cabal-helper tries to configure a component named package:setup that does not exist.

[flip111]

Hello,

we ran into an issue in another project over here haskell/haskell-ide-engine#1638 (comment)

is this something that can be fixed in cabal-helper ?

[fendor]

To add more context:
When the build-type is Custom, then cabal-helper produces a build-command such as:

cabal v2-build --with-ghc=C:\Users\flip111\AppData\Local\Programs\stack\x86_64-windows\ghc-8.6.5\bin\ghc.exe --with-ghc-pkg=C:\Users\flip111\AppData\Local\Programs\stack\x86_64-windows\ghc-8.6.5\bin\ghc-pkg.exe --with-haddock=C:\Users\flip111\AppData\Local\Programs\stack\x86_64-windows\ghc-8.6.5\bin\haddock.exe --project-file=C:\Users\flip111\haskell\cabal\cabal.project --builddir=C:\Users\flip111\haskell\cabal\dist-newstyle --only-configure cabal-install:exe:cabal cabal-install:setup

Note the last target cabal-install:setup which does not seem to exist.
Call has been produced on cabal-install. You can also reproduce the issue on a basic cabal project and adding the following lines to your *.cabal file:

build-type: Custom
custom-setup
  setup-depends: base, Cabal

EDIT: Verbose output of cabal-helper (executed with hie) on a similar project (not cabal)

cd /home/baldr/Documents/haskell/fprog; cabal v2-build --with-ghc=/home/baldr/.nix-profile/bin/ghc --with-ghc-pkg=/home/baldr/.nix-profile/bin/ghc-pkg --with-haddock=/home/baldr/.nix-profile/bin/haddock --project-file=/home/baldr/Documents/haskell/fprog/cabal.project --builddir=/home/baldr/Documents/haskell/fprog/dist-newstyle --dry-run all
Build profile: -w ghc-8.6.5 -O1
In order, the following would be built (use -v for more details):
 - fprog-0.1.0.0 (lib:fprog, exe:fprog, exe:intcode) --enable-profiling (configuration changed)
cd /home/baldr/Documents/haskell/fprog; cabal v2-build --with-ghc=/home/baldr/.nix-profile/bin/ghc --with-ghc-pkg=/home/baldr/.nix-profile/bin/ghc-pkg --with-haddock=/home/baldr/.nix-profile/bin/haddock --project-file=/home/baldr/Documents/haskell/fprog/cabal.project --builddir=/home/baldr/Documents/haskell/fprog/dist-newstyle --only-configure fprog:lib:fprog fprog:exe:fprog fprog:exe:intcode fprog:test:fprog-test fprog:setup
cabal: Unknown target 'fprog:setup'.
The package fprog has no component 'setup'.

[fendor]

The package config looks like this:

Package {pPackageName = "fprog", pSourceDir = "D:\\Privat\\Documents\\programming\\haskell\\fprog\\.", pCabalFile = CabalFile "D:\\Privat\\Documents\\programming\\haskell\\fprog\\.\\fprog.cabal", pFlags = [], pUnits = Unit {uUnitId = UnitId "fprog-0.1.0.0-inplace", uPackage = Package {pPackageName = "fprog", pSourceDir = "D:\\Privat\\Documents\\programming\\haskell\\fprog\\.", pCabalFile = CabalFile "D:\\Privat\\Documents\\programming\\haskell\\fprog\\.\\fprog.cabal", pFlags = [], pUnits = ()}, uDistDir = DistDirLib "D:\\Privat\\Documents\\programming\\haskell\\fprog\\dist-newstyle\\build\\x86_64-windows\\ghc-8.6.5\\fprog-0.1.0.0", uImpl = UnitImplV2 {uiV2ComponentNames = [ChExeName "fprog",ChSetupHsName], uiV2Components = ["fprog:exe:fprog","fprog:setup"], uiV2OnlyDependencies = False}}

Note

UnitImplV2 {uiV2ComponentNames = [ChExeName "fprog",ChSetupHsName], uiV2Components = ["fprog:exe:fprog","fprog:setup"], uiV2OnlyDependencies = False}

which contains fprog:setup