diff --git a/chkplat.sh b/chkplat.sh
new file mode 100755
index 0000000..66d8201
--- /dev/null
+++ b/chkplat.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# go tool dist list for all valid GOOS/GOARCH targets.
+
+for tgt in $(go tool dist list);
+do
+	o="$(echo ${tgt} | cut -f1 -d '/')"
+	a="$(echo ${tgt} | cut -f2 -d '/')"
+	out="$(env GOOS=${o} GOARCH=${a} go build ./... 2>&1)"
+	ret=${?}
+	if [ $ret -ne 0 ];
+	then
+		echo "OS:   ${o}"
+		echo "ARCH: ${a}"
+		echo "${out}"
+		echo
+		echo
+	fi
+done
diff --git a/funcs_nix.go b/funcs_nix.go
index 73d34fd..aca5f50 100644
--- a/funcs_nix.go
+++ b/funcs_nix.go
@@ -19,9 +19,9 @@ func GetIDState() (ids IDState) {
 
 	var err error
 
-	ids.RUID, ids.EUID, ids.SUID = unix.Getresuid()
+	ids.RUID, ids.EUID, ids.SUID = getresuid()
 	ids.uidsChecked = true
-	ids.RGID, ids.EGID, ids.SGID = unix.Getresgid()
+	ids.RGID, ids.EGID, ids.SGID = getresgid()
 	ids.gidsChecked = true
 
 	ids.SudoEnvCmd = envs.HasEnv(envSudoCmd)
@@ -59,7 +59,7 @@ func GetIDState() (ids IDState) {
 func GetIDStateProc(pid uint32) (ids IDState, err error) {
 
 	var i32 int32
-	var ints []int32
+	var ints []uint32
 	var sudoUid bool
 	var sudoUname bool
 	var proc *process.Process
diff --git a/funcs_nix_noresuid.go b/funcs_nix_noresuid.go
new file mode 100644
index 0000000..ad40774
--- /dev/null
+++ b/funcs_nix_noresuid.go
@@ -0,0 +1,31 @@
+//go:build !(windows || plan9 || wasip1 || js || ios) && (aix || darwin || dragonfly || freebsd || illumos || netbsd || solaris)
+
+package sysutils
+
+import (
+	`golang.org/x/sys/unix`
+)
+
+// getresgid spoofs unix.Getresgid, as this file targets platforms that do not support it.
+func getresgid() (rgid, egid, sgid int) {
+
+	// rgid, egid, sgid = unix.Getresgid()
+
+	rgid = unix.Getgid()
+	egid = unix.Getegid()
+	sgid = -1
+
+	return
+}
+
+// getresuid spoofs unix.Getresuid, as this file targets platforms that do not support it.
+func getresuid() (ruid, euid, suid int) {
+
+	// ruid, euid, suid = unix.Getresuid()
+
+	ruid = unix.Getuid()
+	euid = unix.Geteuid()
+	suid = -1
+
+	return
+}
diff --git a/funcs_nix_resuid.go b/funcs_nix_resuid.go
new file mode 100644
index 0000000..2294f54
--- /dev/null
+++ b/funcs_nix_resuid.go
@@ -0,0 +1,23 @@
+//go:build !(windows || plan9 || wasip1 || js || ios) && !(aix || darwin || dragonfly || freebsd || illumos || netbsd || solaris)
+
+package sysutils
+
+import (
+	`golang.org/x/sys/unix`
+)
+
+// getresgid wraps unix.Getresgid, as this file targets platforms that fully support it.
+func getresgid() (rgid, egid, sgid int) {
+
+	rgid, egid, sgid = unix.Getresgid()
+
+	return
+}
+
+// getresuid wraps unix.Getresuid, as this file targets platforms that fully support it.
+func getresuid() (ruid, euid, suid int) {
+
+	ruid, euid, suid = unix.Getresuid()
+
+	return
+}
diff --git a/go.mod b/go.mod
index 569a984..985d27f 100644
--- a/go.mod
+++ b/go.mod
@@ -10,7 +10,7 @@ require (
 	golang.org/x/sync v0.19.0
 	golang.org/x/sys v0.40.0
 	honnef.co/go/augeas v0.0.0-20161110001225-ca62e35ed6b8
-	r00t2.io/goutils v1.16.3
+	r00t2.io/goutils v1.16.4
 )
 
 require (
diff --git a/go.sum b/go.sum
index 466cf5a..7822b9b 100644
--- a/go.sum
+++ b/go.sum
@@ -39,5 +39,5 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/augeas v0.0.0-20161110001225-ca62e35ed6b8 h1:FW42yWB1sGClqswyHIB68wo0+oPrav1IuQ+Tdy8Qp8E=
 honnef.co/go/augeas v0.0.0-20161110001225-ca62e35ed6b8/go.mod h1:44w9OfBSQ9l3o59rc2w3AnABtE44bmtNnRMNC7z+oKE=
-r00t2.io/goutils v1.16.2 h1:aJtAD+t1pCaM9cpO1o1S7UDDh7fxBPT7CTYuGHJsVVo=
-r00t2.io/goutils v1.16.2/go.mod h1:h+XtmWIvgm5S/liSJYFw3N09r5J7cjZ+Z5+aoYGw67k=
+r00t2.io/goutils v1.16.4 h1:pzF2JcejcbIBeCpvE2yVwXfIlUs0yL2TKMB8sBl1xJc=
+r00t2.io/goutils v1.16.4/go.mod h1:57B9wDCUgR5+sE02Nwk9DHG76Sgrt9EinCY10SSw6ac=
diff --git a/types_nix.go b/types_nix.go
index b26f6a5..da22af9 100644
--- a/types_nix.go
+++ b/types_nix.go
@@ -11,7 +11,16 @@ IDState collects information about the current running process.
 It should only be used as returned from GetIDState().
 Its methods WILL return false information if any of these values are altered.
 
-FSUID/FSGID are not supported.
+FSUID/FSGID are not currently supported.
+
+Currently, macOS (and FreeBSD, and a couple others) will not populate:
+
+	* SUID
+	* SGID
+
+due to Apple in their "infinite wisdom" allowing you to *set* these
+but exposing no direct syscall whatsoever to *retrieve* them.
+Enjoy your crippled OS, fanboys.
 */
 type IDState struct {
 	// RUID: Real UID