The build is unreachable.

Build log

> /tmp/stackage-build2451$ stack unpack ghc-typelits-extra-0.3@sha256:ffe8074138b4cfcf4fd86c7d72ee211245179c8f3ccfcd075d74723d01260580
Unpacked ghc-typelits-extra-0.3 to /tmp/stackage-build2451/ghc-typelits-extra-0.3/
> /tmp/stackage-build2451/ghc-typelits-extra-0.3$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
[1 of 1] Compiling Main             ( Setup.hs, Setup.o )
Linking Setup ...
> /tmp/stackage-build2451/ghc-typelits-extra-0.3$ ./Setup configure --package-db=clear --package-db=global --package-db=/home/circleci/project/builds/nightly/pkgdb --libdir=/home/circleci/project/builds/nightly/lib --bindir=/home/circleci/project/builds/nightly/bin --datadir=/home/circleci/project/builds/nightly/share --libexecdir=/home/circleci/project/builds/nightly/libexec --sysconfdir=/home/circleci/project/builds/nightly/etc --docdir=/home/circleci/project/builds/nightly/doc/ghc-typelits-extra-0.3 --htmldir=/home/circleci/project/builds/nightly/doc/ghc-typelits-extra-0.3 --haddockdir=/home/circleci/project/builds/nightly/doc/ghc-typelits-extra-0.3
Configuring ghc-typelits-extra-0.3...
> /tmp/stackage-build2451/ghc-typelits-extra-0.3$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2451/ghc-typelits-extra-0.3$ ./Setup build
Preprocessing library for ghc-typelits-extra-0.3..
Building library for ghc-typelits-extra-0.3..
[1 of 4] Compiling GHC.TypeLits.Extra ( src/GHC/TypeLits/Extra.hs, dist/build/GHC/TypeLits/Extra.o )
[2 of 4] Compiling GHC.TypeLits.Extra.Solver.Operations ( src/GHC/TypeLits/Extra/Solver/Operations.hs, dist/build/GHC/TypeLits/Extra/Solver/Operations.o )
[3 of 4] Compiling GHC.TypeLits.Extra.Solver.Unify ( src/GHC/TypeLits/Extra/Solver/Unify.hs, dist/build/GHC/TypeLits/Extra/Solver/Unify.o )
[4 of 4] Compiling GHC.TypeLits.Extra.Solver ( src/GHC/TypeLits/Extra/Solver.hs, dist/build/GHC/TypeLits/Extra/Solver.o )
> /tmp/stackage-build2451/ghc-typelits-extra-0.3$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2451/ghc-typelits-extra-0.3$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181119/ghc-typelits-extra-0.3-J1FW3oXHWyR6bJWYb5MrF5
> /tmp/stackage-build2451/ghc-typelits-extra-0.3$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2451/ghc-typelits-extra-0.3$ ./Setup register
Registering library for ghc-typelits-extra-0.3..