Resolving dependencies...
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Starting     attoparsec-0.13.2.5
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Starting     pretty-show-1.10
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Starting     nix-derivation-1.1.2
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Downloading  nix-diff-1.0.15
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Starting     nix-diff-1.0.15
Building     nix-diff-1.0.15
Completed    nix-diff-1.0.15