emacs.pkgs.plz: update description

pkgs/applications/editors/emacs/elisp-packages/plz/default.nix

@@ -2,21 +2,29 @@
 
 trivialBuild {
   pname = "plz";
-  version = "unstable-2021-08-22";
+  version = "0.pre+date=2021-08-22";
 
   src = fetchFromGitHub {
     owner = "alphapapa";
     repo = "plz.el";
     rev = "7e456638a651bab3a814e3ea81742dd917509cbb";
-    sha256 = "sha256-8kn9ax1AVF6f9iCTqvVeJZihs03pYAhLjUDooG/ubxY=";
+    hash = "sha256-8kn9ax1AVF6f9iCTqvVeJZihs03pYAhLjUDooG/ubxY=";
   };
 
   postPatch = ''
-    substituteInPlace ./plz.el --replace 'plz-curl-program "curl"' 'plz-curl-program "${curl}/bin/curl"'
+    substituteInPlace ./plz.el \
+      --replace 'plz-curl-program "curl"' 'plz-curl-program "${curl}/bin/curl"'
   '';
 
   meta = {
-    description = "plz is an HTTP library for Emacs";
+    description = "An HTTP library for Emacs";
+    longDescription = ''
+      plz is an HTTP library for Emacs. It uses curl as a backend, which avoids
+      some of the issues with using Emacs’s built-in url library. It supports
+      both synchronous and asynchronous requests. Its API is intended to be
+      simple, natural, and expressive. Its code is intended to be simple and
+      well-organized. Every feature is tested against httpbin.org.
+    '';
     license = lib.licenses.gpl3Only;
     platforms = lib.platforms.all;
   };