gnu: casync: Update to 99559cd1.

* gnu/packages/sync.scm (casync): Update to 99559cd1.
[source]: Remove patch.
[arguments]: Fix installation.
[native-inputs]: Add python.
[inputs]: Add eudev.
* gnu/packages/patches/casync-renameat2-declaration.patch: Delete file.
* gnu/local.mk: Remove it.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/local.mk

@@ -926,7 +926,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/calibre-no-updates-dialog.patch		\
   %D%/packages/patches/calibre-remove-test-sqlite.patch		\
   %D%/packages/patches/calibre-remove-test-unrar.patch		\
-  %D%/packages/patches/casync-renameat2-declaration.patch	\
   %D%/packages/patches/catdoc-CVE-2017-11110.patch		\
   %D%/packages/patches/circos-remove-findbin.patch		\
   %D%/packages/patches/cdparanoia-fpic.patch			\

gnu/packages/patches/casync-renameat2-declaration.patch

@@ -1,27 +0,0 @@
-Fix build failure on glibc 2.28 where 'renameat2' would end up being
-declared twice: <https://github.com/systemd/casync/issues/166>.
-
-From 625244ca47e8ee1375d2d0092271bfd13b0913ea Mon Sep 17 00:00:00 2001
-From: Daniel Mack <daniel@zonque.org>
-Date: Tue, 13 Nov 2018 17:52:48 +0100
-Subject: [PATCH] meson.build: pass -D_GNU_SOURCE when checking for functions
-
-As described in #166, -D_GNU_SOURCE needs to be passed to the meson function
-availability checker. h/t to @tomeon for providing a link to the solution as
-well.
----
- meson.build | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/meson.build b/meson.build
-index f42ed16..c0f741e 100644
---- a/meson.build
-+++ b/meson.build
-@@ -78,6 +78,6 @@ foreach ident : [
-         ['copy_file_range',   '''#include <sys/syscall.h>
-                                  #include <unistd.h>'''],
- ]
--        have = cc.has_function(ident[0], prefix : ident[1])
-+        have = cc.has_function(ident[0], args : '-D_GNU_SOURCE', prefix : ident[1])
-         conf.set10('HAVE_' + ident[0].to_upper(), have)
- endforeach

gnu/packages/sync.scm

@@ -451,29 +451,36 @@ written in @command{scsh}.  It makes use of @command{unison} and
       (license license:expat))))
 
 (define-public casync
+  (let ((commit "99559cd1d8cea69b30022261b5ed0b8021415654")
+        (revision "0"))
     (package
       (name "casync")
-    (version "2")
+      (version (git-version "2" revision commit))
       (home-page "https://github.com/systemd/casync/")
       (source (origin
                 (method git-fetch)
                 (uri (git-reference
                       (url home-page)
-                    (commit (string-append "v" version))))
+                      (commit commit)))
                 (sha256
                  (base32
-                "0znkp3fcksrykcsv06y2mjvf2lbwmin25snmvfa8i5qfm3f4rm88"))
+                  "139g82rkwv1kzss6crfmw3p01xnyjzz66b1ckprpbfncxb24047w"))
-              (file-name (string-append name "-" version "-checkout"))
+                (file-name (string-append name "-" version "-checkout"))))
-              (patches (search-patches "casync-renameat2-declaration.patch"))))
       (build-system meson-build-system)
+      (arguments
+       `(#:configure-flags
+         (let ((out (assoc-ref %outputs "out")))
+           (list (string-append "-Dudevrulesdir="
+                                out "/lib/udev/rules.d")))))
       (native-inputs
-     (list pkg-config python-sphinx rsync))                         ;for tests
+       (list pkg-config python python-sphinx rsync))                  ;for tests
       (inputs
        (list xz ;for liblzma
              `(,zstd "lib")
              curl
              acl
              libselinux
+             eudev
              fuse
              openssl
              zlib))
@@ -490,7 +497,7 @@ large file systems or directory trees;
 over the Internet in an HTTP and CDN friendly way;
 @item An efficient backup system.
 @end itemize\n")
-    (license license:lgpl2.1+)))
+      (license license:lgpl2.1+))))
 
 (define-public rclone
   (package