gnu: gajim: Add python2-axolotl to inputs.

[jackhill/guix/guix.git] / gnu / system / file-systems.scm

diff --git a/gnu/system/file-systems.scm b/gnu/system/file-systems.scm
index 7011a27..27734e8 100644 (file)
--- a/gnu/system/file-systems.scm
+++ b/gnu/system/file-systems.scm
@@ -18,11 +18,12 @@
 
 (define-module (gnu system file-systems)
   #:use-module (ice-9 match)
+  #:use-module (rnrs bytevectors)
   #:use-module (srfi srfi-1)
   #:use-module (guix records)
-  #:use-module ((gnu build file-systems)
-                #:select (string->uuid uuid->string))
-  #:re-export (string->uuid
+  #:use-module (gnu system uuid)
+  #:re-export (uuid                               ;backward compatibility
+               string->uuid
                uuid->string)
   #:export (<file-system>
             file-system
@@ -38,11 +39,13 @@
             file-system-check?
             file-system-create-mount-point?
             file-system-dependencies
+            file-system-location
+
+            file-system-type-predicate
 
             file-system->spec
             spec->file-system
             specification->file-system-mapping
-            uuid
 
             %fuse-control-file-system
             %binary-format-file-system
@@ -73,6 +76,9 @@
 ;;;
 ;;; Declaring file systems to be mounted.
 ;;;
+;;; Note: this file system is used both in the Shepherd and on the "host
+;;; side", so it must not include (gnu packages …) modules.
+;;;
 ;;; Code:
 
 ;; File system declaration.
@@ -97,7 +103,10 @@
   (create-mount-point? file-system-create-mount-point? ; Boolean
                        (default #f))
   (dependencies     file-system-dependencies      ; list of <file-system>
-                    (default '())))               ; or <mapped-device>
+                    (default '()))                ; or <mapped-device>
+  (location         file-system-location
+                    (default (current-source-location))
+                    (innate)))
 
 ;; Note: This module is used both on the build side and on the host side.
 ;; Arrange not to pull (guix store) and (guix config) because the latter
@@ -152,14 +161,22 @@ store--e.g., if FS is the root file system."
 initrd code."
   (match fs
     (($ <file-system> device title mount-point type flags options _ _ check?)
-     (list device title mount-point type flags options check?))))
+     (list (if (uuid? device)
+               `(uuid ,(uuid-type device) ,(uuid-bytevector device))
+               device)
+           title mount-point type flags options check?))))
 
 (define (spec->file-system sexp)
   "Deserialize SEXP, a list, to the corresponding <file-system> object."
   (match sexp
     ((device title mount-point type flags options check?)
      (file-system
-       (device device) (title title)
+       (device (match device
+                 (('uuid (? symbol? type) (? bytevector? bv))
+                  (bytevector->uuid bv type))
+                 (_
+                  device)))
+       (title title)
        (mount-point mount-point) (type type)
        (flags flags) (options options)
        (check? check?)))))
@@ -181,20 +198,6 @@ TARGET in the other system."
          (target spec)
          (writable? writable?)))))
 
-(define-syntax uuid
-  (lambda (s)
-    "Return the bytevector corresponding to the given UUID representation."
-    (syntax-case s ()
-      ((_ str)
-       (string? (syntax->datum #'str))
-       ;; A literal string: do the conversion at expansion time.
-       (let ((bv (string->uuid (syntax->datum #'str))))
-         (unless bv
-           (syntax-violation 'uuid "invalid UUID" s))
-         (datum->syntax #'str bv)))
-      ((_ str)
-       #'(string->uuid str)))))
-
 \f
 ;;;
 ;;; Common file systems.
@@ -411,4 +414,10 @@ a bind mount."
                  (writable? (string=? file "/etc/resolv.conf"))))
               %network-configuration-files))
 
+(define (file-system-type-predicate type)
+  "Return a predicate that, when passed a file system, returns #t if that file
+system has the given TYPE."
+  (lambda (fs)
+    (string=? (file-system-type fs) type)))
+
 ;;; file-systems.scm ends here