diff --git a/proxmox-access-control/Cargo.toml b/proxmox-access-control/Cargo.toml
index 239dcc91..8f50a074 100644
--- a/proxmox-access-control/Cargo.toml
+++ b/proxmox-access-control/Cargo.toml
@@ -14,17 +14,29 @@ description = "A collection of utilities to implement access control management.
 
 [dependencies]
 anyhow.workspace = true
-nix.workspace = true
-openssl.workspace = true
+nix = { workspace = true, optional = true }
+openssl = { workspace = true, optional = true }
 serde.workspace = true
-serde_json.workspace = true
+serde_json = { workspace = true, optional = true }
 
-# proxmox-notify.workspace = true
 proxmox-auth-api = { workspace = true, features = [ "api-types" ] }
-proxmox-router = { workspace = true }
+proxmox-router = { workspace = true, optional = true }
 proxmox-schema.workspace = true
-proxmox-section-config.workspace = true
-proxmox-product-config.workspace = true
-proxmox-shared-memory.workspace = true
-proxmox-sys = { workspace = true, features = [ "crypt" ] }
-proxmox-time.workspace = true
+proxmox-section-config = { workspace = true, optional = true }
+proxmox-product-config = { workspace = true, optional = true }
+proxmox-shared-memory = { workspace = true, optional = true }
+proxmox-sys = { workspace = true, features = [ "crypt" ], optional = true }
+proxmox-time = { workspace = true }
+
+[features]
+default = []
+impl = [
+    "dep:nix",
+    "dep:openssl",
+    "dep:proxmox-product-config",
+    "dep:proxmox-router",
+    "dep:proxmox-section-config",
+    "dep:proxmox-shared-memory",
+    "dep:proxmox-sys",
+    "dep:serde_json",
+]
diff --git a/proxmox-access-control/src/lib.rs b/proxmox-access-control/src/lib.rs
index 16132072..7fabcfb5 100644
--- a/proxmox-access-control/src/lib.rs
+++ b/proxmox-access-control/src/lib.rs
@@ -1,8 +1,18 @@
-pub mod acl;
-pub mod init;
-pub mod token_shadow;
 pub mod types;
+
+#[cfg(feature = "impl")]
+pub mod acl;
+
+#[cfg(feature = "impl")]
+pub mod init;
+
+#[cfg(feature = "impl")]
+pub mod token_shadow;
+
+#[cfg(feature = "impl")]
 pub mod user;
 
+#[cfg(feature = "impl")]
 mod cached_user_info;
+#[cfg(feature = "impl")]
 pub use cached_user_info::CachedUserInfo;