Re: [PATCH] gnu: r: Use uname from Guix

[Roel Janssen <roel@gnu.org>]

Ricardo Wurmus writes:

> Roel Janssen <roel@gnu.org> writes:
>
>> Dear Guix,
>>
>> When running R, it executes a wrapper script that relies on
>> @code{uname} to be available in PATH:
>>
>>> R_HOME_DIR=/gnu/store/dz83xhn43qc2dpdrja8mhx78l7qffqvq-r-3.3.0/lib/R
>>> if test "${R_HOME_DIR}" = "/gnu/store/dz83xhn43qc2dpdrja8mhx78l7qffqvq-r-3.3.0/lib/R"; then
>>>    case "linux-gnu" in
>>>    linux*)
>>>      run_arch=`uname -m`
>>>      case "$run_arch" in
>>>         x86_64|mips64|ppc64|powerpc64|sparc64|s390x)
>>>           libnn=lib64
>>
>> Running R in a pure, ad-hoc environment will therefore signal a warning
>> that it cannot execute "uname".
>>
>> With the following patch, it no longer makes this assumption.  Instead
>> it uses an absolute path to a uname binary from the Guix store.
>>
>>From e364cb25204edea4d8bfb9cfc52764f811c58e72 Mon Sep 17 00:00:00 2001
>> From: Roel Janssen <roel@gnu.org>
>> Date: Wed, 26 Oct 2016 17:09:19 +0200
>> Subject: [PATCH] gnu: r: Use uname from Guix
>>
>> * gnu/packages/statistics.scm (r): Use uname from Guix.
>> ---
>>  gnu/packages/statistics.scm | 7 +++++++
>>  1 file changed, 7 insertions(+)
>>
>> diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
>> index 1b8d074..5e4cd8c 100644
>> --- a/gnu/packages/statistics.scm
>> +++ b/gnu/packages/statistics.scm
>> @@ -118,6 +118,12 @@ be output in text, PostScript, PDF or HTML.")
>>                              "/lib/R/lib"))
>>         #:phases
>>         (modify-phases %standard-phases
>> +         (add-before 'configure 'patch-uname
>> +           (lambda* (#:key inputs #:allow-other-keys)
>> +             (let ((uname-bin (string-append (assoc-ref inputs "coreutils")
>> +                                             "/bin/uname")))
>> +               (substitute* "src/scripts/R.sh.in"
>> +                 (("uname") uname-bin)))))
>
> Please add #t to the end, because “substitute*” doesn’t have a return value.

Right.  I will try to remember this better in the future too.

>>           (add-before
>>            'configure 'set-default-pager
>>            ;; Set default pager to "cat", because otherwise it is "false",
>> @@ -169,6 +175,7 @@ be output in text, PostScript, PDF or HTML.")
>>       `(;; We need not only cairo here, but pango to ensure that tests for the
>>         ;; "cairo" bitmapType plotting backend succeed.
>>         ("pango" ,pango)
>> +       ("coreutils" ,coreutils)
>>         ("curl" ,curl)
>>         ("tzdata" ,tzdata)
>>         ("gfortran" ,gfortran)
>
> This looks good to me.  Thanks!

Thanks!  I applied the changes above and pushed it in b5ce25cc0.

Kind regards,
Roel Janssen