I've used `guix import hackage pcg-random` to create the attached pcg-random.scm. When trying to build it using `guix build -f pcg-random.scm`, I get the following error:

starting phase `configure'
running "runhaskell Setup.hs" with command "configure" and parameters ("--prefix=/gnu/store/s5fjjd04x0n5f5dr9rgaf963nfqwf3dz-ghc-pcg-random-0.1.3.7" "--libdir=/gnu/store/s5fjjd04x0n5f5dr9rgaf963nfqwf3dz-ghc-pcg-random-0.1.3.7/lib" "--docdir=/gnu/store/s5fjjd04x0n5f5dr9rgaf963nfqwf3dz-ghc-pcg-random-0.1.3.7/share/doc/ghc-pcg-random-0.1.3.7" "--libsubdir=$compiler/$pkg-$version" "--package-db=/tmp/guix-build-ghc-pcg-random-0.1.3.7.drv-0/package.conf.d" "--global" "--enable-tests" "--enable-shared" "--enable-executable-dynamic" "--ghc-option=-fPIC" "--ghc-option=-optl=-Wl,-rpath=/gnu/store/s5fjjd04x0n5f5dr9rgaf963nfqwf3dz-ghc-pcg-random-0.1.3.7/lib/$compiler/$pkg-$version")

Setup.hs:3:1: error:
    Could not find module ‘Distribution.Extra.Doctest’
    Perhaps you meant Distribution.Simple.Doctest (from Cabal-2.4.0.1)
    Use -v to see a list of the files searched for.
  |
3 | import Distribution.Extra.Doctest (defaultMainWithDoctests)
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
command "runhaskell" "Setup.hs" "configure" "--prefix=/gnu/store/s5fjjd04x0n5f5dr9rgaf963nfqwf3dz-ghc-pcg-random-0.1.3.7" "--libdir=/gnu/store/s5fjjd04x0n5f5dr9rgaf963nfqwf3dz-ghc-pcg-random-0.1.3.7/lib" "--docdir=/gnu/store/s5fjjd04x0n5f5dr9rgaf963nfqwf3dz-ghc-pcg-random-0.1.3.7/share/doc/ghc-pcg-random-0.1.3.7" "--libsubdir=$compiler/$pkg-$version" "--package-db=/tmp/guix-build-ghc-pcg-random-0.1.3.7.drv-0/package.conf.d" "--global" "--enable-tests" "--enable-shared" "--enable-executable-dynamic" "--ghc-option=-fPIC" "--ghc-option=-optl=-Wl,-rpath=/gnu/store/s5fjjd04x0n5f5dr9rgaf963nfqwf3dz-ghc-pcg-random-0.1.3.7/lib/$compiler/$pkg-$version" failed with status 1
builder for `/gnu/store/7jkcigan6ygy42c3ivy9spfqh5pfx4qx-ghc-pcg-random-0.1.3.7.drv' failed with exit code 1
build of /gnu/store/7jkcigan6ygy42c3ivy9spfqh5pfx4qx-ghc-pcg-random-0.1.3.7.drv failed
View build log at '/var/log/guix/drvs/7j/kcigan6ygy42c3ivy9spfqh5pfx4qx-ghc-pcg-random-0.1.3.7.drv.bz2'.
guix build: error: build of `/gnu/store/7jkcigan6ygy42c3ivy9spfqh5pfx4qx-ghc-pcg-random-0.1.3.7.drv' failed