Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: hercules-ci-cnix-store-0.2.0.0 (user goal)
[__1] rejecting: hercules-ci-cnix-store:-nix-2_4 (conflict: pkg-config package
nix-main(==2.0 || >2.0) && <2.4, not found in the pkg-config database)
[__1] rejecting: hercules-ci-cnix-store:+nix-2_4 (conflict: pkg-config package
nix-main==2.4 || >2.4, not found in the pkg-config database)
[__1] fail (backjumping, conflict set: hercules-ci-cnix-store,
hercules-ci-cnix-store:nix-2_4)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: hercules-ci-cnix-store,
hercules-ci-cnix-store:nix-2_4