diff --git a/nixide/src/expr/eval_state.rs b/nixide/src/expr/eval_state.rs
index 0103416..10644fb 100644
--- a/nixide/src/expr/eval_state.rs
+++ b/nixide/src/expr/eval_state.rs
@@ -101,7 +101,7 @@ impl EvalState {
             sys::nix_expr_eval_from_string(ctx.as_ptr(), self.as_ptr(), expr, path, value.as_ptr());
             value
         })
-        .map(|ptr| Value::from((ptr, self)))
+        .map(|ptr| Value::from((ptr, self.inner_ref().clone())))
     }
 }
 
diff --git a/nixide/src/expr/eval_state_builder.rs b/nixide/src/expr/eval_state_builder.rs
index af4fd7d..2ae0056 100644
--- a/nixide/src/expr/eval_state_builder.rs
+++ b/nixide/src/expr/eval_state_builder.rs
@@ -22,22 +22,6 @@ pub struct EvalStateBuilder {
     store: Rc<RefCell<Store>>,
 }
 
-// impl Clone for EvalStateBuilder {
-//     fn clone(&self) -> Self {
-//         let inner = self.inner.clone();
-//
-//         wrap::nix_fn!(|ctx: &ErrorContext| unsafe {
-//             sys::nix_gc_incref(ctx.as_ptr(), self.as_ptr() as *mut c_void);
-//         })
-//         .unwrap();
-//
-//         Self {
-//             inner,
-//             store: self.store.clone(),
-//         }
-//     }
-// }
-
 impl AsInnerPtr<sys::nix_eval_state_builder> for EvalStateBuilder {
     #[inline]
     unsafe fn as_ptr(&self) -> *mut sys::nix_eval_state_builder {
diff --git a/nixide/src/expr/values/attrs.rs b/nixide/src/expr/values/attrs.rs
index 4a3c2dd..0213e54 100644
--- a/nixide/src/expr/values/attrs.rs
+++ b/nixide/src/expr/values/attrs.rs
@@ -4,12 +4,12 @@ use std::ptr::{self, NonNull};
 use std::rc::Rc;
 
 use super::{NixThunk, NixValue, Value};
+use crate::NixError;
 use crate::errors::{ErrorContext, NixideError};
 use crate::stdext::{AsCPtr, CCharPtrExt};
 use crate::sys;
 use crate::util::wrappers::AsInnerPtr;
 use crate::util::{panic_issue_call_failed, wrap};
-use crate::{EvalState, NixError};
 
 pub struct NixAttrs {
     inner: NonNull<sys::nix_value>,
@@ -78,17 +78,13 @@ impl NixValue for NixAttrs {
         sys::ValueType_NIX_TYPE_ATTRS
     }
 
-    fn from(inner: NonNull<sys::nix_value>, state: &EvalState) -> Self {
+    fn from(inner: NonNull<sys::nix_value>, state: Rc<RefCell<NonNull<sys::EvalState>>>) -> Self {
         let len = wrap::nix_fn!(|ctx: &ErrorContext| unsafe {
             sys::nix_get_attrs_size(ctx.as_ptr(), inner.as_ptr())
         })
         .unwrap_or_else(|err| panic_issue_call_failed!("{}", err));
 
-        Self {
-            inner,
-            state: state.inner_ref().clone(),
-            len,
-        }
+        Self { inner, state, len }
     }
 }
 
@@ -120,7 +116,7 @@ impl NixAttrs {
             .to_utf8_string()
             .unwrap_or_else(|err| panic_issue_call_failed!("{}", err));
 
-        let value = Value::from((inner, &self.state));
+        let value = Value::from((inner, self.state.clone()));
 
         Some((name, value))
     }
@@ -147,7 +143,7 @@ impl NixAttrs {
             .to_utf8_string()
             .unwrap_or_else(|err| panic_issue_call_failed!("{}", err));
 
-        let value = <NixThunk as NixValue>::from(inner, &self.state);
+        let value = <NixThunk as NixValue>::from(inner, self.state.clone());
 
         Some((name, value))
     }
@@ -190,7 +186,7 @@ impl NixAttrs {
         });
 
         match result {
-            Ok(inner) => Some(Value::from((inner, &self.state))),
+            Ok(inner) => Some(Value::from((inner, self.state.clone()))),
 
             Err(NixideError::NixError {
                 err: NixError::KeyNotFound(_),
@@ -216,7 +212,7 @@ impl NixAttrs {
         });
 
         match result {
-            Ok(inner) => Some(<NixThunk as NixValue>::from(inner, &self.state)),
+            Ok(inner) => Some(<NixThunk as NixValue>::from(inner, self.state.clone())),
 
             Err(NixideError::NixError {
                 err: NixError::KeyNotFound(_),
diff --git a/nixide/src/expr/values/bool.rs b/nixide/src/expr/values/bool.rs
index 0fdb0d8..54fcade 100644
--- a/nixide/src/expr/values/bool.rs
+++ b/nixide/src/expr/values/bool.rs
@@ -5,10 +5,10 @@ use std::rc::Rc;
 
 use super::NixValue;
 use crate::errors::ErrorContext;
+use crate::sys;
 use crate::util::panic_issue_call_failed;
 use crate::util::wrap;
 use crate::util::wrappers::AsInnerPtr;
-use crate::{EvalState, sys};
 
 pub struct NixBool {
     inner: NonNull<sys::nix_value>,
@@ -77,7 +77,7 @@ impl NixValue for NixBool {
         sys::ValueType_NIX_TYPE_BOOL
     }
 
-    fn from(inner: NonNull<sys::nix_value>, state: &EvalState) -> Self {
+    fn from(inner: NonNull<sys::nix_value>, state: Rc<RefCell<NonNull<sys::EvalState>>>) -> Self {
         let value = wrap::nix_fn!(|ctx: &ErrorContext| unsafe {
             sys::nix_get_bool(ctx.as_ptr(), inner.as_ptr())
         })
@@ -87,7 +87,7 @@ impl NixValue for NixBool {
 
         Self {
             inner,
-            state: state.inner_ref().clone(),
+            state,
             value,
         }
     }
diff --git a/nixide/src/expr/values/float.rs b/nixide/src/expr/values/float.rs
index 54b6e11..3b0be68 100644
--- a/nixide/src/expr/values/float.rs
+++ b/nixide/src/expr/values/float.rs
@@ -4,7 +4,6 @@ use std::ptr::NonNull;
 use std::rc::Rc;
 
 use super::NixValue;
-use crate::EvalState;
 use crate::errors::ErrorContext;
 use crate::sys;
 use crate::util::wrappers::AsInnerPtr;
@@ -77,7 +76,7 @@ impl NixValue for NixFloat {
         sys::ValueType_NIX_TYPE_FLOAT
     }
 
-    fn from(inner: NonNull<sys::nix_value>, state: &EvalState) -> Self {
+    fn from(inner: NonNull<sys::nix_value>, state: Rc<RefCell<NonNull<sys::EvalState>>>) -> Self {
         let value = wrap::nix_fn!(|ctx: &ErrorContext| unsafe {
             sys::nix_get_float(ctx.as_ptr(), inner.as_ptr())
         })
@@ -87,7 +86,7 @@ impl NixValue for NixFloat {
 
         Self {
             inner,
-            state: state.inner_ref().clone(),
+            state,
             value,
         }
     }
diff --git a/nixide/src/expr/values/function.rs b/nixide/src/expr/values/function.rs
index cbf676e..5ed9a18 100644
--- a/nixide/src/expr/values/function.rs
+++ b/nixide/src/expr/values/function.rs
@@ -6,9 +6,9 @@ use std::rc::Rc;
 use super::{NixValue, Value};
 use crate::errors::ErrorContext;
 use crate::stdext::SliceExt;
+use crate::sys;
 use crate::util::wrappers::AsInnerPtr;
 use crate::util::{panic_issue_call_failed, wrap};
-use crate::{EvalState, sys};
 
 pub struct NixFunction {
     inner: NonNull<sys::nix_value>,
@@ -75,11 +75,8 @@ impl NixValue for NixFunction {
         sys::ValueType_NIX_TYPE_FUNCTION
     }
 
-    fn from(inner: NonNull<sys::nix_value>, state: &EvalState) -> Self {
-        Self {
-            inner,
-            state: state.inner_ref().clone(),
-        }
+    fn from(inner: NonNull<sys::nix_value>, state: Rc<RefCell<NonNull<sys::EvalState>>>) -> Self {
+        Self { inner, state }
     }
 }
 
@@ -104,7 +101,7 @@ impl NixFunction {
         })
         .unwrap_or_else(|err| panic_issue_call_failed!("{}", err));
 
-        Value::from((inner, &self.state))
+        Value::from((inner, self.state.clone()))
     }
 
     pub fn call_many<T>(&self, args: &[&T]) -> Value
@@ -128,7 +125,7 @@ impl NixFunction {
         })
         .unwrap_or_else(|err| panic_issue_call_failed!("{}", err));
 
-        Value::from((inner, &self.state))
+        Value::from((inner, self.state.clone()))
     }
 }
 
diff --git a/nixide/src/expr/values/int.rs b/nixide/src/expr/values/int.rs
index 7d7fe03..815edef 100644
--- a/nixide/src/expr/values/int.rs
+++ b/nixide/src/expr/values/int.rs
@@ -4,7 +4,6 @@ use std::ptr::NonNull;
 use std::rc::Rc;
 
 use super::NixValue;
-use crate::EvalState;
 use crate::errors::ErrorContext;
 use crate::sys;
 use crate::util::wrappers::AsInnerPtr;
@@ -77,7 +76,7 @@ impl NixValue for NixInt {
         sys::ValueType_NIX_TYPE_INT
     }
 
-    fn from(inner: NonNull<sys::nix_value>, state: &EvalState) -> Self {
+    fn from(inner: NonNull<sys::nix_value>, state: Rc<RefCell<NonNull<sys::EvalState>>>) -> Self {
         let value = wrap::nix_fn!(|ctx: &ErrorContext| unsafe {
             sys::nix_get_int(ctx.as_ptr(), inner.as_ptr())
         })
@@ -85,7 +84,7 @@ impl NixValue for NixInt {
 
         Self {
             inner,
-            state: state.inner_ref().clone(),
+            state,
             value,
         }
     }
diff --git a/nixide/src/expr/values/list.rs b/nixide/src/expr/values/list.rs
index 4d0264f..7172f8b 100644
--- a/nixide/src/expr/values/list.rs
+++ b/nixide/src/expr/values/list.rs
@@ -4,7 +4,6 @@ use std::ptr::NonNull;
 use std::rc::Rc;
 
 use super::{NixThunk, NixValue, Value};
-use crate::EvalState;
 use crate::errors::ErrorContext;
 use crate::sys;
 use crate::util::wrappers::AsInnerPtr;
@@ -75,11 +74,8 @@ impl NixValue for NixList {
         sys::ValueType_NIX_TYPE_LIST
     }
 
-    fn from(inner: NonNull<sys::nix_value>, state: &EvalState) -> Self {
-        Self {
-            inner,
-            state: state.inner_ref().clone(),
-        }
+    fn from(inner: NonNull<sys::nix_value>, state: Rc<RefCell<NonNull<sys::EvalState>>>) -> Self {
+        Self { inner, state }
     }
 }
 
@@ -127,7 +123,7 @@ impl NixList {
         })
         .unwrap_or_else(|err| panic_issue_call_failed!("{}", err));
 
-        Value::from((inner, &self.state))
+        Value::from((inner, self.state.clone()))
     }
 
     pub fn get_lazy(&self, index: u32) -> NixThunk {
@@ -141,6 +137,6 @@ impl NixList {
         })
         .unwrap_or_else(|err| panic_issue_call_failed!("{}", err));
 
-        <NixThunk as NixValue>::from(inner, &self.state)
+        <NixThunk as NixValue>::from(inner, self.state.clone())
     }
 }
diff --git a/nixide/src/expr/values/mod.rs b/nixide/src/expr/values/mod.rs
index f6f6b80..a06edde 100644
--- a/nixide/src/expr/values/mod.rs
+++ b/nixide/src/expr/values/mod.rs
@@ -23,10 +23,11 @@ pub use path::NixPath;
 pub use string::NixString;
 pub use thunk::NixThunk;
 
+use std::cell::RefCell;
 use std::fmt::{Debug, Display, Formatter, Result as FmtResult};
 use std::ptr::NonNull;
+use std::rc::Rc;
 
-use crate::EvalState;
 use crate::errors::ErrorContext;
 use crate::sys;
 use crate::sys::{
@@ -43,7 +44,7 @@ pub trait NixValue: Clone + Drop + Display + Debug + AsInnerPtr<sys::nix_value>
     fn type_id(&self) -> sys::ValueType;
 
     /// TODO
-    fn from(inner: NonNull<sys::nix_value>, state: &EvalState) -> Self;
+    fn from(inner: NonNull<sys::nix_value>, state: Rc<RefCell<NonNull<sys::EvalState>>>) -> Self;
 }
 
 /// A Nix value
@@ -109,12 +110,22 @@ pub enum Value {
     // Failed(NixFailed),
 }
 
-impl From<(NonNull<sys::nix_value>, &EvalState)> for Value {
-    fn from(value: (NonNull<sys::nix_value>, &EvalState)) -> Self {
+impl
+    From<(
+        NonNull<sys::nix_value>,
+        Rc<RefCell<NonNull<sys::EvalState>>>,
+    )> for Value
+{
+    fn from(
+        value: (
+            NonNull<sys::nix_value>,
+            Rc<RefCell<NonNull<sys::EvalState>>>,
+        ),
+    ) -> Self {
         let (inner, state) = value;
 
         wrap::nix_fn!(|ctx: &ErrorContext| unsafe {
-            sys::nix_value_force(ctx.as_ptr(), state.as_ptr(), inner.as_ptr())
+            sys::nix_value_force(ctx.as_ptr(), state.borrow().as_ptr(), inner.as_ptr())
         })
         .unwrap_or_else(|err| panic_issue_call_failed!("{}", err));
 
diff --git a/nixide/src/expr/values/null.rs b/nixide/src/expr/values/null.rs
index bccbe70..46bfe15 100644
--- a/nixide/src/expr/values/null.rs
+++ b/nixide/src/expr/values/null.rs
@@ -4,7 +4,6 @@ use std::ptr::NonNull;
 use std::rc::Rc;
 
 use super::NixValue;
-use crate::EvalState;
 use crate::errors::ErrorContext;
 use crate::sys;
 use crate::util::wrap;
@@ -75,10 +74,7 @@ impl NixValue for NixNull {
         sys::ValueType_NIX_TYPE_NULL
     }
 
-    fn from(inner: NonNull<sys::nix_value>, state: &EvalState) -> Self {
-        Self {
-            inner,
-            state: state.inner_ref().clone(),
-        }
+    fn from(inner: NonNull<sys::nix_value>, state: Rc<RefCell<NonNull<sys::EvalState>>>) -> Self {
+        Self { inner, state }
     }
 }
diff --git a/nixide/src/expr/values/path.rs b/nixide/src/expr/values/path.rs
index 0ba968c..f9a49a0 100644
--- a/nixide/src/expr/values/path.rs
+++ b/nixide/src/expr/values/path.rs
@@ -7,10 +7,10 @@ use std::rc::Rc;
 use super::NixValue;
 use crate::errors::ErrorContext;
 use crate::stdext::CCharPtrExt;
+use crate::sys;
 use crate::util::panic_issue_call_failed;
 use crate::util::wrap;
 use crate::util::wrappers::AsInnerPtr;
-use crate::{EvalState, sys};
 
 pub struct NixPath {
     inner: NonNull<sys::nix_value>,
@@ -79,7 +79,7 @@ impl NixValue for NixPath {
         sys::ValueType_NIX_TYPE_PATH
     }
 
-    fn from(inner: NonNull<sys::nix_value>, state: &EvalState) -> Self {
+    fn from(inner: NonNull<sys::nix_value>, state: Rc<RefCell<NonNull<sys::EvalState>>>) -> Self {
         let value = wrap::nix_fn!(|ctx: &ErrorContext| unsafe {
             sys::nix_get_path_string(ctx.as_ptr(), inner.as_ptr())
         })
@@ -89,7 +89,7 @@ impl NixValue for NixPath {
 
         Self {
             inner,
-            state: state.inner_ref().clone(),
+            state,
             value,
         }
     }
diff --git a/nixide/src/expr/values/string.rs b/nixide/src/expr/values/string.rs
index 20864b9..d2582de 100644
--- a/nixide/src/expr/values/string.rs
+++ b/nixide/src/expr/values/string.rs
@@ -6,10 +6,10 @@ use std::rc::Rc;
 
 use super::NixValue;
 use crate::errors::ErrorContext;
+use crate::sys;
 use crate::util::panic_issue_call_failed;
 use crate::util::wrap;
 use crate::util::wrappers::AsInnerPtr;
-use crate::{EvalState, sys};
 
 pub struct NixString {
     inner: NonNull<sys::nix_value>,
@@ -78,7 +78,7 @@ impl NixValue for NixString {
         sys::ValueType_NIX_TYPE_STRING
     }
 
-    fn from(inner: NonNull<sys::nix_value>, state: &EvalState) -> Self {
+    fn from(inner: NonNull<sys::nix_value>, state: Rc<RefCell<NonNull<sys::EvalState>>>) -> Self {
         let value = wrap::nix_string_callback!(
             |callback, userdata: *mut __UserData, ctx: &ErrorContext| unsafe {
                 sys::nix_get_string(
@@ -93,7 +93,7 @@ impl NixValue for NixString {
 
         Self {
             inner,
-            state: state.inner_ref().clone(),
+            state,
             value,
         }
     }
diff --git a/nixide/src/expr/values/thunk.rs b/nixide/src/expr/values/thunk.rs
index c7f0cb3..294745e 100644
--- a/nixide/src/expr/values/thunk.rs
+++ b/nixide/src/expr/values/thunk.rs
@@ -4,7 +4,6 @@ use std::ptr::NonNull;
 use std::rc::Rc;
 
 use super::{NixValue, Value};
-use crate::EvalState;
 use crate::errors::ErrorContext;
 use crate::sys;
 use crate::util::wrappers::AsInnerPtr;
@@ -75,11 +74,8 @@ impl NixValue for NixThunk {
         sys::ValueType_NIX_TYPE_THUNK
     }
 
-    fn from(inner: NonNull<sys::nix_value>, state: &EvalState) -> Self {
-        Self {
-            inner,
-            state: state.inner_ref().clone(),
-        }
+    fn from(inner: NonNull<sys::nix_value>, state: Rc<RefCell<NonNull<sys::EvalState>>>) -> Self {
+        Self { inner, state }
     }
 }
 
@@ -94,6 +90,6 @@ impl NixThunk {
         })
         .unwrap_or_else(|err| panic_issue_call_failed!("{}", err));
 
-        Value::from((self.inner, &self.state))
+        Value::from((self.inner, self.state.clone()))
     }
 }
diff --git a/nixide/src/flake/flake_settings.rs b/nixide/src/flake/flake_settings.rs
index 295115b..9d11358 100644
--- a/nixide/src/flake/flake_settings.rs
+++ b/nixide/src/flake/flake_settings.rs
@@ -1,4 +1,3 @@
-use std::ffi::c_void;
 use std::ptr::NonNull;
 
 use crate::NixideResult;
@@ -20,19 +19,6 @@ impl Drop for FlakeSettings {
     }
 }
 
-// impl Clone for FlakeSettings {
-//     fn clone(&self) -> Self {
-//         let inner = self.inner.clone();
-//
-//         wrap::nix_fn!(|ctx: &ErrorContext| unsafe {
-//             sys::nix_gc_incref(ctx.as_ptr(), self.as_ptr() as *mut c_void);
-//         })
-//         .unwrap();
-//
-//         Self { inner }
-//     }
-// }
-
 impl AsInnerPtr<sys::nix_flake_settings> for FlakeSettings {
     #[inline]
     unsafe fn as_ptr(&self) -> *mut sys::nix_flake_settings {
diff --git a/nixide/src/flake/locked_flake.rs b/nixide/src/flake/locked_flake.rs
index a2ae9af..4f0237c 100644
--- a/nixide/src/flake/locked_flake.rs
+++ b/nixide/src/flake/locked_flake.rs
@@ -1,6 +1,5 @@
 // XXX: TODO: find a way to read directly from FlakeSettings and FetchersSettings (the C++ classes)
 
-use std::ffi::c_void;
 use std::ptr::NonNull;
 
 use super::{FetchersSettings, FlakeLockFlags, FlakeReference, FlakeSettings};
@@ -130,8 +129,8 @@ mod tests {
     fn flake_settings_getflake_exists() {
         init();
 
-        let store = Store::default().expect("Failed to open store connection");
-        let state = EvalStateBuilder::new(&store)
+        let store_ref = Store::default().expect("Failed to open store connection");
+        let state = EvalStateBuilder::new(store_ref.clone())
             .unwrap()
             .flakes()
             .unwrap()
@@ -165,10 +164,10 @@ mod tests {
         )
         .unwrap();
 
-        let store = Store::default().unwrap();
+        let store_ref = Store::default().unwrap();
         let flake_settings = FlakeSettings::new().unwrap();
 
-        let mut eval_state = EvalStateBuilder::new(&store)
+        let mut eval_state = EvalStateBuilder::new(store_ref.clone())
             .unwrap()
             .set_flake_settings(&flake_settings)
             .unwrap()
@@ -214,10 +213,10 @@ mod tests {
     fn flake_lock_load_flake_with_flags() {
         init();
 
-        let store = Store::default().unwrap();
+        let store_ref = Store::default().unwrap();
         let fetchers_settings = FetchersSettings::new().unwrap();
         let flake_settings = FlakeSettings::new().unwrap();
-        let mut eval_state = EvalStateBuilder::new(&store)
+        let mut eval_state = EvalStateBuilder::new(store_ref.clone())
             .unwrap()
             .set_flake_settings(&flake_settings)
             .unwrap()
diff --git a/nixide/src/store/tests.rs b/nixide/src/store/tests.rs
index 5943077..1a9c3ac 100644
--- a/nixide/src/store/tests.rs
+++ b/nixide/src/store/tests.rs
@@ -1,10 +1,7 @@
 use serial_test::serial;
 
 use super::{Store, StorePath};
-use crate::errors::ErrorContext;
 use crate::init::LIBNIX_INIT_STATUS;
-use crate::sys;
-use crate::util::wrappers::AsInnerPtr as _;
 
 #[test]
 #[serial]
@@ -22,7 +19,7 @@ fn test_store_path_parse() {
     let store = Store::default().expect("Failed to open store");
 
     // Try parsing a well-formed store path
-    let result = StorePath::fake_path(&store);
+    let result = StorePath::fake_path(&store.borrow());
     result.expect("idk hopefully this fails");
 }
 
@@ -34,7 +31,8 @@ fn test_store_path_clone() {
     let store = Store::default().expect("Failed to open store");
 
     // Try to get a valid store path by parsing
-    let path = StorePath::fake_path(&store).expect("Failed to create `StorePath::fake_path`");
+    let path =
+        StorePath::fake_path(&store.borrow()).expect("Failed to create `StorePath::fake_path`");
     let cloned = path.clone();
 
     // Assert that the cloned path has the same name as the original