immer: 0.8.1 -> 0.9.1, add passthru.tests

pkgs/by-name/im/immer/package.nix

@@ -1,44 +1,62 @@
 {
   lib,
   stdenv,
-  catch2,
+  catch2_3,
   fetchFromGitHub,
   cmake,
+  boehmgc,
+  boost,
+  fmt,
   nix-update-script,
 }:
-
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "immer";
-  version = "0.8.1";
+
+  version = "0.9.1";
 
   src = fetchFromGitHub {
     owner = "arximboldi";
     repo = "immer";
-    tag = "v${version}";
-    hash = "sha256-Tyj2mNyLhrcFNQEn4xHC8Gz7/jtA4Dnkjtk8AAXJEw8=";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-Qrr5mDbPF9cbLi9T2IVAKPN3CkTxffoivvqGNGLdkxE=";
   };
 
-  nativeBuildInputs = [
-    cmake
-  ];
+  nativeBuildInputs = [ cmake ];
 
-  buildInputs = [
-    catch2
-  ];
+  cmakeFlags = [ (lib.cmakeBool "immer_BUILD_TESTS" finalAttrs.finalPackage.doCheck) ];
+
+  # immer is a header only library
+  dontBuild = true;
+  buildInputs = [ ];
+  dontUseCmakeBuildDir = true;
+
+  doCheck = false;
 
   strictDeps = true;
 
-  dontBuild = true;
-  dontUseCmakeBuildDir = true;
-
-  passthru.updateScript = nix-update-script { };
+  passthru = {
+    tests.test = finalAttrs.finalPackage.overrideAttrs (attrs: {
+      pname = "${attrs.pname}-test";
+      doCheck = true;
+      checkInputs = [
+        catch2_3
+        boehmgc
+        boost
+        fmt
+      ];
+      checkPhase = ''
+        make check
+      '';
+    });
+    updateScript = nix-update-script { };
+  };
 
   meta = {
     description = "Postmodern immutable and persistent data structures for C++ — value semantics at scale";
     homepage = "https://sinusoid.es/immer";
-    changelog = "https://github.com/arximboldi/immer/releases/tag/v${version}";
+    changelog = "https://github.com/arximboldi/immer/releases/tag/v${finalAttrs.version}";
     license = lib.licenses.boost;
     maintainers = with lib.maintainers; [ sifmelcara ];
     platforms = lib.platforms.all;
   };
-}
+})