sparsehash: modernize

Signed-off-by: Ethan Carter Edwards <ethan@ethancedwards.com>

pkgs/by-name/sp/sparsehash/package.nix

@@ -2,17 +2,21 @@
   lib,
   stdenv,
   fetchFromGitHub,
+  testers,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "sparsehash";
   version = "2.0.4";
 
+  strictDeps = true;
+  __structuredAttrs = true;
+
   src = fetchFromGitHub {
     owner = "sparsehash";
     repo = "sparsehash";
-    rev = "sparsehash-${finalAttrs.version}";
-    sha256 = "1pf1cjvcjdmb9cd6gcazz64x0cd2ndpwh6ql2hqpypjv725xwxy7";
+    tag = "sparsehash-${finalAttrs.version}";
+    hash = "sha256-x3feizhbXn8xFBQbyG+zojHQiflfsWcaS6s2ybZkwd0=";
   };
 
   # C++20 (default with GCC 16) removed many members of std::allocator. This
@@ -20,11 +24,18 @@ stdenv.mkDerivation (finalAttrs: {
   # https://github.com/sparsehash/sparsehash/pull/165
   patches = [ ./c++-20-std-allocator.patch ];
 
+  passthru.tests = {
+    pkg-config = testers.hasPkgConfigModules {
+      package = finalAttrs.finalPackage;
+    };
+  };
+
   meta = {
     homepage = "https://github.com/sparsehash/sparsehash";
     description = "Extremely memory-efficient hash_map implementation";
     platforms = lib.platforms.all;
     license = lib.licenses.bsd3;
+    pkgConfigModules = [ "libsparsehash" ];
     maintainers = with lib.maintainers; [ pSub ];
   };
 })