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|
{ lib
, fetchurl
, stdenv
, callPackages
, runCommand
}:
let
inherit (builtins) match elemAt toJSON removeAttrs;
inherit (lib) importJSON mapAttrs;
matchGitHubReference = match "github(.com)?:.+";
getName = package: package.name or "unknown";
getVersion = package: package.version or "0.0.0";
# Fetch a module from package-lock.json -> packages
fetchModule =
{ module
, npmRoot ? null
}: (
if module ? "resolved" then
(
let
# Parse scheme from URL
mUrl = match "(.+)://(.+)" module.resolved;
scheme = elemAt mUrl 0;
in
(
if mUrl == null then
(
assert npmRoot != null; {
outPath = npmRoot + "/${module.resolved}";
}
)
else if (scheme == "http" || scheme == "https") then
(
fetchurl {
url = module.resolved;
hash = module.integrity;
}
)
else if lib.hasPrefix "git" module.resolved then
(
builtins.fetchGit {
url = module.resolved;
}
)
else throw "Unsupported URL scheme: ${scheme}"
)
)
else null
);
# Manage node_modules outside of the store with hooks
hooks = callPackages ./hooks { };
in
{
importNpmLock =
{ npmRoot ? null
, package ? importJSON (npmRoot + "/package.json")
, packageLock ? importJSON (npmRoot + "/package-lock.json")
, pname ? getName package
, version ? getVersion package
}:
let
mapLockDependencies =
mapAttrs
(name: version: (
# Substitute the constraint with the version of the dependency from the top-level of package-lock.
if (
# if the version is `latest`
version == "latest"
||
# Or if it's a github reference
matchGitHubReference version != null
) then packageLock'.packages.${"node_modules/${name}"}.version
# But not a regular version constraint
else version
));
packageLock' = packageLock // {
packages =
mapAttrs
(_: module:
let
src = fetchModule {
inherit module npmRoot;
};
in
(removeAttrs module [
"link"
"funding"
]) // lib.optionalAttrs (src != null) {
resolved = "file:${src}";
} // lib.optionalAttrs (module ? dependencies) {
dependencies = mapLockDependencies module.dependencies;
} // lib.optionalAttrs (module ? optionalDependencies) {
optionalDependencies = mapLockDependencies module.optionalDependencies;
})
packageLock.packages;
};
mapPackageDependencies = mapAttrs (name: _: packageLock'.packages.${"node_modules/${name}"}.resolved);
# Substitute dependency references in package.json with Nix store paths
packageJSON' = package // lib.optionalAttrs (package ? dependencies) {
dependencies = mapPackageDependencies package.dependencies;
} // lib.optionalAttrs (package ? devDependencies) {
devDependencies = mapPackageDependencies package.devDependencies;
};
pname = package.name or "unknown";
in
runCommand "${pname}-${version}-sources"
{
inherit pname version;
passAsFile = [ "package" "packageLock" ];
package = toJSON packageJSON';
packageLock = toJSON packageLock';
} ''
mkdir $out
cp "$packagePath" $out/package.json
cp "$packageLockPath" $out/package-lock.json
'';
inherit hooks;
inherit (hooks) npmConfigHook;
__functor = self: self.importNpmLock;
}
|
