2 files changed, 6 insertions, 4 deletions
diff --git a/crates/shirabe/src/dependency_resolver/pool_builder.rs b/crates/shirabe/src/dependency_resolver/pool_builder.rs
index 38a083e..0efaac5 100644
--- a/crates/shirabe/src/dependency_resolver/pool_builder.rs
+++ b/crates/shirabe/src/dependency_resolver/pool_builder.rs
@@ -22,6 +22,7 @@ use crate::dependency_resolver::Request;
 use crate::dependency_resolver::SecurityAdvisoryPoolFilter;
 use crate::event_dispatcher::EventDispatcher;
 use crate::io::IOInterface;
+use crate::io::IOInterfaceImmutable;
 use crate::package::AliasPackage;
 use crate::package::BasePackageHandle;
 use crate::package::CompleteAliasPackage;
@@ -46,7 +47,7 @@ pub struct PoolBuilder {
     temporary_constraints: IndexMap<String, AnyConstraint>,
     event_dispatcher: Option<std::rc::Rc<std::cell::RefCell<EventDispatcher>>>,
     pool_optimizer: Option<PoolOptimizer>,
-    io: Box<dyn IOInterface>,
+    io: std::rc::Rc<std::cell::RefCell<dyn IOInterface>>,
     alias_map: IndexMap<String, IndexMap<i64, AliasPackage>>,
     packages_to_load: IndexMap<String, AnyConstraint>,
     loaded_packages: IndexMap<String, AnyConstraint>,
@@ -87,7 +88,7 @@ impl PoolBuilder {
         stability_flags: IndexMap<String, i64>,
         root_aliases: IndexMap<String, IndexMap<String, IndexMap<String, String>>>,
         root_references: IndexMap<String, String>,
-        io: Box<dyn IOInterface>,
+        io: std::rc::Rc<std::cell::RefCell<dyn IOInterface>>,
         event_dispatcher: Option<std::rc::Rc<std::cell::RefCell<EventDispatcher>>>,
         pool_optimizer: Option<PoolOptimizer>,
         temporary_constraints: IndexMap<String, AnyConstraint>,
diff --git a/crates/shirabe/src/dependency_resolver/solver.rs b/crates/shirabe/src/dependency_resolver/solver.rs
index 2610f07..4f8d91d 100644
--- a/crates/shirabe/src/dependency_resolver/solver.rs
+++ b/crates/shirabe/src/dependency_resolver/solver.rs
@@ -29,6 +29,7 @@ use crate::filter::platform_requirement_filter::IgnoreListPlatformRequirementFil
 use crate::filter::platform_requirement_filter::PlatformRequirementFilterFactory;
 use crate::filter::platform_requirement_filter::PlatformRequirementFilterInterface;
 use crate::io::IOInterface;
+use crate::io::IOInterfaceImmutable;
 use crate::package::BasePackageHandle;
 
 #[derive(Debug)]
@@ -51,7 +52,7 @@ pub struct Solver {
 
     pub test_flag_learned_positive_literal: bool,
 
-    pub(crate) io: Box<dyn IOInterface>,
+    pub(crate) io: std::rc::Rc<std::cell::RefCell<dyn IOInterface>>,
 }
 
 impl Solver {
@@ -61,7 +62,7 @@ impl Solver {
     pub fn new(
         policy: Box<dyn PolicyInterface>,
         pool: std::rc::Rc<std::cell::RefCell<Pool>>,
-        io: Box<dyn IOInterface>,
+        io: std::rc::Rc<std::cell::RefCell<dyn IOInterface>>,
     ) -> Self {
         let decisions = Decisions::new(pool.clone());
         Self {