$ /nix/store/rry6qingvsrqmc7ll7jgaqpybcbdgf5v-coreutils-9.7/bin/timeout --kill-after=15s 1800s /nix/store/mycbwkcm1jzjgsaiydvzib9phmzfz9vx-nix-2.31.1/bin/nix --extra-experimental-features nix-command --extra-experimental-features flakes --extra-substituters https://sellout.cachix.org --extra-trusted-public-keys sellout.cachix.org-1:v37cTpWBEycnYxSPAgSQ57Wiqd3wjljni2aC0Xry1DE= --netrc-file /tmp/nix-ci-worker-fb5e03fd87c7d4c2/cachix-74fa1d96c30532bc/netrc --extra-substituters ssh-ng://worker.nix-ci.com?ssh-key=/tmp/nix-ci-worker-fb5e03fd87c7d4c2/ssh-key-e84cdc713899fbd8/ssh.key&remote-store=/cache/nix-ci/&base64-ssh-public-host-key=c3NoLWVkMjU1MTkgQUFBQUMzTnphQzFsWkRJMU5URTVBQUFBSU9EQXdicHlRaVYwb2lyakhxbHIwbitnWDNNVjQwbDBKTmlKdVNDZHdoZ1o= --extra-trusted-public-keys nix-ci-staging:Q5+aawDG0LPCgu1fP9e+9hktvsfSyvu/Xe5PvzTLRVs= --print-build-logs build --no-link git+https://x-access-token:<REDACTED:GITHUB_ACCESS_TOKEN>@github.com/sellout/hpack-dhall-defaults?ref=typed-hpack&rev=6ff751d824945c1d6d7e1ec3b4694c3f1715918d#packages.x86_64-linux.default --post-build-hook /tmp/nix-ci-worker-fb5e03fd87c7d4c2/nix-ci-cache-upload.sh
warning: ignoring untrusted flake configuration setting 'allow-import-from-derivation'.
Pass '--accept-flake-config' to trust it
warning: ignoring untrusted flake configuration setting 'extra-experimental-features'.
Pass '--accept-flake-config' to trust it
warning: ignoring untrusted flake configuration setting 'extra-substituters'.
Pass '--accept-flake-config' to trust it
warning: ignoring untrusted flake configuration setting 'extra-trusted-public-keys'.
Pass '--accept-flake-config' to trust it
warning: ignoring untrusted flake configuration setting 'sandbox'.
Pass '--accept-flake-config' to trust it
warning: ignoring untrusted flake configuration setting 'use-registries'.
Pass '--accept-flake-config' to trust it
this derivation will be built:
  /nix/store/86xqg1qacvsa85jn67d9pqmniawv1fxh-hpack-dhall-defaults.drv
building '/nix/store/86xqg1qacvsa85jn67d9pqmniawv1fxh-hpack-dhall-defaults.drv'...
hpack-dhall-defaults> dhall:
hpack-dhall-defaults>  /nix/store/97hxjj4avw0y2v2gvnf2pn12a1x7id0m-source/dhall/package.dhall
hpack-dhall-defaults>    /nix/store/97hxjj4avw0y2v2gvnf2pn12a1x7id0m-source/dhall/Test/package.dhall
hpack-dhall-defaults>      /nix/store/97hxjj4avw0y2v2gvnf2pn12a1x7id0m-source/dhall/Test/doctests
hpack-dhall-defaults> 
hpack-dhall-defaults> Error: Wrong type of function argument
hpack-dhall-defaults> 
hpack-dhall-defaults> - <  :  > (a union type)
hpack-dhall-defaults> + Text
hpack-dhall-defaults> 
hpack-dhall-defaults> 34             hpack.Conditional.maybe
hpack-dhall-defaults> 35               (hpack.Test.Type (rec hpack.Test.Type))
hpack-dhall-defaults> 36               minimumGhcVersion
hpack-dhall-defaults> 37               ">="
hpack-dhall-defaults> 
hpack-dhall-defaults> /nix/store/97hxjj4avw0y2v2gvnf2pn12a1x7id0m-source/dhall/Test/doctests:34:13
hpack-dhall-defaults> 
hpack-dhall-defaults> 3              ./doctests
hpack-dhall-defaults> 
hpack-dhall-defaults> /nix/store/97hxjj4avw0y2v2gvnf2pn12a1x7id0m-source/dhall/Test/package.dhall:3:14
error: Cannot build '/nix/store/86xqg1qacvsa85jn67d9pqmniawv1fxh-hpack-dhall-defaults.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/3hnafwj4xp4vbjkkgsnik2v7ww04gb5k-hpack-dhall-defaults