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lockFlake(): Allow registry lookups for the top-level flake

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Fixes #13050.
This commit is contained in:
Eelco Dolstra 2025-04-24 18:54:16 +02:00
parent dda265f09a
commit 68de26d38a
11 changed files with 53 additions and 26 deletions
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13
src/libfetchers/registry.cc
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@ -14,6 +14,8 @@ std::shared_ptr<Registry> Registry::read(
const Settings & settings,
const Path & path, RegistryType type)
{
debug("reading registry '%s'", path);
auto registry = std::make_shared<Registry>(settings, type);
if (!pathExists(path))
@ -179,29 +181,36 @@ Registries getRegistries(const Settings & settings, ref<Store> store)
std::pair<Input, Attrs> lookupInRegistries(
ref<Store> store,
const Input & _input,
const RegistryFilter & filter)
UseRegistries useRegistries)
{
Attrs extraAttrs;
int n = 0;
Input input(_input);
if (useRegistries == UseRegistries::No)
return {input, extraAttrs};
restart:
n++;
if (n > 100) throw Error("cycle detected in flake registry for '%s'", input.to_string());
for (auto & registry : getRegistries(*input.settings, store)) {
if (filter && !filter(registry->type)) continue;
if (useRegistries == UseRegistries::Limited
&& !(registry->type == fetchers::Registry::Flag || registry->type == fetchers::Registry::Global))
continue;
// FIXME: O(n)
for (auto & entry : registry->entries) {
if (entry.exact) {
if (entry.from == input) {
debug("resolved flakeref '%s' against registry %d exactly", input.to_string(), registry->type);
input = entry.to;
extraAttrs = entry.extraAttrs;
goto restart;
}
} else {
if (entry.from.contains(input)) {
debug("resolved flakeref '%s' against registry %d", input.to_string(), registry->type);
input = entry.to.applyOverrides(
!entry.from.getRef() && input.getRef() ? input.getRef() : std::optional<std::string>(),
!entry.from.getRev() && input.getRev() ? input.getRev() : std::optional<Hash>());