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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
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Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: dhall-nix-1.1.10 (user goal)
[__1] trying: hnix-0.6.1 (dependency of dhall-nix)
[__2] next goal: prettyprinter (dependency of hnix)
[__2] rejecting: prettyprinter-1.5.1, prettyprinter-1.5.0,
prettyprinter-1.4.0, prettyprinter-1.3.0 (conflict: hnix =>
prettyprinter>=1.2.1 && <1.3)
[__2] trying: prettyprinter-1.2.1.1
[__3] next goal: dhall (dependency of dhall-nix)
[__3] rejecting: dhall-1.28.0 (conflict: prettyprinter==1.2.1.1, dhall =>
prettyprinter>=1.5.1 && <1.6)
[__3] rejecting: dhall-1.27.0, dhall-1.26.1, dhall-1.25.0, dhall-1.24.0,
dhall-1.23.0, dhall-1.22.0, dhall-1.21.0, dhall-1.20.1, dhall-1.19.1,
dhall-1.19.0, dhall-1.18.0, dhall-1.17.0, dhall-1.16.1, dhall-1.15.1,
dhall-1.14.0, dhall-1.13.1, dhall-1.13.0, dhall-1.12.0, dhall-1.11.1,
dhall-1.11.0, dhall-1.10.0, dhall-1.9.1, dhall-1.9.0, dhall-1.8.2,
dhall-1.8.1, dhall-1.8.0, dhall-1.7.0, dhall-1.6.0, dhall-1.5.1, dhall-1.5.0,
dhall-1.4.2, dhall-1.3.0, dhall-1.2.0, dhall-1.1.0, dhall-1.0.2, dhall-1.0.1,
dhall-1.26.0, dhall-1.20.0, dhall-1.16.0, dhall-1.15.0, dhall-1.4.1,
dhall-1.4.0, dhall-1.0.0 (conflict: dhall-nix => dhall>=1.28 && <1.29)
[__3] fail (backjumping, conflict set: dhall, dhall-nix, prettyprinter)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: dhall-nix, hnix, dhall, prettyprinter