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61 lines
1.2 KiB
Nix
61 lines
1.2 KiB
Nix
{ crateRegistries
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, lib
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}:
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{ name
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, version
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, source
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, checksum
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, ...
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}:
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let
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substr = builtins.substring;
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# https://doc.rust-lang.org/cargo/reference/registries.html
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nameLen = builtins.stringLength name;
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prefix =
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if nameLen == 1 then "1"
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else if nameLen == 2 then "2"
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else if nameLen == 3 then "3/${substr 0 1 name}"
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else "${substr 0 2 name}/${substr 2 4 name}";
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dl = crateRegistries.${source} or (throw ''
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not sure how to download crates from ${source}.
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for example, this can be resolved with:
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craneLib = crane.lib.''${system}.appendCrateRegistries [
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(lib.registryFromDownloadUrl {
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dl = "https://crates.io/api/v1/crates";
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indexUrl = "https://github.com/rust-lang/crates.io-index";
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})
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# Or, alternatively
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(lib.registryFromGitIndex {
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url = "https://github.com/Hirevo/alexandrie-index";
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rev = "90df25daf291d402d1ded8c32c23d5e1498c6725";
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})
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];
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# Then use the new craneLib instance as you would normally
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craneLib.buildPackage {
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# ...
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}
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'');
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in
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builtins.replaceStrings
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[
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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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[
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name
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version
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prefix
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(lib.toLower prefix)
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checksum
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]
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dl
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