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