GNU bug report logs - #33781
tramp trouble when PATH is very long

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Message #9 received at 33781 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: 33781 <at> debbugs.gnu.org
Subject: Re: bug#33781: tramp tests abort on hydra
Date: Mon, 17 Dec 2018 20:05:15 -0500

I installed nix locally and reproduced the issue.
AFAICS it is due to

(setq attr (directory-files-and-attributes tmp-name2))

throwing an error with

tmp-name2 =
#("/mock:AAAA.BBBBBBBB.CCC:/AAAA_data1/scratch/UUUUUUU/software64/nix/tmp/tramp-testqSsjHd/bla" 6 23 (tramp-default t))

AFAICS from the tramp debug buffer, the problem is a failure to find
"sed" on the remote system. It should be using
/nix/store/ny5p32137wfyzdm485xfdck21w1gyl3g-gnused-4.5/bin/sed, in much
the same way as it using
/nix/store/wm8va53fh5158ipi0ic9gir64hrvqv1z-coreutils-8.29/bin/ls .

;; Emacs: 27.0.50 Tramp: 2.4.1-pre -*- mode: outline; -*-
16:53:21.240431 tramp-send-command (6) # test -d /AAAA_data1/scratch/UUUUUUU/software64/nix/tmp/tramp-testRd0FTK/bla 2>/dev/null; echo tramp_exit_status $?
16:53:21.241805 tramp-wait-for-regexp (6) # 
tramp_exit_status 0
///4edae1a3102909a43b8d4c6e6e62ec10#$
16:53:21.248310 tramp-do-directory-files-and-attributes-with-stat (5) # directory-files-and-attributes with stat: /AAAA_data1/scratch/UUUUUUU/software64/nix/tmp/tramp-testRd0FTK/bla
16:53:21.249681 tramp-send-command (6) # cd /AAAA_data1/scratch/UUUUUUU/software64/nix/tmp/tramp-testRd0FTK/bla && echo "("; (/nix/store/wm8va53fh5158ipi0ic9gir64hrvqv1z-coreutils-8.29/bin/ls --color=never --quoting-style=literal --show-control-chars -a | xargs env QUOTING_STYLE=locale /nix/store/wm8va53fh5158ipi0ic9gir64hrvqv1z-coreutils-8.29/bin/stat -c '(/////%n///// (/////%N/////) %h %u %g %X %Y %Z %s /////%A///// t %i -1)' -- 2>/dev/null | sed -e 's/"/\\"/g' -e 's/\/\/\/\/\//"/g'); echo ")" 2>/dev/null; echo tramp_exit_status $?
16:53:21.257525 tramp-wait-for-regexp (6) # 
(
sh: sed: command not found
)
tramp_exit_status 0
///4edae1a3102909a43b8d4c6e6e62ec10#$
16:53:21.279389 tramp-send-command (6) # cd / && rm -rf /AAAA_data1/scratch/UUUUUUU/software64/nix/tmp/tramp-testRd0FTK 2>/dev/null; echo tramp_exit_status $?
16:53:21.286694 tramp-wait-for-regexp (6) # 
tramp_exit_status 0
///4edae1a3102909a43b8d4c6e6e62ec10#$

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