Resolving dependencies... Error: cabal: Could not resolve dependencies: [__0] trying: ghcide-2.12.0.0 (user goal) [__1] next goal: hls-plugin-api (dependency of ghcide) [__1] rejecting: hls-plugin-api-2.11.0.0 (conflict: ghcide => hls-plugin-api==2.12.0.0) [__1] skipping: hls-plugin-api-2.10.0.0, hls-plugin-api-2.9.0.1, hls-plugin-api-2.9.0.0, hls-plugin-api-2.8.0.0, hls-plugin-api-2.7.0.0, hls-plugin-api-2.6.0.0, hls-plugin-api-2.5.0.0, hls-plugin-api-2.4.0.0, hls-plugin-api-2.3.0.0, hls-plugin-api-2.2.0.0, hls-plugin-api-2.1.0.0, hls-plugin-api-2.0.0.1, hls-plugin-api-2.0.0.0, hls-plugin-api-1.6.0.0, hls-plugin-api-1.5.0.0, hls-plugin-api-1.4.0.0, hls-plugin-api-1.3.0.0, hls-plugin-api-1.2.0.2, hls-plugin-api-1.2.0.1, hls-plugin-api-1.2.0.0, hls-plugin-api-1.1.0.2, hls-plugin-api-1.1.0.1, hls-plugin-api-1.1.0.0, hls-plugin-api-1.0.0.0, hls-plugin-api-0.7.1.0, hls-plugin-api-0.7.0.0, hls-plugin-api-0.6.0.0, hls-plugin-api-0.5.0.1, hls-plugin-api-0.5.0.0, hls-plugin-api-0.4.1.0, hls-plugin-api-0.4.0.0 (has the same characteristics that caused the previous version to fail: excluded by constraint '==2.12.0.0' from 'ghcide') [__1] fail (backjumping, conflict set: ghcide, hls-plugin-api) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: ghcide, hls-plugin-api