diff --git a/Cargo.lock b/Cargo.lock
index e05958928..a8ea01dc1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1058,6 +1058,7 @@ dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode_categories 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode_names2 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wtf8 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 9a163b07a..b55f47497 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -41,3 +41,9 @@ version = "0.2"
 [[bin]]
 name = "rustpython"
 path = "src/main.rs"
+
+# Uncommment when you want to compile/check with redoxer
+# [patch.crates-io]
+# time = { git = "https://gitlab.redox-os.org/redox-os/time.git", branch = "redox-unix" }
+# libc = { git = "https://github.com/AdminXVII/libc",	branch = "extra-traits-redox" }
+# nix = { git = "https://github.com/AdminXVII/nix",	branch = "add-redox-support" }
diff --git a/vm/src/stdlib/os.rs b/vm/src/stdlib/os.rs
index 9f65523f3..227edcab1 100644
--- a/vm/src/stdlib/os.rs
+++ b/vm/src/stdlib/os.rs
@@ -786,7 +786,7 @@ fn os_getpgid(pid: PyIntRef, vm: &VirtualMachine) -> PyObjectRef {
     }
 }
 
-#[cfg(unix)]
+#[cfg(all(unix, not(target_os = "redox")))]
 fn os_getsid(pid: PyIntRef, vm: &VirtualMachine) -> PyObjectRef {
     let pid = pid.as_bigint().to_u32().unwrap();
 
@@ -815,7 +815,7 @@ fn os_setgid(gid: PyIntRef, vm: &VirtualMachine) -> PyResult<()> {
     unistd::setgid(Gid::from_raw(gid)).map_err(|err| convert_nix_error(vm, err))
 }
 
-#[cfg(unix)]
+#[cfg(all(unix, not(target_os = "redox")))]
 fn os_setegid(egid: PyIntRef, vm: &VirtualMachine) -> PyResult<()> {
     let egid = egid.as_bigint().to_u32().unwrap();
 
@@ -831,7 +831,7 @@ fn os_setpgid(pid: PyIntRef, pgid: PyIntRef, vm: &VirtualMachine) -> PyResult<()
         .map_err(|err| convert_nix_error(vm, err))
 }
 
-#[cfg(unix)]
+#[cfg(all(unix, not(target_os = "redox")))]
 fn os_setsid(vm: &VirtualMachine) -> PyResult<()> {
     unistd::setsid()
         .map(|_ok| ())
@@ -845,7 +845,7 @@ fn os_setuid(uid: PyIntRef, vm: &VirtualMachine) -> PyResult<()> {
     unistd::setuid(Uid::from_raw(uid)).map_err(|err| convert_nix_error(vm, err))
 }
 
-#[cfg(unix)]
+#[cfg(all(unix, not(target_os = "redox")))]
 fn os_seteuid(euid: PyIntRef, vm: &VirtualMachine) -> PyResult<()> {
     let euid = euid.as_bigint().to_u32().unwrap();
 
@@ -1029,14 +1029,18 @@ fn extend_module_platform_specific(vm: &VirtualMachine, module: PyObjectRef) ->
         "getgid" => ctx.new_rustfunc(os_getgid),
         "getegid" => ctx.new_rustfunc(os_getegid),
         "getpgid" => ctx.new_rustfunc(os_getpgid),
-        "getsid" => ctx.new_rustfunc(os_getsid),
         "getuid" => ctx.new_rustfunc(os_getuid),
         "geteuid" => ctx.new_rustfunc(os_geteuid),
         "setgid" => ctx.new_rustfunc(os_setgid),
-        "setegid" => ctx.new_rustfunc(os_setegid),
         "setpgid" => ctx.new_rustfunc(os_setpgid),
-        "setsid" => ctx.new_rustfunc(os_setsid),
         "setuid" => ctx.new_rustfunc(os_setuid),
+    });
+
+    #[cfg(not(target_os = "redox"))]
+    extend_module!(vm, module, {
+        "getsid" => ctx.new_rustfunc(os_getsid),
+        "setsid" => ctx.new_rustfunc(os_setsid),
+        "setegid" => ctx.new_rustfunc(os_setegid),
         "seteuid" => ctx.new_rustfunc(os_seteuid),
         "openpty" => ctx.new_rustfunc(os_openpty),
     });