bug#74787: guile-ssh@0.18 breaks offloading

bug#74787: guile-ssh@0.18 breaks offloading

[Dariqq]

Hello,

Today I reconfigured my system and after a reboot offloading no longer 
works.

When i try to build something that could be offloaded it instead tries 
to build it locally instead and fails with

unsupported-platform
while setting up the build environment: a `*' is required to build `*', 
but I am a `*'

However 'guix offload test' is still succeeding

--8<---------------cut here---------------start------------->8---
sudo guix offload test

guix offload: testing 1 build machines defined in 
'/etc/guix/machines.scm'...
guix offload: Guix is usable on '*' (test returned "/gnu/store/*-test")
guix offload: '*' is running GNU Guile 3.0.9
guix offload: sending 1 store item (0 MiB) to '*'...
exporting path `/gnu/store/*-export-test'
guix offload: '*' successfully imported '/gnu/store/*-export-test'
retrieving 1 store item from '*'...
guix offload: successfully imported '/gnu/store/*-import-test' from '*'

--8<---------------cut here---------------end--------------->8---


I tracked this down to the guile-ssh update in 
da3c8a963f83c044568d99921480259eaa26a923

Reverting that restores offloading for me.


This might also be the cause for the 'guix deploy' error described in 
https://logs.guix.gnu.org/guix/2024-12-11.log#033439

bug#74787: [PATCH] remote: Do not double-quote the repl-command.

[Tomas Volf]

In 0.18.0, the `open-remote-pipe*' now correctly quotes the arguments, so the
double quoting that was done by `shell-quote' is not harmful and breaks at
least offloading and deploy.

* guix/remote.scm (remote-pipe-for-gexp): Call object->string just once.

Change-Id: Id922d26d318bfdd4714e267687c1b27461196d90
---
I checked all places where the changed procedures are used and those look
correct.  Nothing else in the NEWS file for 0.18.0 jumps out as a potential
issue.

 guix/remote.scm | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/guix/remote.scm b/guix/remote.scm
index a58ec2103c..9423f9af12 100644
--- a/guix/remote.scm
+++ b/guix/remote.scm
@@ -48,9 +48,6 @@ (define-module (guix remote)
 (define* (remote-pipe-for-gexp lowered session #:optional become-command)
   "Return a remote pipe for the given SESSION to evaluate LOWERED.  If
 BECOME-COMMAND is given, use that to invoke the remote Guile REPL."
-  (define shell-quote
-    (compose object->string object->string))
-
   (define repl-command
     (append (or become-command '())
             (list
@@ -65,7 +62,7 @@ (define* (remote-pipe-for-gexp lowered session #:optional become-command)
                           `("-C" ,directory))
                         (lowered-gexp-load-path lowered))
             `("-c"
-              ,(shell-quote (lowered-gexp-sexp lowered)))))
+              ,(object->string (lowered-gexp-sexp lowered)))))

   (let ((pipe (apply open-remote-pipe* session OPEN_READ repl-command)))
     (when (eof-object? (peek-char pipe))
--
2.46.0

bug#74787: guile-ssh@0.18 breaks offloading

[Dariqq]

Another problem (other than the open-input-pipe* change) related to the 
guile-ssh update is that the GUIX_CHECK_GUILE_SSH macro now fails 
resulting in the guix-daemon not having offload support. I openend 
https://issues.guix.gnu.org/74800 for this