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In Haskell packages, nix-build succeeds but nix-shell then evaluating the build phases fails #6401

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pikajude opened this issue Feb 17, 2015 · 2 comments
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In Haskell packages, nix-build succeeds but nix-shell then evaluating the build phases fails #6401

pikajude opened this issue Feb 17, 2015 · 2 comments
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6.topic: haskell

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@pikajude
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Still working on a minimal test case. Right now I can successfully reproduce with https://github.com/joelteon/joelt.io. In shell.nix, shellHook is set to (what I think is) the setup phases for Haskell module building. If I invoke nix-shell, I'm given this (failing) output. If I change shellHook to preBuild in shell.nix and nix-build shell.nix, it successfully starts the REPL.

  1. How does cabal know that exceptions 0.6.1 or 0.7 exist, for example?
  2. Why doesn't the failure happen during nix-build?
@pikajude
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dtruss of the Setup executable during configure: https://gist.githubusercontent.com/anonymous/6c05a921005f9fa2223c/raw/c5405ea1b02c70a8f4d11979acc8381527e35cbf/-

as you can see, it not only has exceptions-0.6.1 in a package configuration, but also passes a nonexistent exceptions-0.6.1 directory to the linker.

@pikajude
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Caused by NixOS/nix#395

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@peti @pikajude