Hi, All these bugs are against the homeomorphic library I have written. To play along, you can do darcs get --partial http://www.cs.york.ac.uk/fp/darcs/homeomorphic Bug 1: cabal install worked the first time, running it a second time fails. $ cabal install .. works.. $ cabal install .. configuring ... setupWrapper in Nothing : ["build"] Preprocessing library homeomorphic-0.1... Building homeomorphic-0.1... E:\ghc\ghc-6.8.2\bin\ar.exe: creating dist\build\libHShomeomorphic-0.1.a setupWrapper in Nothing : ["install"] cabal: Error: some packages failed to install: homeomorphic-0.1 failed during the final install step. Bug 2: cabal haddock fails $ cabal haddock Preprocessing library homeomorphic-0.1... Running Haddock for homeomorphic-0.1... Warning: The documentation for the following packages are not installed. No links will be generated to these packages: base-3.0.1.0, QuickCheck-1.1.0.0, mtl-1.1.0.0, containers-0.1.0.1 dist/build/tmp/Data/Homeomorphic/Hash1.hs:4:0: Include/Hash.hs: No such file or directory This one may well be my fault, if some extra magic is required for the haddock with CPP, but not the building - but that seems weird, if there is enough info to build the file, surely there is enough info to haddock it Bug 3: Cabal upload doesn't work: $ cabal upload Username: ... Password: .... Not even a "goodbye and thanks for your password, I'm off to raid your paypal". It should certainly say something $ cabal upload dist E:\Neil\homeomorphic>cabal upload dist\homeomorphic-0.1.tar.gz Hackage username: NeilMitchell Hackage password: yoda Uploading dist\homeomorphic-0.1.tar.gz... ERROR: dist\homeomorphic-0.1.tar.gz: 400 Error in upload 400 error in upload - not the worlds most helpful error message... Bug 4: Cabal upload asks for your password in plain text. That one is security related - you are asking for someones password, and giving the appearance that you aren't overly fussed about keeping it secret. Thanks Neil