Re: [Haskell-cafe] ghc 7.10.1-rc1 ghc no longer supports single-file style package databases (dist/package.conf.inplace) use 'ghc-pkg init' to create the database with the correct format.

Yes, it seems installing latest cabal under ghc 7.8 first and upgrading to 7.10 afterwards is the way to go. Thanks! On Sat, Dec 27, 2014 at 2:09 AM, Doug Burke wrote:

I ended up installing both Cabal and cabal-install (from GitHub) using ghc 7.8.4. After that things seemed to get better with ghc 7.10 RC1 (which was using my newly created cabal-install command-line tool with the Cabal libs from ghc 7.10). Or at least, I think that's how I got it working.

HTH, Doug

On Fri, Dec 26, 2014 at 7:05 PM, Konstantine Rybnikov wrote:

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Installing dependencies fails with very same error, unfortunately.

On Fri, Dec 26, 2014 at 5:02 PM, Antoine Latter wrote:

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I did the following to work around this:

I cloned this branch on GitHub: https://github.com/haskell/cabal/tree/1.22

Then, in the cabal-install folder I built the 'cabal-install' binary *without* using the existing version of cabal-install, then used the newly built 'cabal-install' to actually install the new 'cabal-install':

cd <folder which has cabal-install> ghc Setup.hs ./Setup.hs configure ./Seup.hs build dist/build/cabal/cabal install

You may need to install some dependencies first - using the old cabal-install worked fine for me for this, but maybe it secretly corrupted something behind the scenes. I haven't had trouble so far.

On Fri, Dec 26, 2014 at 2:29 AM, Konstantine Rybnikov wrote:

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Hi!

I just did `sudo make install` on ghc 7.10.1-rc1, removed ~/.ghc and did `cabal update`. I'm now trying to upgrade to latest cabal by issuing `cabal install cabal-install`. I get the following:

``` ... on the commandline: Warning: -package-name is deprecated: Use -this-package-key instead ghc: ghc no longer supports single-file style package databases (dist/package.conf.inplace) use 'ghc-pkg init' to create the database with the correct format. Failed to install zlib-0.5.4.2 cabal: Error: some packages failed to install: HTTP-3001.0.4 depends on text-1.2.0.3 which failed to install. cabal-install-0.4.0 depends on zlib-0.5.4.2 which failed to install. mtl-2.2.1 failed during the building phase. The exception was: ExitFailure 1 network-2.6.0.2 failed during the building phase. The exception was: ExitFailure 1 parsec-3.1.7 depends on text-1.2.0.3 which failed to install. text-1.2.0.3 failed during the building phase. The exception was: ExitFailure 1 zlib-0.5.4.2 failed during the building phase. The exception was: ExitFailure 1 ```

Does anyone know a quick-fix?

Thanks!

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