Resolving dependencies... cabal: Could not resolve dependencies: next goal: mysnapsession (user goal) rejecting: mysnapsession-0.4.1, mysnapsession-0.4, mysnapsession-0.3.1, mysnapsession-0.3, mysnapsession-0.2 (constraint from user target requires ==0.1.2) trying: mysnapsession-0.1.2 trying: base-4.9.0.0/installed-4.9... (dependency of mysnapsession-0.1.2) next goal: regex-posix (dependency of mysnapsession-0.1.2) rejecting: regex-posix-0.95.2, regex-posix-0.95.1, regex-posix-0.95.0 (conflict: mysnapsession => regex-posix==0.94.*) rejecting: regex-posix-0.94.4, regex-posix-0.94.2 (conflict: base==4.9.0.0/installed-4.9..., regex-posix => base>=4 && <4.6 || >=3 && <4 || <3) rejecting: regex-posix-0.94.1 (conflict: base==4.9.0.0/installed-4.9..., regex-posix => base>=3 && <4.6 || <3) rejecting: regex-posix-0.94.0 (conflict: base==4.9.0.0/installed-4.9..., regex-posix => base>=3.0 && <4.3 || <3.0) rejecting: regex-posix-0.93.2, regex-posix-0.93.1, regex-posix-0.93, regex-posix-0.92, regex-posix-0.91, regex-posix-0.72.0.3, regex-posix-0.72.0.2, regex-posix-0.72.0.1, regex-posix-0.72, regex-posix-0.71 (conflict: mysnapsession => regex-posix==0.94.*) Dependency tree exhaustively searched.