Resolving dependencies...
Starting     hashable-1.3.0.0
Starting     syb-0.7.1
Building     hashable-1.3.0.0
Building     syb-0.7.1
Completed    hashable-1.3.0.0
Starting     unordered-containers-0.2.13.0
Completed    syb-0.7.1
Building     unordered-containers-0.2.13.0
Completed    unordered-containers-0.2.13.0
Starting     uniplate-1.6.13
Building     uniplate-1.6.13
Completed    uniplate-1.6.13
Starting     ghc-lib-parser-ex-8.10.0.17
Building     ghc-lib-parser-ex-8.10.0.17
Completed    ghc-lib-parser-ex-8.10.0.17
Starting     ghc-datasize-0.2.3
Building     ghc-datasize-0.2.3
Failed to install ghc-datasize-0.2.3
Build log ( /home/builder/.cabal/logs/ghc-8.10.2/ghc-datasize-0.2.3-JnILLQ3uHxbJ4AFnS9dPI1.log ):
cabal: Entering directory '/tmp/cabal-tmp-24362/ghc-datasize-0.2.3'
Configuring ghc-datasize-0.2.3...
Preprocessing library for ghc-datasize-0.2.3..
Building library for ghc-datasize-0.2.3..
[1 of 1] Compiling GHC.DataSize     ( src/GHC/DataSize.hs, dist/build/GHC/DataSize.o, dist/build/GHC/DataSize.dyn_o )

src/GHC/DataSize.hs:23:1: error:
    Could not load module ‘GHC.Exts.Heap’
    It is a member of the hidden package ‘ghc-heap-8.10.2’.
    Perhaps you need to add ‘ghc-heap’ to the build-depends in your .cabal file.
    Use -v (or `:set -v` in ghci) to see a list of the files searched for.
   |
23 | import GHC.Exts.Heap hiding (size)
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

src/GHC/DataSize.hs:24:1: error:
    Could not load module ‘GHC.Exts.Heap.Constants’
    It is a member of the hidden package ‘ghc-heap-8.10.2’.
    Perhaps you need to add ‘ghc-heap’ to the build-depends in your .cabal file.
    Use -v (or `:set -v` in ghci) to see a list of the files searched for.
   |
24 | import GHC.Exts.Heap.Constants (wORD_SIZE)
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
cabal: Leaving directory '/tmp/cabal-tmp-24362/ghc-datasize-0.2.3'
cabal: Error: some packages failed to install:
ghc-datasize-0.2.3-JnILLQ3uHxbJ4AFnS9dPI1 failed during the building phase.
The exception was:
ExitFailure 1