doc/bugs/Build_error_when_S3_is_disabled.mdwn

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+With release 5.20141203, I'm getting the following build error.
+
+    Remote/Helper/AWS.hs:15:18:
+        Could not find module ‘Aws’
+        Use -v to see a list of the files searched for.
+
+    Remote/Helper/AWS.hs:16:18:
+        Could not find module ‘Aws.S3’
+        Use -v to see a list of the files searched for.
+
+I'm installing dependencies with cabal but have disabled S3 support
+('-f-S3').  This setup has worked for previous releases (I'm on a machine running Arch Linux).
+
+    _features=(-f-Android
+               -f-Assistant
+               -fDbus
+               -fDNS
+               -fInotify
+               -fPairing
+               -fProduction
+               -f-S3
+               -fTestSuite
+               -fTDFA
+               -f-Webapp
+               -f-WebDAV
+               -fXMPP
+               -fFeed
+               -fQuvi
+               -fCryptoHash)
+
+    cabal update
+    cabal install c2hs
+
+    cabal install --user --force-reinstalls --only-dependencies "${_features[@]}"
+    cabal configure "${_features[@]}"
+
+    make