tomlplusplus: build example programs

Signed-off-by: Sefa Eyeoglu <contact@scrumplex.net>

pkgs/development/libraries/tomlplusplus/default.nix

@@ -1,6 +1,7 @@
 {
   cmake,
   fetchFromGitHub,
+  fetchpatch2,
   glibcLocales,
   lib,
   meson,
@@ -22,6 +23,15 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-h5tbO0Rv2tZezY58yUbyRVpsfRjY3i+5TPkkxr6La8M=";
   };
 
+  patches = [
+    # https://github.com/marzer/tomlplusplus/pull/233
+    (fetchpatch2 {
+      name = "tomlplusplus-install-example-programs.patch";
+      url = "https://github.com/marzer/tomlplusplus/commit/8128eb632325d1820f4d17dd8250dcda6ab07743.patch";
+      hash = "sha256-7m2P+e1/OASHrzm9LSy6RnayS/kGxFC82xOyGBGXeG0=";
+    })
+  ];
+
   nativeBuildInputs = [
     meson
     cmake
@@ -34,7 +44,10 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   doCheck = true;
-  mesonFlags = [ "-Dbuild_tests=${lib.boolToString finalAttrs.doCheck}" ];
+  mesonFlags = [
+    "-Dbuild_tests=${lib.boolToString finalAttrs.doCheck}"
+    "-Dbuild_examples=true"
+  ];
 
   passthru = {
     updateScript = nix-update-script { };