Updating from Go 1.17 to 1.18

[Pier-Hugues Pellerin <ph@heykimo.com>]

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Hello,

I am trying to update Go to 1.18, I do have a *working* patch that defines
a package that inherits from 1.17 and that adjusts the inputs. However, I
have a few questions:

1. Is inheriting the way to do that? The package's build system appears to
be the same from 1.17.
2. How can I rebuild dependents packages to ensure they are still building
correctly?
3. Anything I should look into or test more for these kinds of packages?

Thanks

-- 
ph,
http://heykimo.com

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diff --git a/gnu/packages/golang.scm b/gnu/packages/golang.scm
index f3cc1bd6b8..225331ab97 100644
--- a/gnu/packages/golang.scm
+++ b/gnu/packages/golang.scm
@@ -33,7 +33,7 @@
 ;;; Copyright © 2021 Chadwain Holness <chadwainholness@gmail.com>
 ;;; Copyright © 2021 Philip McGrath <philip@philipmcgrath.com>
 ;;; Copyright © 2021 Lu Hui <luhux76@gmail.com>
-;;; Copyright © 2022 Pier-Hugues Pellerin <phpellerin@gmail.com>
+;;; Copyright © 2022 Pier-Hugues Pellerin <ph@heykimo.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -838,7 +838,30 @@ (define-public go-1.17
        (alist-replace "go" (list go-1.16) (package-native-inputs go-1.16))
        (package-native-inputs go-1.16)))))
 
-(define-public go go-1.17)
+(define-public go-1.18
+  (package
+    (inherit go-1.17)
+    (name "go")
+    (version "1.18")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/golang/go")
+             (commit (string-append "go" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32
+         "1i4cn9p0viypnq3vn64zpi1rc8615cqhzay25hmy46n4r2mvhv3s"))))
+    (inputs (if (not (target-arm?))
+                (alist-delete "gcc:lib" (package-inputs go-1.17))
+                (package-inputs go-1.17)))
+    (native-inputs
+         (if (not (member (%current-system) (package-supported-systems go-1.4)))
+             (alist-replace "go" (list go-1.17) (package-native-inputs go-1.17))
+             (package-native-inputs go-1.17)))))
+
+(define-public go go-1.18)
 
 (define-public (make-go-std go)
   "Return a package which builds the standard library for Go compiler GO."