gnu: Add emacs-pg.

* gnu/packages/emacs.scm (emacs-pg): New public variable.

gnu/packages/emacs.scm

@@ -7645,3 +7645,23 @@ (define-public emacs-evil-anzu
     (description "@code{anzu} provides a minor mode that displays the current
 match and total match information in the mode-line in various search modes.")
     (license license:gpl3+)))
+
+(define-public emacs-pg
+  (let ((commit "4f6516ec3946d95dcef49abb6703cc89ecb5183d"))
+    (package
+      (name "emacs-pg")
+      (version (git-version "0.1" "1" commit))
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference (url "https://github.com/cbbrowne/pg.el")
+                                    (commit commit)))
+                (file-name (git-file-name name version))
+                (sha256
+                 (base32
+                  "1zh7v4nnpzvbi8yj1ynlqlawk5bmlxi6s80b5f2y7hkdqb5q26k0"))))
+      (build-system emacs-build-system)
+      (home-page "https://github.com/cbbrowne/pg.el")
+      (synopsis "Emacs Lisp interface for PostgreSQL")
+      (description
+       "This package provides an Emacs Lisp interface for PostgreSQL.")
+      (license license:gpl3+))))