diff --git a/README.md b/README.md
index cd695f6..ca00c93 100644
--- a/README.md
+++ b/README.md
@@ -251,6 +251,14 @@ $ docker run -it --rm go-python/gopy
 To know what features are supported on what backends, please refer to the
 [Support matrix ](https://github.com/go-python/gopy/blob/master/SUPPORT_MATRIX.md).
 
+## setup.py
+
+Here's an example for how to use `setup.py` with gopy to make an installable package: 
+https://github.com/natun-ai/labsdk/blob/master/setup.py
+
+Also, see this for cross-platform build:
+https://github.com/natun-ai/labsdk/blob/master/.github/workflows/wheels.yaml
+
 ## Troubleshooting
 
 ### python version mismatches
diff --git a/SUPPORT_MATRIX.md b/SUPPORT_MATRIX.md
index 5e473e0..f23c8f6 100644
--- a/SUPPORT_MATRIX.md
+++ b/SUPPORT_MATRIX.md
@@ -29,4 +29,5 @@ _examples/sliceptr | yes | yes
 _examples/slices | yes | yes
 _examples/structs | yes | yes
 _examples/unicode | no | yes
+_examples/variadic | no | yes
 _examples/vars | yes | yes
diff --git a/_examples/cpkg/run.go b/_examples/cpkg/run.go
index 85bd647..f95d10c 100644
--- a/_examples/cpkg/run.go
+++ b/_examples/cpkg/run.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build ignore
 // +build ignore
 
 package main
diff --git a/_examples/variadic/variadic.go b/_examples/variadic/variadic.go
index dce6447..113ddf4 100644
--- a/_examples/variadic/variadic.go
+++ b/_examples/variadic/variadic.go
@@ -1,7 +1,11 @@
+// Copyright 2022 The go-python Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package variadic
 
 /////////////// Non Variadic //////////////
-func NonVariFunc(arg1 int, arg2 []int, arg3 int) int{
+func NonVariFunc(arg1 int, arg2 []int, arg3 int) int {
 	total := arg1
 	for _, num := range arg2 {
 		total += num
@@ -12,7 +16,7 @@ func NonVariFunc(arg1 int, arg2 []int, arg3 int) int{
 }
 
 /////////////// Variadic Over Int //////////////
-func VariFunc(vargs ...int) int{
+func VariFunc(vargs ...int) int {
 	total := 0
 	for _, num := range vargs {
 		total += num
@@ -26,15 +30,15 @@ type IntStrUct struct {
 }
 
 func NewIntStrUct(n int) IntStrUct {
-	return IntStrUct {
-		p:n,
+	return IntStrUct{
+		p: n,
 	}
-} 
+}
 
-func VariStructFunc(vargs ...IntStrUct) int{
+func VariStructFunc(vargs ...IntStrUct) int {
 	total := 0
 	for _, inst := range vargs {
-		total += inst.p 
+		total += inst.p
 	}
 	return total
 }
@@ -48,7 +52,7 @@ func (is *IntStrUct) Number() int {
 	return is.p
 }
 
-func VariInterFaceFunc(vargs ...IntInterFace) int{
+func VariInterFaceFunc(vargs ...IntInterFace) int {
 	total := 0
 	for _, inst := range vargs {
 		total += inst.Number()
diff --git a/bind/gen_func.go b/bind/gen_func.go
index 991165f..adcffe1 100644
--- a/bind/gen_func.go
+++ b/bind/gen_func.go
@@ -100,7 +100,7 @@ func (g *pyGen) genFuncSig(sym *symbol, fsym *Func) bool {
 			}
 		}
 
-		if i!=nargs-1 || !fsym.isVariadic {
+		if i != nargs-1 || !fsym.isVariadic {
 			wpArgs = append(wpArgs, anm)
 		}
 	}
@@ -303,7 +303,7 @@ if __err != nil {
 		default:
 			na = anm
 		}
-		if i == len(args) - 1 && fsym.isVariadic {
+		if i == len(args)-1 && fsym.isVariadic {
 			na = na + "..."
 		}
 		callArgs = append(callArgs, na)
diff --git a/main_darwin.go b/main_darwin.go
index 8697476..5edc920 100644
--- a/main_darwin.go
+++ b/main_darwin.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build darwin
 // +build darwin
 
 package main
diff --git a/main_unix.go b/main_unix.go
index fcd1871..1acf66f 100644
--- a/main_unix.go
+++ b/main_unix.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build (linux && !android) || dragonfly || openbsd
 // +build linux,!android dragonfly openbsd
 
 package main
diff --git a/main_unix_test.go b/main_unix_test.go
index 8d0733a..0d709f7 100644
--- a/main_unix_test.go
+++ b/main_unix_test.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build !windows
 // +build !windows
 
 package main
diff --git a/main_windows_test.go b/main_windows_test.go
index 07aac46..037b33a 100644
--- a/main_windows_test.go
+++ b/main_windows_test.go
@@ -1,6 +1,7 @@
 // Copyright 2015 The go-python Authors.  All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
+
 //go:build windows
 // +build windows