Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: signable-0.1 (user goal)
[__1] next goal: secp256k1-haskell (dependency of signable)
[__1] rejecting: secp256k1-haskell-0.4.0 (conflict: pkg-config package
libsecp256k1-any, not found in the pkg-config database)
[__1] rejecting: secp256k1-haskell-0.3.1 (conflict: signable =>
secp256k1-haskell>=0.4 && <0.5)
[__1] skipping: secp256k1-haskell-0.3.0, secp256k1-haskell-0.2.5,
secp256k1-haskell-0.2.4, secp256k1-haskell-0.2.3, secp256k1-haskell-0.2.2,
secp256k1-haskell-0.2.1, secp256k1-haskell-0.2.0, secp256k1-haskell-0.1.8,
secp256k1-haskell-0.1.7, secp256k1-haskell-0.1.6, secp256k1-haskell-0.1.5,
secp256k1-haskell-0.1.4, secp256k1-haskell-0.1.3, secp256k1-haskell-0.1.2,
secp256k1-haskell-0.1.1, secp256k1-haskell-0.1.0 (has the same characteristics
that caused the previous version to fail: excluded by constraint '>=0.4 &&
<0.5' from 'signable')
[__1] fail (backjumping, conflict set: secp256k1-haskell, signable)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: signable, secp256k1-haskell