bug#73052: emacs 30 ssh: couldn't find a proper `ls' command

bug#73052: emacs 30 ssh: couldn't find a proper `ls' command

[Christopher Howard]

Hi, I've recently started using emacs 30 which I compile from source. Something that broke in the switch from emacs 29->30 is I am not able to use tramp to ssh into any of my guix servers. I get this error

```
Debugger entered--Lisp error: (file-error "Couldn't find a proper `ls' command")
```

I reported this as an Emacs bug - 72861 - and based on the data I provided -- full backtrace, etc. -- they indicated it was a guix bug. They pointed me to guix bug 64534.

However, I tried adding the appropriate directory to tramp-remote-path (/run/current-system/profile/bin) and that did not work.

If I switch back to 29.4 then I can access my servers again normally through tramp.

Here is my system information:

```
christopher@theoden 
------------------- 
OS: Guix System x86_64 
Host: OptiPlex 9020 00 
Kernel: 5.15.161-gnu 
Uptime: 63 days, 19 hours, 14 mins 
Packages: 167 (guix-system), 251 (guix-user) 
Shell: bash 5.1.16 
Resolution: 1920x1080 
DE: GNOME 
Theme: Adwaita [GTK2/3] 
Icons: Adwaita [GTK2/3] 
Terminal: guix 
CPU: Intel i5-4570 (4) @ 3.600GHz 
GPU: AMD ATI Radeon HD 8490 / R5 235X OEM 
GPU: Intel HD Graphics 
Memory: 5038MiB / 15914MiB 
```

``` guix describe
Generation 143	Sep 03 2024 10:14:51	(current)
  guix 82174b2
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: 82174b2742c2a59fd7959ba9acc80edd6f93d9f7
```

The emacs version I am testing is:

GNU Emacs 30.0.90 (build 5, x86_64-pc-linux-gnu, GTK+ Version 3.24.41, cairo version 1.18.0) of 2024-09-03


-- 
📛 Christopher Howard
🚀 gemini://gem.librehacker.com
🌐 http://gem.librehacker.com

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bug#73052: emacs 30 ssh: couldn't find a proper `ls' command

[Christopher Howard]

I haven't been struggling with this issue for some months now. I can't remember exactly what I did, but I think the key was this tramp-own-remote-path option:

```
 '(tramp-remote-path
   '(tramp-own-remote-path tramp-default-remote-path "/bin" "/usr/bin"
                           "/sbin" "/usr/sbin" "/usr/local/bin"
                           "/usr/local/sbin" "/local/bin"
                           "/local/freeware/bin" "/local/gnu/bin"
                           "/usr/freeware/bin" "/usr/pkg/bin"
                           "/usr/contrib/bin" "/opt/bin" "/opt/sbin"
                           "/opt/local/bin" "/opt/homebrew/bin"
                           "/opt/homebrew/sbin"
                           "/run/current-system/profile/bin"))
```

-- 
Christopher Howard