Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: yesod-auth-oauth (user goal)
rejecting: yesod-auth-oauth-1.4.1.1, yesod-auth-oauth-1.4.1,
yesod-auth-oauth-1.4.0.2, yesod-auth-oauth-1.4.0.1, yesod-auth-oauth-1.4.0,
yesod-auth-oauth-1.3.0, yesod-auth-oauth-1.2.0, yesod-auth-oauth-1.1.0.2,
yesod-auth-oauth-1.1.0.0, yesod-auth-oauth-1.0.0.1, yesod-auth-oauth-1.0.0,
yesod-auth-oauth-0.8.1, yesod-auth-oauth-0.8.0 (constraint from user target
requires ==0.4.1)
trying: yesod-auth-oauth-0.4.1
trying: base-4.9.0.0/installed-4.9... (dependency of yesod-auth-oauth-0.4.1)
next goal: transformers (dependency of yesod-auth-oauth-0.4.1)
rejecting: transformers-0.5.2.0/installed-0.5..., transformers-0.5.2.0,
transformers-0.5.1.0, transformers-0.5.0.1, transformers-0.5.0.0,
transformers-0.4.3.0, transformers-0.4.2.0, transformers-0.4.1.0,
transformers-0.3.0.0 (conflict: yesod-auth-oauth => transformers>=0.2 && <0.3)
rejecting: transformers-0.2.2.1 (conflict: base==4.9.0.0/installed-4.9...,
transformers => base>=2 && <4.8 || >=1.0 && <2)
rejecting: transformers-0.2.1.0, transformers-0.2.0.0 (conflict:
base==4.9.0.0/installed-4.9..., transformers => base>=2 && <4.3 || >=1.0 &&
<2)
rejecting: transformers-0.1.4.0, transformers-0.1.3.0, transformers-0.1.1.0,
transformers-0.1.0.1, transformers-0.0.1.0, transformers-0.0.0.0,
transformers-0.5.0.2, transformers-0.4.0.0 (conflict: yesod-auth-oauth =>
transformers>=0.2 && <0.3)
rejecting: transformers-0.2.2.0 (conflict: base==4.9.0.0/installed-4.9...,
transformers => base>=2 && <4.6 || >=1.0 && <2)
rejecting: transformers-0.1.0.0 (conflict: yesod-auth-oauth =>
transformers>=0.2 && <0.3)
Dependency tree exhaustively searched.