Resolving dependencies... cabal: Could not resolve dependencies: next goal: happstack-foundation (user goal) rejecting: happstack-foundation-0.5.8, 0.5.6, 0.5.5, 0.5.4, 0.5.3, 0.5.2, 0.5.1, 0.4.0, 0.3.1, 0.3.0, 0.2.3, 0.2.2 (global constraint requires ==0.2.1) trying: happstack-foundation-0.2.1 trying: web-routes-th-0.22.3 (dependency of happstack-foundation-0.2.1) trying: parsec-3.1.9 (dependency of web-routes-th-0.22.3) trying: bytestring-0.10.4.0/installed-9f4... (dependency of parsec-3.1.9) next goal: web-routes-hsp (dependency of happstack-foundation-0.2.1) rejecting: web-routes-hsp-0.24.6, 0.24.5, 0.24.4, 0.24.3, 0.24.2, 0.24.1, 0.24.0 (conflict: happstack-foundation => web-routes-hsp==0.23.*) trying: web-routes-hsp-0.23.0 trying: hsx-0.10.5 (dependency of web-routes-hsp-0.23.0) trying: utf8-string-1 (dependency of hsx-0.10.5) next goal: reform-happstack (dependency of happstack-foundation-0.2.1) rejecting: reform-happstack-0.2.5, 0.2.4, 0.2.3, 0.2.2, 0.2.1, 0.2.0 (conflict: happstack-foundation => reform-happstack==0.1.*) rejecting: reform-happstack-0.1.2 (conflict: utf8-string==1, reform-happstack => utf8-string==0.3.*) rejecting: reform-happstack-0.1.1, 0.1 (conflict: bytestring==0.10.4.0/installed-9f4..., reform-happstack => bytestring==0.9.*) Dependency tree exhaustively searched.