manual: update meta-attributes section

Promote the `maintainers = with maintainers; [ ]` syntax as that is most common
in nixpkgs, and remove the `nix-env` example which doesn't work like that anymore.

1 files changed, 2 insertions, 48 deletions

diff --git a/doc/stdenv/meta.chapter.md b/doc/stdenv/meta.chapter.md
index f4d8ed2919dd..46114dacb458 100644
--- a/doc/stdenv/meta.chapter.md
+++ b/doc/stdenv/meta.chapter.md
@@ -11,58 +11,12 @@ meta = with lib; {
   '';
   homepage = "https://www.gnu.org/software/hello/manual/";
   license = licenses.gpl3Plus;
-  maintainers = [ maintainers.eelco ];
+  maintainers = with maintainers; [ eelco ];
   platforms = platforms.all;
 };
 ```
 
-Meta-attributes are not passed to the builder of the package. Thus, a change to a meta-attribute doesn’t trigger a recompilation of the package. The value of a meta-attribute must be a string.
-
-The meta-attributes of a package can be queried from the command-line using `nix-env`:
-
-```ShellSession
-$ nix-env -qa hello --json
-{
-    "hello": {
-        "meta": {
-            "description": "A program that produces a familiar, friendly greeting",
-            "homepage": "https://www.gnu.org/software/hello/manual/",
-            "license": {
-                "fullName": "GNU General Public License version 3 or later",
-                "shortName": "GPLv3+",
-                "url": "http://www.fsf.org/licensing/licenses/gpl.html"
-            },
-            "longDescription": "GNU Hello is a program that prints \"Hello, world!\" when you run it.\nIt is fully customizable.\n",
-            "maintainers": [
-                "Ludovic Court\u00e8s <ludo@gnu.org>"
-            ],
-            "platforms": [
-                "i686-linux",
-                "x86_64-linux",
-                "armv5tel-linux",
-                "armv7l-linux",
-                "mips32-linux",
-                "x86_64-darwin",
-                "i686-cygwin",
-                "i686-freebsd13",
-                "x86_64-freebsd13",
-                "i686-openbsd",
-                "x86_64-openbsd"
-            ],
-            "position": "/home/user/dev/nixpkgs/pkgs/applications/misc/hello/default.nix:14"
-        },
-        "name": "hello-2.9",
-        "system": "x86_64-linux"
-    }
-}
-```
-
-`nix-env` knows about the `description` field specifically:
-
-```ShellSession
-$ nix-env -qa hello --description
-hello-2.3  A program that produces a familiar, friendly greeting
-```
+Meta-attributes are not passed to the builder of the package. Thus, a change to a meta-attribute doesn’t trigger a recompilation of the package.
 
 ## Standard meta-attributes {#sec-standard-meta-attributes}