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From: Ricardo Wurmus <rekado@elephly.net>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: 28157@debbugs.gnu.org
Subject: bug#28157: “r-minimal” retains no reference to “which”
Date: Tue, 22 Aug 2017 11:19:45 +0200	[thread overview]
Message-ID: <8760dgvu1a.fsf@elephly.net> (raw)
In-Reply-To: <877exwc7eh.fsf@gnu.org>


Ludovic Courtès <ludo@gnu.org> writes:

> Ricardo Wurmus <rekado@elephly.net> skribis:
>
>> R provides a function “Sys.which”, which embeds the full path to “which”
>> at configure time.  The path it embeds is that of “which” *before*
>> grafts.
>
> Where’s that reference?  I couldn’t find it:

You can see the reference (before commit
a8cd352304807ef60d06c35da07c5456f036688c) within an R session.  If you
type “Sys.which” the code for “Sys.which” will be printed.

    $ /gnu/store/hzc1fnrjv8ys399glbzmhds21fm9zzva-r-minimal-3.4.0/bin/R -e 'Sys.which' | grep /gnu/store
    which <- "/gnu/store/ppyczjc1figwv6yb6brg938y49856avb-which-2.21/bin/which"

(The reference is the same as “guix build --no-grafts which”.)

> Normally the grafting code replaces all the store references, unless the
> reference is somehow obfuscated (which would be surprising here.)

Right.  In the case of R, the environment for a package is serialized to
a possibly compressed data file (.Rdb) with an index (.Rdx).
“Sys.which” is part of the “base” package and I cannot find a plain text
reference to “bin/which” in the binaries for “base”.

I don’t know if we can (or should) disable compression for Rdb files.

--
Ricardo

GPG: BCA6 89B6 3655 3801 C3C6  2150 197A 5888 235F ACAC
https://elephly.net

  reply	other threads:[~2017-08-22  9:20 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-20 11:16 bug#28157: “r-minimal” retains no reference to “which” Ricardo Wurmus
2017-08-22  8:51 ` Ludovic Courtès
2017-08-22  9:19   ` Ricardo Wurmus [this message]
2017-08-22  9:29     ` Ricardo Wurmus
2017-08-22  9:38     ` Ludovic Courtès
2017-08-22 11:02       ` Ricardo Wurmus
2017-08-22 13:40         ` Ludovic Courtès
2017-08-22 14:03           ` Ricardo Wurmus
2017-08-22 14:33             ` Ricardo Wurmus

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