The build is unreachable.

Build log

> /tmp/stackage-build2453$ stack unpack ghc-typelits-natnormalise-0.6.2@sha256:b458ecd177c5a4fd2fd1220d8daafbe9e4eddde00f4c89bcc55b662ab89bf6ff
Unpacked ghc-typelits-natnormalise-0.6.2 to /tmp/stackage-build2453/ghc-typelits-natnormalise-0.6.2/
> /tmp/stackage-build2453/ghc-typelits-natnormalise-0.6.2$ 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-build2453/ghc-typelits-natnormalise-0.6.2$ ./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-natnormalise-0.6.2 --htmldir=/home/circleci/project/builds/nightly/doc/ghc-typelits-natnormalise-0.6.2 --haddockdir=/home/circleci/project/builds/nightly/doc/ghc-typelits-natnormalise-0.6.2
Configuring ghc-typelits-natnormalise-0.6.2...
> /tmp/stackage-build2453/ghc-typelits-natnormalise-0.6.2$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/ghc-typelits-natnormalise-0.6.2$ ./Setup build
Preprocessing library for ghc-typelits-natnormalise-0.6.2..
Building library for ghc-typelits-natnormalise-0.6.2..
[1 of 3] Compiling GHC.TypeLits.Normalise.SOP ( src/GHC/TypeLits/Normalise/SOP.hs, dist/build/GHC/TypeLits/Normalise/SOP.o )
[2 of 3] Compiling GHC.TypeLits.Normalise.Unify ( src/GHC/TypeLits/Normalise/Unify.hs, dist/build/GHC/TypeLits/Normalise/Unify.o )
[3 of 3] Compiling GHC.TypeLits.Normalise ( src/GHC/TypeLits/Normalise.hs, dist/build/GHC/TypeLits/Normalise.o )
> /tmp/stackage-build2453/ghc-typelits-natnormalise-0.6.2$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/ghc-typelits-natnormalise-0.6.2$ ./Setup copy
Installing library in /home/circleci/project/builds/nightly/lib/x86_64-linux-ghc-8.7.20181120/ghc-typelits-natnormalise-0.6.2-KHdC7QLKFw4BlJEoEsvMv3
> /tmp/stackage-build2453/ghc-typelits-natnormalise-0.6.2$ ghc -clear-package-db -global-package-db -package-db=/home/circleci/project/builds/nightly/pkgdb Setup
> /tmp/stackage-build2453/ghc-typelits-natnormalise-0.6.2$ ./Setup register
Registering library for ghc-typelits-natnormalise-0.6.2..