Add check_dependencies feature

Cargo.toml

@@ -44,6 +44,7 @@ netlink-sys = "0.8"
 
 [features]
 default = ["serde"]
+check_dependencies = []
 serde = ["dep:serde"]
 
 [profile.release]

src/lib.rs

@@ -61,6 +61,7 @@ pub(crate) mod netlink;
 mod utils;
 mod wgapi;
 
+#[cfg(feature = "check_dependencies")]
 mod dependencies;
 #[cfg(target_os = "freebsd")]
 mod wgapi_freebsd;

src/wgapi.rs

@@ -1,7 +1,9 @@
 //! Shared multi-platform management API abstraction
 use std::marker::PhantomData;
 
-use crate::{dependencies::check_external_dependencies, error::WireguardInterfaceError};
+#[cfg(feature = "check_dependencies")]
+use crate::dependencies::check_external_dependencies;
+use crate::error::WireguardInterfaceError;
 
 pub struct Kernel;
 pub struct Userspace;
@@ -18,6 +20,7 @@ pub struct WGApi<API = Kernel> {
 impl WGApi {
     /// Create new instance of `WGApi`.
     pub fn new(ifname: String) -> Result<Self, WireguardInterfaceError> {
+        #[cfg(feature = "check_dependencies")]
         check_external_dependencies()?;
         Ok(WGApi {
             ifname,

src/wgapi_userspace.rs

@@ -9,6 +9,8 @@ use std::{
     time::Duration,
 };
 
+#[cfg(feature = "check_dependencies")]
+use crate::dependencies::check_external_dependencies;
 #[cfg(target_os = "linux")]
 use crate::netlink;
 #[cfg(any(target_os = "freebsd", target_os = "linux", target_os = "netbsd"))]
@@ -17,7 +19,6 @@ use crate::utils::clear_dns;
 use crate::{bsd, utils::resolve};
 use crate::{
     check_command_output_status,
-    dependencies::check_external_dependencies,
     error::WireguardInterfaceError,
     utils::{add_peer_routing, configure_dns},
     wgapi::{Userspace, WGApi},
@@ -37,6 +38,7 @@ impl WGApi<Userspace> {
     /// # Errors
     /// Will return `WireguardInterfaceError` if `wireguard-go` can't be found.
     pub fn new(ifname: String) -> Result<Self, WireguardInterfaceError> {
+        #[cfg(feature = "check_dependencies")]
         check_external_dependencies()?;
         Ok(WGApi {
             ifname,