gistfile1.txt

patrik@ariakenom ~/h/cabal> nix-shell -p zlib pkgconfig --run "cabal v1-build"
Resolving dependencies...
Warning: solver failed to find a solution:
Could not resolve dependencies:
[__0] trying: hello-0.1.0.0 (user goal)
[__1] unknown package: lens (dependency of hello)
[__1] fail (backjumping, conflict set: hello, lens)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: hello, lens
Trying configure anyway.
Configuring hello-0.1.0.0...
cabal: Encountered missing dependencies:
lens -any