Add test for cross compilation of gi-gtk

It looks like this will need #2232

Author: hamishmack

overlays/musl.nix

@@ -41,6 +41,15 @@ final: prev: prev.lib.optionalAttrs prev.stdenv.hostPlatform.isMusl ({
 
   openssl = prev.openssl.override { static = true; };
 
+  # Cups and tracker pull in systemd
+  gtk4 = (prev.gtk4.override {
+    cupsSupport = false;
+    trackerSupport = false;
+    gst_all_1 = { gst-plugins-bad = null; gst-plugins-base = null; };
+  }).overrideAttrs (oldAttrs: {
+    mesonFlags = oldAttrs.mesonFlags ++ [ "-Dmedia-gstreamer=disabled" ];
+  });
+
   icu = (prev.icu.overrideAttrs (old: { configureFlags = old.configureFlags ++ [ "--enable-static" "--disable-shared" ]; }));
 
   # Fails on cross compile

test/default.nix

@@ -233,6 +233,7 @@ let
     plugin = callTest ./plugin {};
     supported-languages = callTest ./supported-langauges {};
     js-template-haskell = callTest ./js-template-haskell {};
+    gi-gtk = callTest ./gi-gtk { inherit util; };
     unit = unitTests;
   };
 

test/gi-gtk/default.nix

@@ -0,0 +1,26 @@
+# Test building TH code that needs DLLs when cross compiling for windows
+{ stdenv, lib, util, project', haskellLib, recurseIntoAttrs, testSrc, compiler-nix-name, evalPackages, buildPackages }:
+
+with lib;
+
+let
+  project = project' {
+    inherit compiler-nix-name evalPackages;
+    src = testSrc "gi-gtk";
+    cabalProjectLocal = builtins.readFile ../cabal.project.local;
+  };
+
+  packages = project.hsPkgs;
+
+in recurseIntoAttrs rec {
+  meta.disabled = stdenv.hostPlatform.isGhcjs;
+
+  ifdInputs = {
+    inherit (project) plan-nix;
+  };
+
+  build = packages.test-gi-gtk.components.exes.test-gi-gtk;
+  check = haskellLib.check build;
+  build-profiled = packages.test-gi-gtk.components.exes.test-gi-gtk.profiled;
+  check-profiled = haskellLib.check build-profiled;
+}

test/gi-gtk/src/Main.hs

@@ -0,0 +1,9 @@
+module Main where
+
+import qualified GI.Gtk as Gtk (initCheck)
+
+main :: IO ()
+main = do
+  Gtk.initCheck
+  return ()
+

test/gi-gtk/test-gi-gtk.cabal

@@ -0,0 +1,14 @@
+cabal-version:       >=1.10
+name:                test-gi-gtk
+version:             0.1.0.0
+license:             PublicDomain
+author:              Hamish Mackenzie
+maintainer:          [email protected]
+build-type:          Simple
+
+executable test-gi-gtk
+  build-depends:       base
+                     , gi-gtk
+  main-is:             Main.hs
+  hs-source-dirs:      src
+  default-language:    Haskell2010