home-manager: add minor improvements

- add `jq` dependency, following upstream
- use `--cmd` with `installShellCompletion`
- remove unnecessary `placeholder`s
- add myself @bryango to maintainers

See: https://github.com/nix-community/home-manager/blob/master/home-manager/default.nix

pkgs/by-name/ho/home-manager/package.nix

@@ -5,7 +5,9 @@
 , findutils
 , gettext
 , gnused
+, inetutils
 , installShellFiles
+, jq
 , less
 , ncurses
 , nixos-option
@@ -40,9 +42,10 @@ stdenvNoCC.mkDerivation (finalAttrs: {
     install -D -m755 home-manager/home-manager $out/bin/home-manager
     install -D -m755 lib/bash/home-manager.sh $out/share/bash/home-manager.sh
 
-    installShellCompletion --bash --name home-manager.bash home-manager/completion.bash
-    installShellCompletion --fish --name home-manager.fish home-manager/completion.fish
-    installShellCompletion --zsh --name _home-manager home-manager/completion.zsh
+    installShellCompletion --cmd home-manager \
+      --bash home-manager/completion.bash \
+      --fish home-manager/completion.fish \
+      --zsh home-manager/completion.zsh
 
     for pofile in home-manager/po/*.po; do
       lang="''${pofile##*/}"
@@ -63,15 +66,16 @@ stdenvNoCC.mkDerivation (finalAttrs: {
           findutils
           gettext
           gnused
+          jq
           less
           ncurses
           nixos-option
           inetutils # for `hostname`
         ]
       }" \
-      --subst-var-by HOME_MANAGER_LIB '${placeholder "out"}/share/bash/home-manager.sh' \
+      --subst-var-by HOME_MANAGER_LIB "$out/share/bash/home-manager.sh" \
       --subst-var-by HOME_MANAGER_PATH "${finalAttrs.src}" \
-      --subst-var-by OUT '${placeholder "out"}'
+      --subst-var-by OUT "$out"
   '';
 
   passthru.updateScript = unstableGitUpdater {
@@ -89,7 +93,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
     '';
     license = lib.licenses.mit;
     mainProgram = "home-manager";
-    maintainers = with lib.maintainers; [ AndersonTorres ];
+    maintainers = with lib.maintainers; [ AndersonTorres bryango ];
     platforms = lib.platforms.unix;
   };
 })