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02/04: system: Add helper file-system-mount-point-predicate.


From: guix-commits
Subject: 02/04: system: Add helper file-system-mount-point-predicate.
Date: Tue, 15 Feb 2022 04:31:46 -0500 (EST)

civodul pushed a commit to branch master
in repository guix.

commit 0055a803e204b8df98469413c6fbc8a8f730842c
Author: Josselin Poiret <dev@jpoiret.xyz>
AuthorDate: Sun Feb 6 22:20:44 2022 +0100

    system: Add helper file-system-mount-point-predicate.
    
    * gnu/system/file-systems.scm (file-system-mount-point-predicate): Add
    it.
    
    Signed-off-by: Ludovic Court├Ęs <ludo@gnu.org>
---
 gnu/system/file-systems.scm | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/gnu/system/file-systems.scm b/gnu/system/file-systems.scm
index e1d1fb72cc..437f8da898 100644
--- a/gnu/system/file-systems.scm
+++ b/gnu/system/file-systems.scm
@@ -60,6 +60,7 @@
             file-system-location
 
             file-system-type-predicate
+            file-system-mount-point-predicate
             btrfs-subvolume?
             btrfs-store-subvolume-file-name
 
@@ -671,6 +672,12 @@ system has the given TYPE."
   (lambda (fs)
     (string=? (file-system-type fs) type)))
 
+(define (file-system-mount-point-predicate mount-point)
+  "Return a predicate that, when passed a file system, returns #t if that file
+system has the given MOUNT-POINT."
+  (lambda (fs)
+    (string=? (file-system-mount-point fs) mount-point)))
+
 
 ;;;
 ;;; Btrfs specific helpers.



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