From d7b8a4e44601121e0773f2aed2406fc231cc8f59 Mon Sep 17 00:00:00 2001
From: Hraban Luyat <hraban@0brg.net>
Date: Mon, 3 Apr 2023 04:44:03 +0100
Subject: [PATCH] UTM: fix meta.mainProgram field

Fixes `nix run nixpkgs#utm`
---
 pkgs/os-specific/darwin/utm/default.nix | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/pkgs/os-specific/darwin/utm/default.nix b/pkgs/os-specific/darwin/utm/default.nix
index 2e21945288e4..6428b60033f1 100644
--- a/pkgs/os-specific/darwin/utm/default.nix
+++ b/pkgs/os-specific/darwin/utm/default.nix
@@ -16,8 +16,11 @@ stdenvNoCC.mkDerivation rec {
   nativeBuildInputs = [ undmg ];
 
   sourceRoot = ".";
+  # Create bin/ directory just so we can escape it from the mainProgram. nix run
+  # xxx hard-codes /bin/ as a prefix to the binary path, so going to a parent
+  # using .. requires the /bin/ directory to exist, even if empty.
   installPhase = ''
-    mkdir -p $out/Applications
+    mkdir -p $out/Applications $out/bin
     cp -r *.app $out/Applications
   '';
 
@@ -46,7 +49,7 @@ stdenvNoCC.mkDerivation rec {
     '';
     homepage = "https://mac.getutm.app/";
     changelog = "https://github.com/utmapp/${pname}/releases/tag/v${version}";
-    mainProgram = "UTM";
+    mainProgram = "../Applications/UTM.app/Contents/MacOS/UTM";
     license = licenses.apsl20;
     platforms = platforms.darwin; # 11.3 is the minimum supported version as of UTM 4.
     sourceProvenance = with sourceTypes; [ binaryNativeCode ];