GNU bug report logs - #51346
[PATCH 0/1 core-updates-frozen] Rework swap device to add dependencies and flags

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From: Josselin Poiret <dev <at> jpoiret.xyz>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: Josselin Poiret <dev <at> jpoiret.xyz>, Tobias Geerinckx-Rice <me <at> tobias.gr>, 51346 <at> debbugs.gnu.org
Subject: [bug#51346] [PATCH v3 2/5] gnu: system: Warn about swap-devices format change
Date: Mon, 15 Nov 2021 20:26:28 +0000

* gnu/system.scm (warn-swap-devices-change,
%warn-swap-devices-change): Add them.
* gnu/system.scm (operating-system) [swap-devices]: Use it.
---
 gnu/system.scm | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/gnu/system.scm b/gnu/system.scm
index fd556e1e7c..76a904b681 100644
--- a/gnu/system.scm
+++ b/gnu/system.scm
@@ -235,6 +235,8 @@ (define-record-type* <operating-system> operating-system
   (file-systems operating-system-file-systems)    ; list of fs
   (swap-devices operating-system-swap-devices     ; list of string | <swap-space>
                 (default '())
+                (delayed)
+                (sanitize warn-swap-devices-change))
 
   (users operating-system-users                   ; list of user accounts
          (default %base-user-accounts))
@@ -583,6 +585,20 @@ (define (device-mapping-services os)
   (map device-mapping-service
        (operating-system-user-mapped-devices os)))
 
+(define-syntax-rule (warn-swap-devices-change value)
+  (%warn-swap-devices-change value (current-source-location)))
+
+(define (%warn-swap-devices-change value location)
+  (map (lambda (x)
+         (unless (swap-space? x)
+           (warning
+            (source-properties->location
+             location)
+            (G_ "List elements of the field 'swap-devices' should \
+now use the <swap-space> record, as the old method is deprecated. \
+See \"(guix) operating-system Reference\" for more details.~%")))
+         x) value))
+
 (define (swap-services os)
   "Return the list of swap services for OS."
   (map swap-service (operating-system-swap-devices os)))
-- 
2.33.1

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