Resolving dependencies...
cabal: Could not resolve dependencies:
trying: bkr-0.1.2 (user goal)
trying: http-conduit-2.1.8 (dependency of bkr-0.1.2)
trying: http-client-tls-0.2.2 (dependency of http-conduit-2.1.8)
trying: tls-1.3.3 (dependency of http-client-tls-0.2.2)
trying: x509-validation-1.6.3 (dependency of tls-1.3.3)
trying: pem-0.2.2 (dependency of x509-validation-1.6.3)
trying: base64-bytestring-1.0.0.1 (dependency of pem-0.2.2)
trying: cereal-0.5.1.0 (dependency of tls-1.3.3)
trying: http-client-0.4.24 (dependency of http-conduit-2.1.8)
trying: blaze-builder-0.4.0.1 (dependency of http-client-0.4.24)
next goal: aws (dependency of bkr-0.1.2)
rejecting: aws-0.13.0, 0.12.1, 0.12, 0.11.4, 0.11.3, 0.11.2 (conflict:
cereal==0.5.1.0, aws => cereal>=0.3 && <0.5)
rejecting: aws-0.11.1, 0.11, 0.10.5, 0.10.4, 0.10.3, 0.10.2, 0.10.1, 0.10,
0.9.5, 0.9.4, 0.9.3, 0.9.2, 0.9.1, 0.9, 0.8.6, 0.8.5, 0.8.4, 0.8.3, 0.8.2,
0.8.1, 0.8.0, 0.7.6.4, 0.7.6.3, 0.7.6.2, 0.7.6.1, 0.7.6, 0.7.5, 0.7.4, 0.7.3,
0.7.2, 0.7.1, 0.7.0 (conflict: blaze-builder==0.4.0.1, aws =>
blaze-builder>=0.2.1.4 && <0.4)
rejecting: aws-0.6.2, 0.6.1, 0.6.0, 0.5.0, 0.4.1, 0.4.0.1 (conflict:
base64-bytestring==1.0.0.1, aws => base64-bytestring==0.1.*)
rejecting: aws-0.4.0, 0.3.2, 0.3.1, 0.3, 0.2, 0.1, 0.0.6, 0.0.5, 0.0.4, 0.0.3,
0.0.2, 0.0.1 (conflict: bkr => aws>=0.4.0.1)
Backjump limit reached (change with --max-backjumps).