error: Can't find src/ClassMain.hs

[andrewufrank]

Describe the bug
I have a (perhaps unusual) configuration with two test suits in the cabal file. The project compiles and runs ok.
Running the two tests (each in a separate test suite) runs with cabal test test1 and cabal test test2 ok.

When I run cabal repl test1 I get the following:

Build profile: -w ghc-9.4.5 -O1
In order, the following will be built (use -v for more details):
 - relocation-0.0.1 (test:test1) (ephemeral targets)
Preprocessing test suite 'test1' for relocation-0.0.1..
GHCi, version 9.4.5: https://www.haskell.org/ghc/  :? for help

<no location info>: error: Can't find src/ClassMain.hs
Failed, no modules loaded.
Loaded GHCi configuration from /home/frank/Workspace11/experiments_SSG_related/relocation/.ghci
[1 of 3] Compiling Main             ( tests/Testing.hs, interpreted )
[2 of 3] Compiling Paths_relocation ( /home/frank/Workspace11/experiments_SSG_related/relocation/dist-newstyle/build/x86_64-linux/ghc-9.4.5/relocation-0.0.1/t/test1/build/test1/autogen/Paths_relocation.hs, interpreted )
Ok, two modules loaded.
ghci> 

and processing goes as usual.

The error message error: Can't find src/ClassMain.hs troubles me (because I have with a similar configuration a more serious problem with error: relocation overflow: which might be related).

The cabal file is

cabal-version: 1.12

-- This file has been generated from package.yaml by hpack version 0.35.3.
--
-- see: https://github.com/sol/hpack

name:           relocation
version:        0.0.1
synopsis:       a new test
description:    test for relocation overflows
license:        BSD2
license-file:   LICENSE
build-type:     Simple

library
  exposed-modules:
      Lib.Top
  other-modules:
      Paths_relocation
  hs-source-dirs:
      src
  ghc-options: -Wall
  build-depends:
      base >=4.7 && <5
  default-language: Haskell2010

executable relocation
  main-is: newtest.hs
  other-modules:
      Paths_relocation
  hs-source-dirs:
      app
  ghc-options: -Wall
  build-depends:
      base >=4.7 && <5
  default-language: Haskell2010

test-suite test1
  type: exitcode-stdio-1.0
  main-is: Testing.hs
  other-modules:
      Paths_relocation
  hs-source-dirs:
      tests
  ghc-options: -Wall
  build-depends:
      base >=4.7 && <5
    , relocation
  default-language: Haskell2010

test-suite test2
  type: exitcode-stdio-1.0
  main-is: Testing2.hs
  other-modules:
      Paths_relocation
  hs-source-dirs:
      tests2
  ghc-options: -Wall
  build-depends:
      base >=4.7 && <5
    , relocation
  default-language: Haskell2010

To Reproduce

$ cabal repl test1

Expected behavior
I expect no error message

cabal run produces expected result.

System information

• Operating system
• Linux bhutan 6.1.0-11-amd64 Add support for the Apache license #1 SMP PREEMPT_DYNAMIC Debian 6.1.38-4 (2023-08-08) x86_64 GNU/Linux
• cabal, ghc versions
  The Glorious Glasgow Haskell Compilation System, version 9.4.5
  frank@bhutan:~/Desktop$ cabal --version
  cabal-install version 3.8.1.0
  compiled using version 3.8.1.0 of the Cabal library

Additional context
Add any other context about the problem here.

[fendor]

Hi!

Where does ClassMain come from? Is that really a module in src/ClassMain.hs? Do you import that somewhere?

[fgaz]

Could you share your ~/.ghc/ghci.conf and /home/frank/Workspace11/experiments_SSG_related/relocation/.ghci?

[andrewufrank]

Thank yo for the hint to look into the .ghci file. I am sorry, I tried to build a minimal example and forgot that I had still an old .ghci file in the directory, which produced the src/ClassMain.hs message. (The relocation error problem vanished as well after some unrelated changes, fortunately). Thank you for your efforts!