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17 lines
962 B
Markdown
17 lines
962 B
Markdown
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## Nix is complaining about IFD (import from derivation)
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If a derivation's `pname` and `version` attributes are not explicitly set,
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crane will inspect the project's `Cargo.toml` file to set them as a convenience
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to avoid duplicating that information by hand. This works well when the source
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is a local path, but can cause issues if the source is being fetched remotely,
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or flakes are not being used (since flakes have IFD enabled on by default).
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One easy workaround for this issue (besides enabling the
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`allow-import-from-derivation` option in Nix) is to explicitly set
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`{ pname = "..."; version = "..."; }` in the derivation.
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You'll know you've run into this issue if you see error messages along the lines
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of:
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* `cannot build '/nix/store/...-source.drv' during evaluation because the option 'allow-import-from-derivation' is disabled`
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* `a 'aarch64-darwin' with features {} is required to build '/nix/store/...', but I am a 'x86_64-linux' with features {}`
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