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103 lines
2.9 KiB
Nix
103 lines
2.9 KiB
Nix
{ downloadCargoPackage
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, lib
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, runCommandLocal
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}:
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{ cargoConfigs
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, lockPackages
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}:
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let
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inherit (builtins)
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attrNames
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concatStringsSep
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filter
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hasAttr
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hashString
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head
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length
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mapAttrs
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placeholder
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readFile;
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inherit (lib)
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concatMapStrings
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concatStrings
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escapeShellArg
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flatten
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groupBy
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hasPrefix
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mapAttrs'
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mapAttrsToList
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nameValuePair;
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hash = hashString "sha256";
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# Local crates will show up in the lock file with no checksum/source,
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# so should filter them out without trying to download them
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lockedPackagesFromRegistry = filter
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(p: p ? checksum && hasPrefix "registry" (p.source or ""))
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lockPackages;
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lockedRegistryGroups = groupBy (p: p.source) lockedPackagesFromRegistry;
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vendorSingleRegistry = packages: runCommandLocal "vendor-registry" { } ''
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mkdir -p $out
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${concatMapStrings (p: ''
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ln -s ${escapeShellArg (downloadCargoPackage p)} $out/${escapeShellArg "${p.name}-${p.version}"}
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'') packages}
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'';
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parsedCargoTomls = map (p: builtins.fromTOML (readFile p)) cargoConfigs;
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allCargoRegistries = flatten (map (c: c.registries or [ ]) parsedCargoTomls);
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allCargoRegistryPairs = flatten (map (mapAttrsToList (name: value: { inherit name value; })) allCargoRegistries);
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allCargoRegistryPairsWithIndex = filter (r: r ? value.index) allCargoRegistryPairs;
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configuredRegistries = mapAttrs (_: map (r: r.value.index)) (groupBy (x: x.name) allCargoRegistryPairsWithIndex);
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# Append the default crates.io registry, but allow it to be overridden
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registries = {
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"crates-io" = [ "https://github.com/rust-lang/crates.io-index" ];
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} // configuredRegistries;
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sources = mapAttrs'
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(url: packages: nameValuePair (hash url) (vendorSingleRegistry packages))
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lockedRegistryGroups;
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configLocalSources = concatMapStrings
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(hashedUrl: ''
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[source.nix-sources-${hashedUrl}]
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directory = "${placeholder "out"}/${hashedUrl}"
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'')
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(attrNames sources);
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configReplaceRegistries = mapAttrsToList
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(name: urls:
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let
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actuallyConfigured = filter (u: hasAttr "registry+${u}" lockedRegistryGroups) urls;
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numConfigured = length actuallyConfigured;
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in
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if numConfigured == 0 then ""
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else if numConfigured > 1 then
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throw ''
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there are multiple distinct registries configured with the same name.
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please ensure that each unique registry name is used with exactly one registry url.
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${name} is used with:
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${concatStringsSep "\n" urls}
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''
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else
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let
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url = head actuallyConfigured;
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hashed = hash "registry+${url}";
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in
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''
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[source.${name}]
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registry = "${url}"
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replace-with = "nix-sources-${hashed}"
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''
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)
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registries;
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in
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{
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inherit sources;
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config = configLocalSources + (concatStrings configReplaceRegistries);
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}
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