Subject: bug#40114: closed (Re: [bug#40114] [PATCH] services: Add fontconfig-file-system-service.)

From: [email-masked] (GNU bug Tracking System)
Date: Sun, 22 Mar 2020 07:11:02 +0000

Your bug report

#40114: [PATCH] services: Add fontconfig-file-system-service.

which was filed against the guix-patches package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to [email-masked].

-- 
40114: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=40114
GNU Bug Tracking System
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Subject: Re: [bug#40114] [PATCH] services: Add fontconfig-file-system-service.
From: Efraim Flashner <[email-masked]>
To: Ludovic Courtès <[email-masked]>
Cc: [email-masked]
Date: Sun, 22 Mar 2020 09:09:29 +0200
List-Id: <debbugs-submit.debbugs.gnu.org>

On Sat, Mar 21, 2020 at 10:53:50PM +0100, Ludovic Courtès wrote:
> Hello!
> 
> Efraim Flashner <[email-masked]> skribis:
> 
> > * gnu/services/desktop.scm (%fontconfig-file-system,
> > fontconfig-file-system-service): New variables.
> > (%desktop-services): Add fontconfig-file-system-service.
> 
> [...]
> 
> > +(define %fontconfig-file-system
> > +  (file-system
> > +    (device "none")
> > +    (mount-point "/var/cache/fontconfig")
> > +    (type "tmpfs")
> > +    (flags '(read-only))
> > +    (check? #f)))
> > +
> > +;; The global fontconfig directory is unused in Guix and has been
> > +;; known to cause problems so we mount it read-only.
> 
> What about something like:
> 
>   ;; The global fontconfig cache directory can sometimes contain stale
>   ;; entries, possibly referencing fonts that have been GC’d, so mount
>   ;; it read-only.
> 
> I think that’s a correct summary?  Perhaps we could link to past
> discussions if we have one.

I didn't find a canonical bug report but it was mentioned in several in
the past. I added references to two of them.

> 
> Otherwise LGTM, thank you!
> 
> Ludo’.

Thanks. Patch pushed.

-- 
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Subject: [PATCH] services: Add fontconfig-file-system-service.
From: Efraim Flashner <[email-masked]>
To: [email-masked]
Cc: Efraim Flashner <[email-masked]>
Date: Wed, 18 Mar 2020 12:46:26 +0200
List-Id: <debbugs-submit.debbugs.gnu.org>

* gnu/services/desktop.scm (%fontconfig-file-system,
fontconfig-file-system-service): New variables.
(%desktop-services): Add fontconfig-file-system-service.
---

I've been using a tmpfs mounted read-only at /var/cache/fontconfig for
months now without any problems. This adds it to %desktop-services.

---
 gnu/services/desktop.scm | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/gnu/services/desktop.scm b/gnu/services/desktop.scm
index 1294d748ac..848ed25e3c 100644
--- a/gnu/services/desktop.scm
+++ b/gnu/services/desktop.scm
@@ -5,7 +5,7 @@
 ;;; Copyright © 2016 Sou Bunnbu <[email-masked]>
 ;;; Copyright © 2017 Maxim Cournoyer <[email-masked]>
 ;;; Copyright © 2017 ng0 <[email-masked]>
-;;; Copyright © 2018 Efraim Flashner <[email-masked]>
+;;; Copyright © 2018, 2020 Efraim Flashner <[email-masked]>
 ;;; Copyright © 2018 Ricardo Wurmus <[email-masked]>
 ;;; Copyright © 2017, 2019 Christopher Baines <[email-masked]>
 ;;; Copyright © 2019 Tim Gesthuizen <[email-masked]>
@@ -36,7 +36,7 @@
   #:use-module (gnu services networking)
   #:use-module (gnu services sound)
   #:use-module ((gnu system file-systems)
-                #:select (%elogind-file-systems))
+                #:select (%elogind-file-systems file-system))
   #:use-module (gnu system)
   #:use-module (gnu system shadow)
   #:use-module (gnu system pam)
@@ -106,6 +106,8 @@
             elogind-service
             elogind-service-type
 
+            fontconfig-file-system-service
+
             accountsservice-service-type
             accountsservice-service
 
@@ -797,6 +799,25 @@ when they log out."
 
 
 ;;;
+;;; Fontconfig and other desktop file-systems.
+;;;
+
+(define %fontconfig-file-system
+  (file-system
+    (device "none")
+    (mount-point "/var/cache/fontconfig")
+    (type "tmpfs")
+    (flags '(read-only))
+    (check? #f)))
+
+;; The global fontconfig directory is unused in Guix and has been
+;; known to cause problems so we mount it read-only.
+(define fontconfig-file-system-service
+  (simple-service 'fontconfig-file-system
+                  file-system-service-type
+                  (list %fontconfig-file-system)))
+
+;;;
 ;;; AccountsService service.
 ;;;
 
@@ -1185,6 +1206,10 @@ or setting its password with passwd.")))
          ;; perform administrative tasks (similar to "sudo").
          polkit-wheel-service
 
+         ;; The global fontconfig directory is unused in Guix and has been
+         ;; known to cause problems so we mount it read-only.
+         fontconfig-file-system-service
+
          ;; NetworkManager and its applet.
          (service network-manager-service-type)
          (service wpa-supplicant-service-type)    ;needed by NetworkManager
-- 
2.25.1