From 095f1d063a91f3e9edae6a5860f34eb95ff7a933 Mon Sep 17 00:00:00 2001
From: Nikolaos Karaolidis <nick@karaolidis.com>
Date: Sat, 26 Jul 2025 15:29:16 +0100
Subject: [PATCH] Add proton-launch

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>
---
 .../configs/user/gui/gaming/proton/default.nix  | 17 +++++++++++++++++
 .../user/gui/gaming/proton/proton-launch.sh     | 15 +++++++++++++++
 hosts/himalia/users/nick/default.nix            |  1 +
 3 files changed, 33 insertions(+)
 create mode 100644 hosts/common/configs/user/gui/gaming/proton/default.nix
 create mode 100644 hosts/common/configs/user/gui/gaming/proton/proton-launch.sh

diff --git a/hosts/common/configs/user/gui/gaming/proton/default.nix b/hosts/common/configs/user/gui/gaming/proton/default.nix
new file mode 100644
index 0000000..93c3ccd
--- /dev/null
+++ b/hosts/common/configs/user/gui/gaming/proton/default.nix
@@ -0,0 +1,17 @@
+{ user, home }:
+{ lib, pkgs, ... }:
+{
+  environment.persistence."/persist/state"."${home}/.local/share/proton" = { };
+
+  home-manager.users.${user}.home.packages = [
+    (pkgs.writeShellApplication {
+      name = "proton-launch";
+      runtimeInputs = with pkgs; [ coreutils ];
+      runtimeEnv = {
+        PROTON = lib.makeSearchPathOutput "steamcompattool" "" [ pkgs.proton-ge-bin ];
+        STEAM_RUN = lib.meta.getExe pkgs.steam-run;
+      };
+      text = builtins.readFile ./proton-launch.sh;
+    })
+  ];
+}
diff --git a/hosts/common/configs/user/gui/gaming/proton/proton-launch.sh b/hosts/common/configs/user/gui/gaming/proton/proton-launch.sh
new file mode 100644
index 0000000..3779ddc
--- /dev/null
+++ b/hosts/common/configs/user/gui/gaming/proton/proton-launch.sh
@@ -0,0 +1,15 @@
+if [ "$#" -lt 1 ]; then
+  echo "Usage: $0 <executable-path> [args...]"
+  exit 1
+fi
+
+PROTON_DATA="$HOME/.local/share/proton"
+
+exec="$(realpath "$1")"
+name="$(basename "$exec")"
+mkdir -p "$PROTON_DATA/$name"
+
+export STEAM_COMPAT_DATA_PATH="$PROTON_DATA/$name"
+export STEAM_COMPAT_CLIENT_INSTALL_PATH="$PROTON"
+
+"$STEAM_RUN" "$PROTON/proton" run "$exec" "${@:2}" >/dev/null 2>&1 & disown
diff --git a/hosts/himalia/users/nick/default.nix b/hosts/himalia/users/nick/default.nix
index 34573a7..0a4076a 100644
--- a/hosts/himalia/users/nick/default.nix
+++ b/hosts/himalia/users/nick/default.nix
@@ -66,6 +66,7 @@ in
     (import ../../../common/configs/user/gui/gaming/gamescope { inherit user home; })
     (import ../../../common/configs/user/gui/gaming/steam { inherit user home; })
     (import ../../../common/configs/user/gui/gaming/prismlauncher { inherit user home; })
+    (import ../../../common/configs/user/gui/gaming/proton { inherit user home; })
     (import ../../../common/configs/user/gui/gaming/wivrn { inherit user home; })
     (import ../../../common/configs/user/gui/gtk { inherit user home; })
     (import ../../../common/configs/user/gui/hyprland { inherit user home; })