From 20645d8467852990413c1ea9cf81cec82d23defd Mon Sep 17 00:00:00 2001
From: Andrew Tropin <andrew@trop.in>
Date: Tue, 29 Mar 2022 12:47:39 +0300
Subject: home: Add home-xdg-data-files-service-type.
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* gnu/home/services.scm (home-xdg-data-files-service-type): New variable.
* gnu/home/services/symlink-manager.scm (update-symlinks-script): Add a proper
handling for XDG_DATA_HOME value.
* gnu/home/services/xdg.scm (home-xdg-mime-applications-service-type): Use
home-xdg-data-files service.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
---
 gnu/home/services/symlink-manager.scm | 25 ++++++++++++++++++-------
 gnu/home/services/xdg.scm             |  5 +++--
 2 files changed, 21 insertions(+), 9 deletions(-)

(limited to 'gnu/home/services')

diff --git a/gnu/home/services/symlink-manager.scm b/gnu/home/services/symlink-manager.scm
index b7a66c5518..24d21bfad3 100644
--- a/gnu/home/services/symlink-manager.scm
+++ b/gnu/home/services/symlink-manager.scm
@@ -54,6 +54,10 @@
            (or (getenv "XDG_CONFIG_HOME")
                (string-append (getenv "HOME") "/.config")))
 
+         (define xdg-data-home
+           (or (getenv "XDG_DATA_HOME")
+               (string-append (getenv "HOME") "/.local/share")))
+
          (define backup-directory
            (string-append home-directory "/" (number->string (current-time))
                           "-guix-home-legacy-configs-backup"))
@@ -61,13 +65,20 @@
          (define (preprocess-file file)
            "If file is in XDG-CONFIGURATION-FILES-DIRECTORY use
 subdirectory from XDG_CONFIG_HOME to generate a target path."
-           (if (string-prefix? #$xdg-configuration-files-directory file)
-               (string-append
-                (substring xdg-config-home
-                           (1+ (string-length home-directory)))
-                (substring file
-                           (string-length #$xdg-configuration-files-directory)))
-               file))
+           (cond
+            ((string-prefix? #$xdg-configuration-files-directory file)
+             (string-append
+              (substring xdg-config-home
+                         (1+ (string-length home-directory)))
+              (substring file
+                         (string-length #$xdg-configuration-files-directory))))
+            ((string-prefix? #$xdg-data-files-directory file)
+             (string-append
+              (substring xdg-data-home
+                         (1+ (string-length home-directory)))
+              (substring file
+                         (string-length #$xdg-data-files-directory))))
+            (else file)))
 
          (define (target-file file)
            ;; Return the target of FILE, a config file name sans leading dot
diff --git a/gnu/home/services/xdg.scm b/gnu/home/services/xdg.scm
index 3b504d7d09..71c028c788 100644
--- a/gnu/home/services/xdg.scm
+++ b/gnu/home/services/xdg.scm
@@ -421,7 +421,8 @@ that the application cannot open the specified MIME type.")
   (define (add-xdg-desktop-entry-file entry)
     (let ((file (first entry))
           (config (second entry)))
-      (list (format #f ".local/share/applications/~a" file)
+      ;; TODO: Use xdg-data-files instead of home-files here
+      (list (format #f "applications/~a" file)
           (apply mixed-text-file
                  (format #f "xdg-desktop-~a-entry" file)
                  config))))
@@ -468,7 +469,7 @@ that the application cannot open the specified MIME type.")
   (service-type (name 'home-xdg-mime-applications)
                 (extensions
                  (list (service-extension
-                        home-files-service-type
+                        home-xdg-data-files-service-type
                         home-xdg-mime-applications-files)
                        (service-extension
                         home-xdg-configuration-files-service-type
-- 
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