Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] next goal: hercules-ci-cnix-store (user goal)
[__0] rejecting: hercules-ci-cnix-store-0.3.7.0 (conflict: pkg-config package
nix-main((>=2.4 && <2.19 || >=2.19.3 && <2.21) || >=2.24.10 && <2.25) ||
>=2.28 && <2.29, not found in the pkg-config database)
[__0] rejecting: hercules-ci-cnix-store-0.3.6.1,
hercules-ci-cnix-store-0.3.6.0, hercules-ci-cnix-store-0.3.5.1,
hercules-ci-cnix-store-0.3.5.0, hercules-ci-cnix-store-0.3.4.0,
hercules-ci-cnix-store-0.3.3.5, hercules-ci-cnix-store-0.3.3.4,
hercules-ci-cnix-store-0.3.3.3, hercules-ci-cnix-store-0.3.3.2,
hercules-ci-cnix-store-0.3.3.1, hercules-ci-cnix-store-0.3.3.0,
hercules-ci-cnix-store-0.3.2.0, hercules-ci-cnix-store-0.3.1.0,
hercules-ci-cnix-store-0.3.0.1, hercules-ci-cnix-store-0.3.0.0,
hercules-ci-cnix-store-0.2.1.2, hercules-ci-cnix-store-0.2.1.1,
hercules-ci-cnix-store-0.2.1.0, hercules-ci-cnix-store-0.2.0.1,
hercules-ci-cnix-store-0.2.0.0, hercules-ci-cnix-store-0.1.1.0,
hercules-ci-cnix-store-0.1.0.0 (constraint from user target requires
==0.3.7.0)
[__0] fail (backjumping, conflict set: hercules-ci-cnix-store)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: hercules-ci-cnix-store