From d5eb05f01ea59da8435e9df4f15835edbb31a30e Mon Sep 17 00:00:00 2001
From: Xinglu Chen <public@yoctocell.xyz>
Date: Sat, 30 Oct 2021 12:42:27 +0200
Subject: guix home: import: Make the user to specify a destination directory.
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Copy the appropriate the relevant configuration files to the destination
directory, and call ‘local-file’ on them.

Without this, ‘guix home import’ will generate a service declaration like this

  (service
   home-bash-service-type
   (home-bash-configuration
    (bashrc
     (list (slurp-file-gexp
            (local-file "/home/yoctocell/.bashrc"))))))

but when running ‘guix home reconfigure’, the ~/.bashrc file would be moved, so
when running ‘guix home reconfigure’ for the second time, it would read the
~/.bashrc which is itself a symlink to a file the store.

* guix/scripts/home/import.scm (generate-bash-module+configuration): Take
‘destination-directory’ parameter
(modules+configurations): Copy the user’s configuration file to
‘%destination-directory’.
* guix/scripts/home.scm (process-command): Adjust accordingly; create
‘destination’ if it doesn’t exist.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
---
 guix/scripts/home.scm | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

(limited to 'guix/scripts/home.scm')

diff --git a/guix/scripts/home.scm b/guix/scripts/home.scm
index 55e7b436c1..3f48b98ed4 100644
--- a/guix/scripts/home.scm
+++ b/guix/scripts/home.scm
@@ -40,6 +40,7 @@
   #:autoload   (guix scripts pull) (channel-commit-hyperlink)
   #:use-module (guix scripts home import)
   #:use-module ((guix status) #:select (with-status-verbosity))
+  #:use-module ((guix build utils) #:select (mkdir-p))
   #:use-module (guix gexp)
   #:use-module (guix monads)
   #:use-module (srfi srfi-1)
@@ -260,15 +261,20 @@ argument list and OPTS is the option alist."
      (apply search args))
     ((import)
      (let* ((profiles (delete-duplicates
-                      (match (filter-map (match-lambda
-                                           (('profile . p) p)
-                                           (_              #f))
-                                         opts)
-                        (() (list %current-profile))
-                        (lst (reverse lst)))))
-           (manifest (concatenate-manifests
-                      (map profile-manifest profiles))))
-       (import-manifest manifest (current-output-port))))
+                       (match (filter-map (match-lambda
+                                            (('profile . p) p)
+                                            (_              #f))
+                                          opts)
+                         (() (list %current-profile))
+                         (lst (reverse lst)))))
+            (manifest (concatenate-manifests
+                       (map profile-manifest profiles)))
+            (destination (match args
+                           ((destination) destination)
+                           (_ (leave (G_ "wrong number of arguments~%"))))))
+       (unless (file-exists? destination)
+         (mkdir-p destination))
+       (import-manifest manifest destination (current-output-port))))
     ((describe)
      (match (generation-number %guix-home)
        (0
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