Warning: The install command is a part of the legacy v1 style of cabal usage.

Please switch to using either the new project style and the new-install
command or the legacy v1-install alias as new-style projects will become the
default in the next version of cabal-install. Please file a bug if you cannot
replicate a working v1- use case with the new-style commands.

For more information, see: https://wiki.haskell.org/Cabal/NewBuild

Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] next goal: secp256k1-haskell (user goal)
[__0] rejecting: secp256k1-haskell-0.1.8 (conflict: pkg-config package
libsecp256k1-any, not found in the pkg-config database)
[__0] rejecting: 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
(constraint from user target requires ==0.1.8)
[__0] fail (backjumping, conflict set: secp256k1-haskell)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: secp256k1-haskell