fix(resolver): honor root self-provide/replace as require fulfilment

Port Composer's RuleSetGenerator::createRequireRule self-fulfilling
branch: when the root composer.json's `provide` or `replace` covers a
name it also requires (with intersecting constraints), skip emitting an
install-one-of rule for that root require. Composer relies on the root
package being a fixed entry in the pool so whatProvides() includes it;
Mozart does not yet add the root to the pool, so the same decision is
made via explicit `root_provide` / `root_replace` tables threaded
through ResolveRequest. Without this, an inline repo package whose name
matches the root's provide was being force-installed.

Fixes installer fixtures `provider_satisfies_its_own_requirement` and
`replacer_satisfies_its_own_requirement`.

1 files changed, 2 insertions, 2 deletions

diff --git a/crates/mozart/tests/installer.rs b/crates/mozart/tests/installer.rs
index fcb29c1..99ef2d8 100644
--- a/crates/mozart/tests/installer.rs
+++ b/crates/mozart/tests/installer.rs
@@ -327,7 +327,7 @@ installer_fixture!(
     provider_packages_can_not_be_installed_unless_selected,
     ignore
 );
-installer_fixture!(provider_satisfies_its_own_requirement, ignore);
+installer_fixture!(provider_satisfies_its_own_requirement);
 installer_fixture!(remove_deletes_unused_deps);
 installer_fixture!(
     remove_does_nothing_if_removal_requires_update_of_dep,
@@ -342,7 +342,7 @@ installer_fixture!(
     replaced_packages_should_not_be_installed_when_installing_from_lock,
     ignore
 );
-installer_fixture!(replacer_satisfies_its_own_requirement, ignore);
+installer_fixture!(replacer_satisfies_its_own_requirement);
 installer_fixture!(repositories_priorities, ignore);
 installer_fixture!(repositories_priorities2, ignore);
 installer_fixture!(repositories_priorities3, ignore);