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{ stdenv, lib, crystal, linkFarm, fetchFromGitHub }:
{ # Generate shards.nix with `nix-shell -p crystal2nix --run crystal2nix` in the projects root
shardsFile ? null
# Specify binaries to build in the form { foo.src = "src/foo.cr"; }
# The default `crystal build` options can be overridden with { foo.options = [ "--no-debug" ]; }
, crystalBinaries ? {}
, ...
}@args:
let
mkDerivationArgs = builtins.removeAttrs args [ "shardsFile" "crystalBinaries" ];
crystalLib = linkFarm "crystal-lib" (lib.mapAttrsToList (name: value: {
inherit name;
path = fetchFromGitHub value;
}) (import shardsFile));
defaultOptions = [ "--release" "--progress" "--no-debug" "--verbose" ];
in stdenv.mkDerivation (mkDerivationArgs // {
configurePhase = args.configurePhase or ''
runHook preConfigure
${lib.optionalString (shardsFile != null) "ln -s ${crystalLib} lib"}
runHook postConfigure
'';
buildInputs = args.buildInputs or [] ++ [ crystal ];
buildPhase = args.buildPhase or ''
runHook preBuild
${lib.concatStringsSep "\n" (lib.mapAttrsToList (bin: attrs: ''
crystal ${lib.escapeShellArgs ([
"build"
"-o" bin
(attrs.src or (throw "No source file for crystal binary ${bin} provided"))
] ++ attrs.options or defaultOptions)}
'') crystalBinaries)}
runHook postBuild
'';
installPhase = args.installPhase or ''
runHook preInstall
mkdir -p "$out/bin"
${lib.concatMapStringsSep "\n" (bin: ''
mv ${lib.escapeShellArgs [ bin "${placeholder "out"}/bin/${bin}" ]}
'') (lib.attrNames crystalBinaries)}
runHook postInstall
'';
meta = args.meta or {} // {
platforms = args.meta.platforms or crystal.meta.platforms;
};
})
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