gnu: sendgmail: Rename package to match command.

Suggested by Ludo’ in <https://issues.guix.gnu.org/50420#3>.

* gnu/packages/golang.scm
(go-github-com-google-gmail-oauth2-tools-go-sendgmail): Move to ...
* gnu/packages/mail.scm (sendgmail): ... this variable.
Change `propagated-inputs` to `inputs`.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/golang.scm

@@ -31,6 +31,7 @@
 ;;; Copyright © 2021 jgart <jgart@dismail.de>
 ;;; Copyright © 2021 Bonface Munyoki Kilyungi <me@bonfacemunyoki.com>
 ;;; Copyright © 2021 Chadwain Holness <chadwainholness@gmail.com>
+;;; Copyright © 2021 Philip McGrath <philip@philipmcgrath.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -3036,41 +3037,6 @@ (define-public go-cloud-google-com-go-compute-metadata
 API service accounts for Go.")
     (license license:asl2.0)))
 
-(define-public go-github-com-google-gmail-oauth2-tools-go-sendgmail
-  (let ((commit "e3229155a4037267ce40f1a3a681f53221aa4d8d")
-        (revision "0"))
-    (package
-      (name "go-github-com-google-gmail-oauth2-tools-go-sendgmail")
-      (version (git-version "0.0.0" revision commit))
-      (source
-       (origin
-         (method git-fetch)
-         (uri (git-reference
-               (url "https://github.com/google/gmail-oauth2-tools")
-               (commit commit)))
-         (file-name (git-file-name name version))
-         (sha256
-          (base32
-           "1cxpkiaajhq1gjsg47r2b5xgck0r63pvkyrkm7af8c8dw7fyn64f"))))
-      (propagated-inputs
-       `(("go-golang-org-x-oauth2" ,go-golang-org-x-oauth2)
-         ("go-cloud-google-com-go-compute-metadata"
-          ,go-cloud-google-com-go-compute-metadata)))
-      (build-system go-build-system)
-      (arguments
-       '(#:unpack-path "github.com/google/gmail-oauth2-tools"
-         #:import-path "github.com/google/gmail-oauth2-tools/go/sendgmail"))
-      (home-page
-       "https://github.com/google/gmail-oauth2-tools/tree/master/go/sendgmail")
-      (synopsis
-       "Sendmail-compatible tool for using Gmail with @code{git send-email}")
-      (description
-       "The @command{sendgmail} command provides a minimal sendmail-compatible
-front-end that connects to Gmail using OAuth2.  It is specifically designed
-for use with @code{git send-email}.  The command needs a Gmail API key to
-function.")
-      (license license:asl2.0))))
-
 (define-public go-github-com-google-cadvisor
   (let ((commit "2ed7198f77395ee9a172878a0a7ab92ab59a2cfd")
         (revision "0"))

gnu/packages/mail.scm

@@ -43,6 +43,7 @@
 ;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
 ;;; Copyright © 2021 Benoit Joly <benoit@benoitj.ca>
 ;;; Copyright © 2021 Morgan Smith <Morgan.J.Smith@outlook.com>
+;;; Copyright © 2021 Philip McGrath <philip@philipmcgrath.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -4657,3 +4658,38 @@ (define-public rss2email
     ;; GPL version 2 or 3.  NOT 2+.
     (license (list license:gpl2
                    license:gpl3))))
+
+(define-public sendgmail
+  (let ((commit "e3229155a4037267ce40f1a3a681f53221aa4d8d")
+        (revision "0"))
+    (package
+      (name "sendgmail")
+      (version (git-version "0.0.0" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/google/gmail-oauth2-tools")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32
+           "1cxpkiaajhq1gjsg47r2b5xgck0r63pvkyrkm7af8c8dw7fyn64f"))))
+      (inputs
+       `(("go-golang-org-x-oauth2" ,go-golang-org-x-oauth2)
+         ("go-cloud-google-com-go-compute-metadata"
+          ,go-cloud-google-com-go-compute-metadata)))
+      (build-system go-build-system)
+      (arguments
+       '(#:unpack-path "github.com/google/gmail-oauth2-tools"
+         #:import-path "github.com/google/gmail-oauth2-tools/go/sendgmail"))
+      (home-page
+       "https://github.com/google/gmail-oauth2-tools/tree/master/go/sendgmail")
+      (synopsis
+       "Sendmail-compatible tool for using Gmail with @code{git send-email}")
+      (description
+       "The @command{sendgmail} command provides a minimal sendmail-compatible
+front-end that connects to Gmail using OAuth2.  It is specifically designed
+for use with @code{git send-email}.  The command needs a Gmail API key to
+function.")
+      (license license:asl2.0))))