Require at least HTTP-4000.2.5

Prior versions didn't include an upper bound on network and might
therefore cause build failures as the relativeTo function was changed
in network-2.4.0.0.

cabal-install/bootstrap.sh

@@ -132,8 +132,8 @@ TRANS_VER="0.3.0.0";   TRANS_VER_REGEXP="0\.[23]\."
                        # >= 0.2.* && < 0.4.*
 MTL_VER="2.1.2";       MTL_VER_REGEXP="[2]\."
                        #  == 2.*
-HTTP_VER="4000.2.10";  HTTP_VER_REGEXP="4000\.[012]\."
-                       # == 4000.0.* || 4000.1.* || 4000.2.*
+HTTP_VER="4000.2.10";  HTTP_VER_REGEXP="4000\.2\.[5-9]"
+                       # >= 4000.2.5 < 4000.3
 ZLIB_VER="0.5.4.1";    ZLIB_VER_REGEXP="0\.[45]\."
                        # == 0.4.* || == 0.5.*
 TIME_VER="1.4.1"       TIME_VER_REGEXP="1\.[1234]\.?"

cabal-install/cabal-install.cabal

@@ -123,7 +123,7 @@ executable cabal
         Cabal      >= 1.20.0   && < 1.21,
         containers >= 0.1      && < 0.6,
         filepath   >= 1.0      && < 1.4,
-        HTTP       >= 4000.0.8 && < 4001,
+        HTTP       >= 4000.2.5 && < 4002.3,
         mtl        >= 2.0      && < 3,
         network    >= 1        && < 3,
         pretty     >= 1        && < 1.2,