Thanks, I should have been more precise. It is possible to install an older version of Haskell Platform (containing ghc 7.6.3) in the usual Fedora 21 way: yum -y install haskell-platform. I am trying to install the most recent version of the Haskell Platform, version 2014.2.0.0, and for this only a Debian binary is provided. This doesn't work under Fedora 21. I tried using the source distribution for HP 2014.2.0.0, and this requires an already installed HP, so I installed the one that includes ghc 7.6.3. The build of the source distribution failed on the step that tries to create hptool due to "cannot satisfy" applied to hastache-0.6.1... On Tue, Dec 30, 2014 at 6:02 PM, Alexey Shmalko wrote:

...

Adding /usr/lib64 or /usr/lib64/openssl/engines to LD_LIBRARY_PATH doesn't help, even though libgmp.so is located in the latter directory.

Are you sure you have libgmp.so and not libgmp.so.3?

If you have libgmp.so.3, you should symlink libgmp.so to libgmp.so.3 or install package with libgmp.so.

You could also try using strace. System call trace should help figuring out what's going on.

Regards, Alexey

On Tue, 30 Dec 2014 19:54:29 -0500, Dominick Samperi wrote:

I tried using the source distribution for HP 2014.2.0.0, and this requires an already installed HP, so I installed the one that includes ghc 7.6.3.

I've done exactly this successfully, although I think I had to build hptool "by hand" for some reason, something like this: cd hptool; cabal install --only-dep; cabal build Then invoke hptool with the CentOS binary build of ghc-7.8.3. If you're still stuck, feel free to contact me directly, and I'll see if I can help. Toby.