On WinXP. I've uploaded Takusen-0.8.4 to hackage, and thought I'd see how well cabal-install downloads and installs it. cabal install Takusen --flags="sqlite odbc oracle postgres" --reinstall -v3 results in (with some trimming): ... In order, the following would be installed: Takusen-0.8.4 (reinstall) Takusen-0.8.4 has already been downloaded. Extracting C:\Documents and Settings\bayleya\Application Data\cabal\packages\hackage.haskell.org\Takusen\0.8.4\Takusen-0.8.4.tar.gz to C:\DOCUME~1\bayleya\LOCALS~1\Temp\Takusen-0.8.411372... cabal: Error: some packages failed to install: Takusen-0.8.4 failed while unpacking the package. The exception was: user error (TAR checksum error) The uploaded package was created with "darcs dist -d Takusen-0.8.4". Can I check before uploading that the tar file is valid? darcs --version gives: 2.0.2 (+ 76 patches) Alistair