ardour: install a desktop file

I based it on the desktop file from Arch Linux.
haskell-base-prelude: add version 0.1.3
haskell-conduit-extra: update to version 1.1.3
haskell-filestore: update to version 0.6.0.3
haskell-profunctors: update to version 4.2
haskell-stm-containers: update to version 0.1.3
haskell-wai-extra: update to version 3.0.1.1
haskell-yesod-auth: update to version 1.3.3
haskell-hlint: update to version 1.9.3
LambdaHack: disable test suite to fix build

https://github.com/LambdaHack/LambdaHack/issues/57
Revert "use wrapper to set LUA_PATH variable"

This reverts commit 807cd4b4d40813ff1d801b0b17de3c421a465b1b, as it
broke the 'awesome' package. It was also an incomplete change, only
modifying lua-5.1 and none of the other lua versions.

A better approach, if wanting lua to pick up external modules, would be
to loop over $NIX_PROFILES. $NIX_PROFILES is unset in build
environments, so it should be safe.

Conflicts:
	pkgs/development/interpreters/lua-5/5.1.nix