Can not load HIE exe component with stack

haskell / haskell-ide-engine

The engine for haskell ide-integration. Not an IDE

BSD 3-Clause "New" or "Revised" License

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Can not load HIE exe component with stack #1608

Open fendor opened 4 years ago

fendor commented 4 years ago

Open Haskell IDE Engine app/MainHie.hs with the implicit stack cradle and an error should be produced, such as cannot satisfy -packge haskell-ide-engine-<some numbers>.

cc @Gurkenglas

jneira commented 4 years ago

The steps to reproduce seems to be (from #1682): In a simple stack based project without explicit hie.yaml with a lib, an exe and a test component:

Delete .stack-work and $(stack path --snapshot-install-root)
Open in vscode Main.hs (main executable module of the exe component) ---> error
stack build
Reopen vscode in the Main.hs file --> works

Another workaround is use an explicit hie.yaml for stack following the README instructions.

jneira commented 4 years ago

It seems that with the previous workaround the error could arise again so a more stable one would be use a explicit hie.yaml specific for stack, folowwing: https://github.com/haskell/haskell-ide-engine#project-configuration