131 lines
3.2 KiB
Nix
131 lines
3.2 KiB
Nix
{ lib, pkgs }:
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let
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inherit (pkgs) buildPackages callPackage;
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# Implementation notes:
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# Libconfig spec: https://hyperrealm.github.io/libconfig/libconfig_manual.html
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#
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# Since libconfig does not allow setting names to start with an underscore,
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# this is used as a prefix for both special types and include directives.
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#
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# The difference between 32bit and 64bit values became optional in libconfig
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# 1.5, so we assume 64bit values for all numbers.
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libconfig-generator = buildPackages.rustPlatform.buildRustPackage {
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name = "libconfig-generator";
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version = "0.1.0";
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src = ./src;
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passthru.updateScript = ./update.sh;
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cargoLock.lockFile = ./src/Cargo.lock;
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};
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libconfig-validator =
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buildPackages.runCommandCC "libconfig-validator"
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{ buildInputs = with buildPackages; [ libconfig ]; }
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''
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mkdir -p "$out/bin"
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$CC -lconfig -x c - -o "$out/bin/libconfig-validator" ${./validator.c}
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'';
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in
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{
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format =
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{
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generator ? libconfig-generator,
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validator ? libconfig-validator,
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}:
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{
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inherit generator;
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type =
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with lib.types;
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let
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valueType =
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(oneOf [
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bool
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int
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float
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str
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path
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(attrsOf valueType)
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(listOf valueType)
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])
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// {
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description = "libconfig value";
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};
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in
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attrsOf valueType;
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lib = {
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mkHex = value: {
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_type = "hex";
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inherit value;
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};
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mkOctal = value: {
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_type = "octal";
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inherit value;
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};
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mkFloat = value: {
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_type = "float";
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inherit value;
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};
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mkArray = value: {
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_type = "array";
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inherit value;
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};
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mkList = value: {
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_type = "list";
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inherit value;
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};
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};
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generate =
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name: value:
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callPackage
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(
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{
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stdenvNoCC,
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libconfig-generator,
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libconfig-validator,
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writeText,
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}:
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stdenvNoCC.mkDerivation rec {
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inherit name;
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dontUnpack = true;
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json = builtins.toJSON value;
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passAsFile = [ "json" ];
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strictDeps = true;
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nativeBuildInputs = [ libconfig-generator ];
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buildPhase = ''
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runHook preBuild
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libconfig-generator < $jsonPath > output.cfg
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runHook postBuild
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'';
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doCheck = true;
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nativeCheckInputs = [ libconfig-validator ];
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checkPhase = ''
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runHook preCheck
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libconfig-validator output.cfg
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runHook postCheck
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'';
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installPhase = ''
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runHook preInstall
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mv output.cfg $out
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runHook postInstall
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'';
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passthru.json = writeText "${name}.json" json;
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}
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)
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{
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libconfig-generator = generator;
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libconfig-validator = validator;
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};
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};
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}
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