machine: ssh: Do not import the host (guix config), really.

This is a followup to 70ffa8af1e93ab8a92c4622745e9cb4a2782f3c8, which
did not really solve the problem.

* gnu/machine/ssh.scm (not-config?): New procedure.
(machine-boot-parameters): Use it as an argument to
'source-module-closure'.

1 files changed, 13 insertions, 4 deletions

diff --git a/gnu/machine/ssh.scm b/gnu/machine/ssh.scm
index 08c653ba179..997d673e756 100644
--- a/gnu/machine/ssh.scm
+++ b/gnu/machine/ssh.scm
@@ -1,6 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2019 Jakob L. Kreuze <zerodaysfordays@sdf.org>
-;;; Copyright © 2020 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2020, 2021 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -346,6 +346,14 @@ by MACHINE."
 ;;; System deployment.
 ;;;
 
+(define not-config?
+  ;; Select (guix …) and (gnu …) modules, except (guix config).
+  (match-lambda
+    (('guix 'config) #f)
+    (('guix _ ...) #t)
+    (('gnu _ ...) #t)
+    (_ #f)))
+
 (define (machine-boot-parameters machine)
   "Monadic procedure returning a list of 'boot-parameters' for the generations
 of MACHINE's system profile, ordered from most recent to oldest."
@@ -354,9 +362,10 @@ of MACHINE's system profile, ordered from most recent to oldest."
 
   (define remote-exp
     (with-extensions (list guile-gcrypt)
-      (with-imported-modules (source-module-closure
-                              `(((guix config) => ,(make-config.scm))
-                                (guix profiles)))
+      (with-imported-modules `(((guix config) => ,(make-config.scm))
+                               ,@(source-module-closure
+                                  '((guix profiles))
+                                  #:select? not-config?))
         #~(begin
             (use-modules (guix config)
                          (guix profiles)