
> > > Error in .ess_mpi_send("error", msg) : 
> >   could not find function ".ess_mpi_send"
> > > Error: internal error
> > > Error: unexpected '}' in "  }"
> > > > > > > . + > > Error in .ess_keep(funs_exported, is.function) : 
> >   could not find function ".ess_keep"
> > > Error in .ess_keep(funs_pkg, is_first_arg, "pkg") : 
> >   could not find function ".ess_keep"
> > > Error in sort(names(funs_pkg)) : object 'funs_pkg' not found
> > > > Error: object 'funs_names' not found
> > > Error: unexpected '}' in "}"
> > > Error: unexpected '}' in "}"
> > > Error in .ess.command(options(STERM = "iESS", str.dendrogram.last
> > > =
> > "'",  : 
> >   object 'withVisib' not found
> > 
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