Re: [igraph] What is minimum version of R that supports igraph?

[Bob Harris]

Actually it appears to have had nothing to do with the version of R.  It was 
the *other* warning message that pointed to the real problem:
> Warning: unable to access index for repository 
> https://mirrors.nics.utk.edu/cran/src/contrib:
> unsupported URL scheme

Googling for that led me to
  https://gist.github.com/granek/319eb877b427a8fb85a8db61529f7415
where it shows that I need options(download.file.method = "wget") before my 
call to install.packages.

At least, doing that appears to have installed igraph.  Whether there are other 
problems -- who knows.

V


> On May 23, 2018, at 12:51 PM, Bob Harris <address@hidden> wrote:
> 
> Sorry to ask such a basic question.  (And I did try to find an answer in the 
> archive.)
> 
> (see log below) My attempt to install igraph on a machine running R 3.2.5 
> failed.  I can't tell whether this was a failure of the mirror or whether 
> igraph is not supported by R 3.2.5 -- at the end of the log there are two 
> warnings.
> 
> The answer will guide my next step.  Installing a more recent version of R is 
> a possibility but I expect it to be quite a headache (and which version is 
> right? the list of debian versions I found reports that every version from 
> 3.2.5 to 3.5.0 is either "experimental" or "unstable").  So I'd like to avoid 
> that if at all possible.
> 
> Thanks for any help,
> V
> 
> 
> This is what I tried:
> 
> $ R --vanilla
>> install.packages(c("igraph"))
> 
> Installing package into ‘/usr/local/lib/R/site-library’
> (as ‘lib’ is unspecified)
> Warning in install.packages(c("igraph")) :
>  'lib = "/usr/local/lib/R/site-library"' is not writable
> Would you like to use a personal library instead?  (y/n) [y]
> 
> Would you like to create a personal library
> ~/R/x86_64-pc-linux-gnu-library/3.2
> to install packages into?  (y/n) [y]
> 
> --- Please select a CRAN mirror for use in this session ---
> Error in download.file(url, destfile = f, quiet = TRUE) : 
>  unsupported URL scheme
> HTTPS CRAN mirror 
> 
> 1: 0-Cloud [https]                2: Austria [https]             
> ......... snip .........
> 19: USA (TN) [https]              20: USA (TX) [https]            
> 21: USA (WA) [https]              22: (HTTP mirrors)              
> 
> Selection: [19]
> 
> Warning: unable to access index for repository 
> https://mirrors.nics.utk.edu/cran/src/contrib:
>  unsupported URL scheme
> Warning message:
> package ‘igraph’ is not available (for R version 3.2.5) 
> 
> 
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