2020-10-12 00:22:58 +00:00
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{ lib }:
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2021-11-04 16:42:44 +00:00
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let
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inherit (lib)
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genList length lowerChars replaceStrings stringToCharacters upperChars;
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in {
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2020-10-12 00:22:58 +00:00
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# Figures out a valid Nix store name for the given path.
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storeFileName = path:
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let
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# All characters that are considered safe. Note "-" is not
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# included to avoid "-" followed by digit being interpreted as a
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# version.
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safeChars = [ "+" "." "_" "?" "=" ] ++ lowerChars ++ upperChars
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++ stringToCharacters "0123456789";
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empties = l: genList (x: "") (length l);
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unsafeInName =
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stringToCharacters (replaceStrings safeChars (empties safeChars) path);
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safeName = replaceStrings unsafeInName (empties unsafeInName) path;
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in "hm_" + safeName;
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}
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