libe-book: build with latest icu version

Fix compatibility with the latest icu version and refactor the
derivation slightly.

Updates the fetcher to use the sourceforge mirror over the unresolvable
kent mirror.

Remove icu58 workaround, it is not required anymore.

pkgs/development/libraries/libe-book/default.nix

@@ -15,11 +15,20 @@
 stdenv.mkDerivation rec {
   pname = "libe-book";
   version = "0.1.3";
+
   src = fetchurl {
-    url = "https://kent.dl.sourceforge.net/project/libebook/libe-book-${version}/libe-book-${version}.tar.xz";
-    sha256 = "sha256-fo2P808ngxrKO8b5zFMsL5DSBXx3iWO4hP89HjTf4fk=";
+    url = "mirror://sourceforge/libebook/libe-book-${version}/libe-book-${version}.tar.xz";
+    hash = "sha256-fo2P808ngxrKO8b5zFMsL5DSBXx3iWO4hP89HjTf4fk=";
   };
+
+  # restore compatibility with icu68+
+  postPatch = ''
+    substituteInPlace src/lib/EBOOKCharsetConverter.cpp --replace \
+      "TRUE, TRUE, &status)" \
+      "true, true, &status)"
+  '';
   nativeBuildInputs = [ pkg-config ];
+
   buildInputs = [
     gperf
     librevenge
@@ -30,12 +39,9 @@ stdenv.mkDerivation rec {
     zlib
     liblangtag
   ];
-  # Boost 1.59 compatibility fix
-  # Attempt removing when updating
-  postPatch = ''
-    sed -i 's,^CPPFLAGS.*,\0 -DBOOST_ERROR_CODE_HEADER_ONLY -DBOOST_SYSTEM_NO_DEPRECATED,' src/lib/Makefile.in
-  '';
+
   env.NIX_CFLAGS_COMPILE = "-Wno-error=unused-function";
+
   meta = with lib; {
     description = "Library for import of reflowable e-book formats";
     license = licenses.lgpl21Plus;

pkgs/top-level/all-packages.nix

@@ -22040,9 +22040,7 @@ with pkgs;
 
   liblscp = callPackage ../development/libraries/liblscp { };
 
-  libe-book = callPackage ../development/libraries/libe-book {
-    icu = icu67;
-  };
+  libe-book = callPackage ../development/libraries/libe-book { };
 
   libemf2svg = callPackage ../development/libraries/libemf2svg { };