transmission: update to 2.77, but leave the old 2.60 for its gtk client

The gtk client in 2.61 and above require a gtk3 we don't have in nixpkgs yet.

pkgs/applications/networking/p2p/transmission/2.60.nix

@@ -0,0 +1,41 @@
+{ stdenv, fetchurl, pkgconfig, openssl, curl, intltool, libevent,
+  file, inotifyTools, gtk ? null }:
+
+stdenv.mkDerivation rec {
+  name = "transmission-2.60"; # transmission >= 2.61 requires gtk3
+
+  src = fetchurl {
+    url = "http://download.transmissionbt.com/files/${name}.tar.xz";
+    sha256 = "1ramdliyy8j7qqpkxg643lda11ynxwfhq6qcs31fr3h9x72l0rg4";
+  };
+
+  buildInputs = [ pkgconfig openssl curl intltool libevent
+                  file inotifyTools gtk ];
+
+  preConfigure = ''
+    sed -i -e 's|/usr/bin/file|${file}/bin/file|g' configure
+  '';
+
+  postInstall = ''
+    rm -f $out/share/icons/hicolor/icon-theme.cache
+  '';
+
+  meta = {
+    description = "A fast, easy and free BitTorrent client";
+    longDescription = ''
+      Transmission is a BitTorrent client which features a simple interface
+      on top of a cross-platform back-end.
+      Feature spotlight:
+        * Uses fewer resources than other clients
+        * Native Mac, GTK+ and Qt GUI clients
+        * Daemon ideal for servers, embedded systems, and headless use
+        * All these can be remote controlled by Web and Terminal clients
+        * Bluetack (PeerGuardian) blocklists with automatic updates
+        * Full encryption, DHT, and PEX support
+    '';
+    homepage = http://www.transmissionbt.com/;
+    license = [ "GPLv2" ];
+    maintainers = [ stdenv.lib.maintainers.astsmtl ];
+    platforms = stdenv.lib.platforms.linux;
+  };
+}

pkgs/applications/networking/p2p/transmission/default.nix

@@ -1,12 +1,15 @@
-{ stdenv, fetchurl, pkgconfig, openssl, curl, intltool, libevent,
-  file, inotifyTools, gtk ? null }:
+{ stdenv, fetchurl, pkgconfig, openssl, curl, intltool, libevent
+, file, inotifyTools
+, enableGtk ? false, gtk ? null }:
+
+assert enableGtk -> gtk != null;
 
 stdenv.mkDerivation rec {
-  name = "transmission-2.60"; # transmission >= 2.61 requires gtk3
+  name = "transmission-2.77"; # transmission >= 2.61 requires gtk3
 
   src = fetchurl {
     url = "http://download.transmissionbt.com/files/${name}.tar.xz";
-    sha256 = "1ramdliyy8j7qqpkxg643lda11ynxwfhq6qcs31fr3h9x72l0rg4";
+    sha256 = "1phzhj4wds6r2ziclva1b5l6l9xjsx5ji7s3m4xia44aq4znbcam";
   };
 
   buildInputs = [ pkgconfig openssl curl intltool libevent
@@ -16,6 +19,8 @@ stdenv.mkDerivation rec {
     sed -i -e 's|/usr/bin/file|${file}/bin/file|g' configure
   '';
 
+  configureFlags = stdenv.lib.optional enableGtk "--with-gtk";
+
   postInstall = ''
     rm -f $out/share/icons/hicolor/icon-theme.cache
   '';

pkgs/top-level/all-packages.nix

@@ -7860,6 +7860,9 @@ let
     wrapPython = pythonPackages.wrapPython;
   };
 
+  # This builds the gtk client
+  transmission_260 = callPackage ../applications/networking/p2p/transmission/2.60.nix { };
+
   transmission = callPackage ../applications/networking/p2p/transmission { };
 
   transmission_remote_gtk = callPackage ../applications/networking/p2p/transmission-remote-gtk {};