diff --git a/src/Webcrank.hs b/src/Webcrank.hs
--- a/src/Webcrank.hs
+++ b/src/Webcrank.hs
@@ -18,6 +18,8 @@
   , HaltT
   , halt
   , werror
+  , werrorWith
+  , getDispatchPath
     -- * Charsets
   , Charset
   , CharsetsProvided(..)
@@ -177,3 +179,10 @@
 writeStr = assign reqDataRespBody . Just . strBody
 {-# INLINE writeStr #-}
 
+-- | The “local” path of the resource URI; the part
+-- after any prefix used in dispatch configuration.
+-- Of the three path accessors, this is the one you usually want.
+-- This is also the one that will change after postAction is called
+-- in your resource.
+getDispatchPath :: (MonadState s m, HasReqData s) => m [Text]
+getDispatchPath = use reqDataDispPath
diff --git a/src/Webcrank/Internal/Halt.hs b/src/Webcrank/Internal/Halt.hs
--- a/src/Webcrank/Internal/Halt.hs
+++ b/src/Webcrank/Internal/Halt.hs
@@ -24,6 +24,11 @@
 -- @500 Internal Server Error@ response. The response body will contain the
 -- reason.
 werror :: Monad m => LB.ByteString -> HaltT m a
-werror = HaltT . left . Error internalServerError500
+werror = werrorWith internalServerError500
 {-# INLINE werror #-}
 
+-- | Immediately end processing of this request, returning a response
+-- with the given @Status@. The response body will contain the reason.
+werrorWith :: Monad m => Status -> LB.ByteString -> HaltT m a
+werrorWith s = HaltT . left . Error s
+{-# INLINE werrorWith #-}
diff --git a/webcrank.cabal b/webcrank.cabal
--- a/webcrank.cabal
+++ b/webcrank.cabal
@@ -1,5 +1,5 @@
 name:               webcrank
-version:            0.1
+version:            0.2
 license:            BSD3
 license-file:       LICENSE
 author:             Mark Hibberd <mark@hibberd.id.au>
@@ -7,8 +7,8 @@
 copyright:          (c) 2012 Mark Hibberd
 synopsis:           Webmachine inspired toolkit for building http applications and services.
 category:           Web
-homepage:           https://github.com/webcrank/webcrank
-bug-reports:        https://github.com/webcrank/webcrank/issues
+homepage:           https://github.com/webcrank/webcrank.hs
+bug-reports:        https://github.com/webcrank/webcrank.hs/issues
 cabal-version:      >= 1.8
 build-type:         Simple
 description:
@@ -23,7 +23,7 @@
 
 library
   build-depends:    attoparsec                      >=0.10 && <0.13
-                  , base                            >= 4.6 && < 5
+                  , base                            >=4.6 && < 5
                   , blaze-builder                   >=0.2.1.4 && <0.4
                   , bytestring                      >=0.9.1.10 && <0.11
                   , case-insensitive                >=0.3 && <1.3
@@ -32,8 +32,7 @@
                   , http-date                       >=0.0.1 && <0.1
                   , http-media                      >=0.4.0 && <0.7
                   , http-types                      >=0.8.0 && <0.9
-                  , network-uri                     >=2.5.0 && <2.7
-                  , lens                            >=4.5 && <4.9
+                  , lens                            >=4.5 && <5
                   , mtl                             >=2.0.1 && <2.3
                   , semigroups                      >=0.8.4 && <1
                   , text                            >=0.11 && <1.3
@@ -67,8 +66,7 @@
 
   hs-source-dirs:   test
 
-  build-depends:    QuickCheck       >= 2.4
-                  , tasty            >= 0.3
+  build-depends:    tasty            >= 0.3
                   , tasty-hunit      >= 0.2
                   , tasty-quickcheck >= 0.3
 
@@ -76,12 +74,11 @@
                   , base                            >=4.6 && < 5
                   , bytestring                      >=0.9.1.10 && <0.11
                   , case-insensitive                >=0.3 && <1.3
-                  , either                          >=3.1 && <5
                   , exceptions                      >=0.1.1 && <1
                   , http-date                       >=0.0.1 && <0.1
                   , http-media                      >=0.4.0 && <0.7
                   , http-types                      >=0.8.0 && <0.9
-                  , lens                            >=4.5 && <4.9
+                  , lens                            >=4.5 && <5
                   , mtl                             >=2.0.1 && <2.3
                   , unordered-containers            ==0.2.*
                   , webcrank