From b580ef27396c6e515777ea2e7e9826ce892b7b9c Mon Sep 17 00:00:00 2001
From: TomaSajt <62384384+TomaSajt@users.noreply.github.com>
Date: Fri, 8 Aug 2025 13:39:04 +0200
Subject: [PATCH] mesen: don't use absolute path for Exec in generated .desktop
 files

---
 .../me/mesen/desktop-make-non-absolute-exec.patch   | 13 +++++++++++++
 pkgs/by-name/me/mesen/package.nix                   |  2 ++
 2 files changed, 15 insertions(+)
 create mode 100644 pkgs/by-name/me/mesen/desktop-make-non-absolute-exec.patch

diff --git a/pkgs/by-name/me/mesen/desktop-make-non-absolute-exec.patch b/pkgs/by-name/me/mesen/desktop-make-non-absolute-exec.patch
new file mode 100644
index 000000000000..e8c78d46e994
--- /dev/null
+++ b/pkgs/by-name/me/mesen/desktop-make-non-absolute-exec.patch
@@ -0,0 +1,13 @@
+diff --git a/UI/Config/FileAssociationHelper.cs b/UI/Config/FileAssociationHelper.cs
+index bcd40ce..4965c7a 100644
+--- a/UI/Config/FileAssociationHelper.cs
++++ b/UI/Config/FileAssociationHelper.cs
+@@ -152,7 +152,7 @@ namespace Mesen.Config
+ 				"Comment=Emulator" + Environment.NewLine +
+ 				"Keywords=game;emulator;emu" + Environment.NewLine +
+ 				"Categories=GNOME;GTK;Game;Emulator;" + Environment.NewLine +
+-				"Exec=" + mainModule.FileName + " %f" + Environment.NewLine +
++				"Exec=" + "Mesen" + " %f" + Environment.NewLine +
+ 				"NoDisplay=false" + Environment.NewLine +
+ 				"StartupNotify=true" + Environment.NewLine +
+ 				"Icon=MesenIcon" + Environment.NewLine;
diff --git a/pkgs/by-name/me/mesen/package.nix b/pkgs/by-name/me/mesen/package.nix
index cb7bca0d47c1..0fc87dc8ce19 100644
--- a/pkgs/by-name/me/mesen/package.nix
+++ b/pkgs/by-name/me/mesen/package.nix
@@ -26,6 +26,8 @@ buildDotnetModule rec {
     ./dont-use-nightly-avalonia.patch
     # upstream has a weird library loading mechanism, which we override with a more sane alternative
     ./dont-zip-libraries.patch
+    # without this the generated .desktop file uses an absolute (and incorrect) path for the binary
+    ./desktop-make-non-absolute-exec.patch
   ];
 
   dotnet-sdk = dotnetCorePackages.sdk_8_0;