16 lines
347 B
Nix
16 lines
347 B
Nix
{...}: rec {
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# Fault Monad
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# Wrapper around an error (ie builtins.abort)
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Fault = error: {
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_error_ = error;
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};
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# Pattern Matching
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isFault = F: builtins.attrNames F == ["_error_"];
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# Unwrap (Monadic Return Operation)
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unwrapFault = F: F._error_;
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# Map (Monadic Bind Operation)
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mapFault = f: F: Fault (f (unwrapFault F));
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}
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