Failed to run arch-hs with target cabal-fmt

[berberman]

$ arch-hs cabal-fmt
  ▶ You didn't pass -h, use hackage index file from default path.
  ▶ You didn't pass -c, use community db file from default path.
  ▶ You didn't pass -f, different flag assignments may make difference in dependency resolving.
  ⓘ Loading hackage...
  ⓘ Loading community.db...
  ⓘ Start running...
  ⓘ Solved target:
Cabal                                                                        ✔ [community]
ansi-terminal                                                                ✔ [community]
ansi-wl-pprint                                                               ✔ [community]
binary                                                                       ✔ [community]
bytestring                                                                   ✔ [community]
cabal-fmt                                                                    ✘
 ├─Cabal [golden :: Test,cabal-fmt-internal :: SubLibs]                      ✔ [community]
 ├─bytestring [cabal-fmt :: Exe,golden :: Test,cabal-fmt-internal :: SubLibs]✔ [community]
 ├─cabal-fmt-internal [cabal-fmt :: Exe,golden :: Test]                      ✘
 ├─containers [golden :: Test,cabal-fmt-internal :: SubLibs]                 ✔ [community]
 ├─directory [cabal-fmt :: Exe,cabal-fmt-internal :: SubLibs]                ✔ [community]
 ├─filepath [cabal-fmt :: Exe,golden :: Test,cabal-fmt-internal :: SubLibs]  ✔ [community]
 ├─mtl [cabal-fmt-internal :: SubLibs]                                       ✔ [community]
 ├─optparse-applicative [cabal-fmt :: Exe]                                   ✔ [community]
 ├─parsec [cabal-fmt-internal :: SubLibs]                                    ✔ [community]
 ├─pretty [cabal-fmt-internal :: SubLibs]                                    ✔ [community]
 ├─process [golden :: Test]                                                  ✔ [community]
 ├─tasty [golden :: Test]                                                    ✔ [community]
 └─tasty-golden [golden :: Test]                                             ✔ [community]
colour                                                                       ✔ [community]
containers                                                                   ✔ [community]
deepseq                                                                      ✔ [community]
directory                                                                    ✔ [community]
filepath                                                                     ✔ [community]
mtl                                                                          ✔ [community]
optparse-applicative                                                         ✔ [community]
parsec                                                                       ✔ [community]
pretty                                                                       ✔ [community]
process                                                                      ✔ [community]
template-haskell                                                             ✔ [community]
text                                                                         ✔ [community]
time                                                                         ✔ [community]
transformers-compat                                                          ✔ [community]
unix                                                                         ✔ [community]
Diff                                                                         ✔ [community]
QuickCheck                                                                   ✔ [community]
array                                                                        ✔ [community]
base-compat                                                                  ✔ [community]
base-orphans                                                                 ✔ [community]
integer-logarithms                                                           ✔ [community]
stm                                                                          ✔ [community]
tagged                                                                       ✔ [community]
tar                                                                          ✔ [community]
tasty                                                                        ✔ [community]
tasty-golden                                                                 ✔ [community]
tasty-hunit                                                                  ✔ [community]
tasty-quickcheck                                                             ✔ [community]
temporary                                                                    ✔ [community]
transformers                                                                 ✔ [community]
tree-diff                                                                    ✔ [community]
HUnit                                                                        ✔ [community]
random                                                                       ✔ [community]
test-framework                                                               ✔ [community]
test-framework-quickcheck2                                                   ✔ [community]
integer-gmp                                                                  ✔ [community]
cabal-fmt-internal                                                           ✘
test-framework-hunit                                                         ✔ [community]
ghc-boot-th                                                                  ✔ [community]
quickcheck-unicode                                                           ✔ [community]

  ⓘ Recommended package order (from topological sort):
1. cabal-fmt-internal
2. cabal-fmt

  🛑 Runtime Exception: Unable to find [cabal-fmt-internal] (hackage name) / [haskell-cabal-fmt-internal] (community name)