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https://github.com/ilyakooo0/nixpkgs.git
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57 lines
1.7 KiB
Nix
57 lines
1.7 KiB
Nix
{ lib, fetchgit, formats }:
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with lib;
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let
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json = formats.json { };
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in rec {
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# Derive a pin file from workspace state.
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mkPinFile = workspaceState:
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assert workspaceState.version == 5;
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json.generate "Package.resolved" {
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version = 1;
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object.pins = map (dep: {
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package = dep.packageRef.name;
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repositoryURL = dep.packageRef.location;
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state = dep.state.checkoutState;
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}) workspaceState.object.dependencies;
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};
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# Make packaging helpers from swiftpm2nix generated output.
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helpers = generated: let
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inherit (import generated) workspaceStateFile hashes;
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workspaceState = builtins.fromJSON (builtins.readFile workspaceStateFile);
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pinFile = mkPinFile workspaceState;
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in rec {
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# Create fetch expressions for dependencies.
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sources = listToAttrs (
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map (dep: nameValuePair dep.subpath (fetchgit {
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url = dep.packageRef.location;
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rev = dep.state.checkoutState.revision;
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sha256 = hashes.${dep.subpath};
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})) workspaceState.object.dependencies
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);
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# Configure phase snippet for use in packaging.
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configure = ''
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mkdir -p .build/checkouts
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ln -sf ${pinFile} ./Package.resolved
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install -m 0600 ${workspaceStateFile} ./.build/workspace-state.json
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''
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+ concatStrings (mapAttrsToList (name: src: ''
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ln -s '${src}' '.build/checkouts/${name}'
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'') sources)
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+ ''
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# Helper that makes a swiftpm dependency mutable by copying the source.
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swiftpmMakeMutable() {
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local orig="$(readlink .build/checkouts/$1)"
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rm .build/checkouts/$1
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cp -r "$orig" .build/checkouts/$1
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chmod -R u+w .build/checkouts/$1
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}
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'';
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};
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}
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