Start fails on Nixos

[sir4ur0n]

Hi,

I just recently started using Nixos and tested my workflow with Intellij and Haskell on it.
When importing for the first time a Haskell project in Intellij, it installs many tools using this command:

~/.nix-profile/bin/stack -j1 --stack-root ~/.cache/intellij-haskell/lts-13 --resolver lts-13 --local-bin-path ~/.cache/intellij-haskell/lts-13/bin install hoogle

However this fails as it requires Zlib which requires special Stack integration.
The command is successful if I manually type it in a terminal and add --nix-packages "zlib" option to it:

~/.nix-profile/bin/stack --nix-packages "zlib" -j1 --stack-root ~/.cache/intellij-haskell/lts-13 --resolver lts-13 --local-bin-path ~/.cache/intellij-haskell/lts-13/bin install hoogle

Have I missed something (this is completely possible as I'm a huge noob in Nix/Nixos)? Or is something missing for Nixos use?

Note, in my project stack.yaml it was correctly configured:

resolver: lts-13.26
packages:
  - .
nix:
  enable: true
  packages: 
    - zlib

Cheers!

[friedbrice]

I think your configuration is correct; I think the problem might be an oversight in the tools-creation logic. As a stopgap, you could use a feature coming in the next release that will allow you to build your tools separately and specify their paths directly in the plugin options.

[friedbrice]

Here's the PR if you'd like to follow it: #454 (comment)

[rikvdkleij]

Stack's nix integration is not without flaws.

You can try to add zlib to to shell.nix or default.nix to be sure of zlib in the nix-shell.

I have not so good experience with stack it's nix integration, especially not on macOS.
See
commercialhaskell/stack#4406
commercialhaskell/stack#4329

Btw, you can better use nix and cabal new style. But yes, the plugin does not support that yet. It's on my wish list and did already some preparations.

[rikvdkleij]

Please reopen if still an issue.

[sir4ur0n]

I guess this can be closed as we now can explicitly pass tool paths rather than relying on the plugin installing them, thank you 😄

[rikvdkleij]

Thanks for the confirmation.

Eventually the plugin should support Cabal/Nix projects but that's a separate issue 😄