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29 lines
586 B
Nix
29 lines
586 B
Nix
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{ lib
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}:
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# https://doc.rust-lang.org/cargo/reference/registries.html
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{ dl
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, indexUrl
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}:
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let
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matches = m: builtins.match ".*${lib.escapeRegex m}.*" dl;
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hasMarker = lib.any (m: null != matches m) [
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"{crate}"
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"{version}"
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"{prefix}"
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"{lowerprefix}"
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"{sha256-checksum}"
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];
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fullDownloadUrl = if hasMarker then dl else "${dl}/{crate}/{version}/download";
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registryPrefix = "registry+";
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registryIndexUrl =
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if lib.hasPrefix registryPrefix indexUrl
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then indexUrl
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else "${registryPrefix}${indexUrl}";
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in
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{
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"${registryIndexUrl}" = fullDownloadUrl;
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}
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