i3status-rust: Add manpage to output (#439523)

pkgs/by-name/i3/i3status-rust/package.nix

@@ -4,6 +4,7 @@
   fetchFromGitHub,
   pkg-config,
   makeWrapper,
+  installShellFiles,
   dbus,
   libpulseaudio,
   notmuch,
@@ -12,6 +13,7 @@
   lm_sensors,
   iw,
   iproute2,
+  pandoc,
   pipewire,
   withICUCalendar ? false,
   withPipewire ? true,
@@ -34,6 +36,8 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [
     pkg-config
     makeWrapper
+    installShellFiles
+    pandoc
   ]
   ++ (lib.optionals withPipewire [ rustPlatform.bindgenHook ]);
 
@@ -59,9 +63,14 @@ rustPlatform.buildRustPackage rec {
       --replace "/usr/share/i3status-rust" "$out/share"
   '';
 
+  postBuild = ''
+    cargo xtask generate-manpage
+  '';
+
   postInstall = ''
     mkdir -p $out/share
     cp -R examples files/* $out/share
+    installManPage man/*
   '';
 
   postFixup = ''