nixosTests.man: test man-pages package

nixos/tests/man.nix

@@ -88,6 +88,8 @@ in
       ${machine}.succeed("man 3 libunwind > /dev/null")
       # NixOS configuration man page is installed
       ${machine}.succeed("man configuration.nix > /dev/null")
+      # Linux `man-pages` work
+      ${machine}.succeed("man 5 proc_vmstat > /dev/null")
 
     with subtest("Test generateCaches via man -k in ${machine}"):
       expected = [
@@ -97,6 +99,7 @@ in
         ("user", "userdel", 8),
         ("mem", "free", 3),
         ("mem", "free", 1),
+        ("statistics", "proc_vmstat", 5),
       ]
 
       for (keyword, page, section) in expected:

pkgs/by-name/ma/man-pages/package.nix

@@ -6,6 +6,7 @@
   gawk,
   man,
   pcre2,
+  nixosTests,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -65,8 +66,11 @@ stdenv.mkDerivation (finalAttrs: {
     runHook postInstallCheck
   '';
 
-  passthru.updateScript = directoryListingUpdater {
-    url = "https://www.kernel.org/pub/linux/docs/man-pages/";
+  passthru = {
+    tests = { inherit (nixosTests) man; };
+    updateScript = directoryListingUpdater {
+      url = "https://www.kernel.org/pub/linux/docs/man-pages/";
+    };
   };
 
   meta = {