Thanks for the answer.
No, in the end there's no problem, just a warning.

Rui Barradas

Em 17-07-2017 09:29, Martin Maechler escreveu:
Rui Barradas <ruipbarra...@sapo.pt>
     on Mon, 17 Jul 2017 09:03:33 +0100 writes:

     > Hello,
     > R 3.4.1 on Windows 7, sessionInfo at the end.
     > Is there a problem with install.packages? Since last friday every time I
     > try to install a package in RGui, I start by choosing the CRAN mirror
     > Cloud-0 and RGui hangs. So I restart RGui and choose Portugal (Lisbon)
     > and get the following warning after a long while (minutes).

As (I think) you notice below yourself, the problem is not with
the regular CRAN repos but with the  'CRANextra'  repos that
R users of Windows use sometimes.

We had heard offline of a potential timeout/downtime for a short
period at Oxford for that, so this may be the simple explanation.

On the other hand everything ends up working fine,
so all this is just a warning, right?

If I do the same thing I don't have to wait and get the same
warning as you (and when I then decide to use the older *binary*
for igraph that is installed fine).


     > install.packages("igraph")
     > --- Please select a CRAN mirror for use in this session ---
     > Warning: unable to access index for repository
     > http://www.stats.ox.ac.uk/pub/RWin/src/contrib:
     > cannot open URL 'http://www.stats.ox.ac.uk/pub/RWin/src/contrib/PACKAGES'
     > Warning: unable to access index for repository
     > http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/3.4:
     > cannot open URL
     > 'http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/3.4/PACKAGES'

     > There is a binary version available but the source version is later:
     > binary source needs_compilation
     > igraph  1.0.1  1.1.1              TRUE

     > Do you want to install from sources the package which needs compilation?
     > y/n: y
     > installing the source package ‘igraph’

     > trying URL 
     > Content type 'application/x-gzip' length 3376077 bytes (3.2 MB)
     > downloaded 3.2 MB
     > [...]

     > The rest of the process goes on with success.
     > The problem seems to be with 

     > When I check
     >> options("repos")
     > $repos
     > CRAN                            CRANextra
     > "http://cran.radicaldevelop.com"; "http://www.stats.ox.ac.uk/pub/RWin";

     > I'm lead to think that install.packages should try
     > "http://cran.radicaldevelop.com"; first, only in case of failure 

     > What is going on?

     >> sessionInfo()
     > R version 3.4.1 (2017-06-30)
     > Platform: x86_64-w64-mingw32/x64 (64-bit)
     > Running under: Windows 7 x64 (build 7601) Service Pack 1

     > Matrix products: default

     > locale:
     > [1] LC_COLLATE=Portuguese_Portugal.1252
     > LC_CTYPE=Portuguese_Portugal.1252
     > [3] LC_MONETARY=Portuguese_Portugal.1252 LC_NUMERIC=C

     > [5] LC_TIME=Portuguese_Portugal.1252

     > attached base packages:
     > [1] stats     graphics  grDevices utils     datasets  methods   base

     > other attached packages:
     > [1] igraph_1.0.1

     > loaded via a namespace (and not attached):
     > [1] compiler_3.4.1 magrittr_1.5   tools_3.4.1

     > Thanks in advance,

     > Rui Barradas

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