1 files changed, 65 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/tools/godot/3/mono/default.nix b/nixpkgs/pkgs/development/tools/godot/3/mono/default.nix
new file mode 100644
index 000000000000..22e95fb0e51a
--- /dev/null
+++ b/nixpkgs/pkgs/development/tools/godot/3/mono/default.nix
@@ -0,0 +1,65 @@
+{ godot3
+, callPackage
+, mkNugetDeps
+, mkNugetSource
+, mono
+, dotnet-sdk
+, writeText
+}:
+
+godot3.overrideAttrs (self: base: {
+  pname = "godot3-mono";
+
+  godotBuildDescription = "mono build";
+
+  nativeBuildInputs = base.nativeBuildInputs ++ [ mono dotnet-sdk ];
+
+  glue = callPackage ./glue.nix {};
+
+  nugetDeps = mkNugetDeps { name = "deps"; nugetDeps = import ./deps.nix; };
+
+  nugetSource =
+    mkNugetSource {
+      name = "${self.pname}-nuget-source";
+      description = "A Nuget source with dependencies for ${self.pname}";
+      deps = [ self.nugetDeps ];
+    };
+
+  nugetConfig = writeText "NuGet.Config" ''
+    <?xml version="1.0" encoding="utf-8"?>
+    <configuration>
+      <packageSources>
+        <add key="${self.pname}-deps" value="${self.nugetSource}/lib" />
+      </packageSources>
+    </configuration>
+  '';
+
+  sconsFlags = base.sconsFlags ++ [
+    "module_mono_enabled=true"
+    "mono_prefix=${mono}"
+  ];
+
+  shouldConfigureNuget = true;
+
+  postConfigure = ''
+    echo "Setting up buildhome."
+    mkdir buildhome
+    export HOME="$PWD"/buildhome
+
+    echo "Overlaying godot glue."
+    cp -R --no-preserve=mode "$glue"/. .
+
+    if [ -n "$shouldConfigureNuget" ]; then
+      echo "Configuring NuGet."
+      mkdir -p ~/.nuget/NuGet
+      ln -s "$nugetConfig" ~/.nuget/NuGet/NuGet.Config
+    fi
+  '';
+
+  installedGodotShortcutFileName = "org.godotengine.GodotMono3.desktop";
+  installedGodotShortcutDisplayName = "Godot Engine (Mono) 3";
+
+  passthru = {
+    make-deps = callPackage ./make-deps.nix {};
+  };
+})