libchop: Attempt to fix bug in Guile bindings; augment the expression.

svn path=/nixpkgs/trunk/; revision=30417

pkgs/development/libraries/libchop/default.nix

@@ -1,26 +1,48 @@
-{ fetchurl, stdenv, zlib, bzip2, libgcrypt, gdbm, gperf, tdb, gnutls, db4,
-  libuuid, lzo, pkgconfig }:
+{ fetchurl, stdenv, zlib, bzip2, libgcrypt, gdbm, gperf, tdb, gnutls, db4
+, libuuid, lzo, pkgconfig, guile }:
 
 stdenv.mkDerivation rec {
   name = "libchop-0.5";
 
   src = fetchurl {
-    url = "http://download.savannah.gnu.org/releases/libchop/libchop-0.5.tar.gz";
+    url = "mirror://savannah/libchop/${name}.tar.gz";
     sha256 = "0i7gl0c99pf6794bbwm3iha6a0bciqq969mgwwv6gm9phiiy5s8b";
   };
 
-  buildInputs = [ zlib libgcrypt gdbm gperf bzip2 db4 tdb gnutls libuuid lzo
-    pkgconfig ];
+  patches = [ ./guile-ascii-deserialize.patch ];
+
+  buildNativeInputs = [ pkgconfig gperf ];
+  buildInputs =
+    [ zlib bzip2 lzo
+      libgcrypt
+      gdbm db4 tdb
+      gnutls libuuid
+      guile
+    ];
 
   doCheck = true;
 
   meta = {
-    description = "Set of utilities and library for data backup and distributed storage";
+    description = "libchop, tools & library for data backup and distributed storage";
+
+    longDescription =
+      '' Libchop is a set of utilities and library for data backup and
+         distributed storage.  Its main application is chop-backup, an
+         encrypted backup program that supports data integrity checks,
+         versioning at little cost, distribution among several sites,
+         selective sharing of stored data, adaptive compression, and more.
+         The library itself, which chop-backup builds upon, implements
+         storage techniques such as content-based addressing, content hash
+         keys, Merkle trees, similarity detection, and lossless compression.
+         It makes it easy to combine them in different ways.  The
+         ‘chop-archiver’ and ‘chop-block-server’ tools, illustrated in the
+         manual, provide direct access to these facilities from the command
+         line.  It is written in C and has Guile (Scheme) bindings.
+      '';
 
     homepage = http://nongnu.org/libchop/;
     license = "GPLv3+";
 
-    maintainers = [ stdenv.lib.maintainers.ludo
-      stdenv.lib.maintainers.viric ];
+    maintainers = with stdenv.lib.maintainers; [ ludo viric ];
   };
 }

pkgs/development/libraries/libchop/guile-ascii-deserialize.patch

@@ -0,0 +1,15 @@
+This fixes `deserialize-object/ascii'.
+
+diff --git a/guile2/chop/objects.scm b/guile2/chop/objects.scm
+index 1849195..1aa521d 100644
+--- a/guile2/chop/objects.scm
++++ b/guile2/chop/objects.scm
+@@ -133,7 +133,7 @@
+ 
+ (define (deserialize-object/ascii class str)
+   "Deserialize STR and return a new instance of CLASS that corresponds."
+-  (%deserialize-object class (string->utf8 str) %ascii))
++  (%deserialize-object class (string->pointer str) %ascii))
+ 
+ (define (deserialize-object/binary class bv)
+   "Deserialize BV and return a new instance of CLASS that corresponds."