fix: native runners detection in flatpak (#53)

* fix: native runners detection in flatpak

* use chdir for working directory

gogdl/launch.py

@@ -19,15 +19,24 @@ def get_flatpak_command(id: str) -> list[str]:
     new_process_command = []
     process_command = ["flatpak", "info", id] 
     if os.path.exists("/.flatpak-info"):
-        spawn_test = subprocess.run(["flatpak-spawn", "--host" "ls"], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-        if spawn_test.returncode == 0:
-            new_process_command = ["flatpak-spawn", "--host"]
-            process_command = new_process_command + process_command
+        try:
+            spawn_test = subprocess.run(["flatpak-spawn", "--host", "ls"], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        except FileNotFoundError:
+            return []
+        if spawn_test.returncode != 0:
+            return []
 
-    output = subprocess.run(process_command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-
-    if output.returncode == 0:
-        return new_process_command + ["flatpak", "run", id]
+        new_process_command = ["flatpak-spawn", "--host"]
+        process_command = new_process_command + process_command
+
+    try:
+        output = subprocess.run(process_command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+
+        if output.returncode == 0:
+            return new_process_command + ["flatpak", "run", id]
+
+    except FileNotFoundError:
+        pass
     return []
 
 
@@ -76,7 +85,12 @@ def launch(arguments, unknown_args):
 
         if not os.path.exists(executable):
             executable = get_case_insensitive_name(executable)
+        # Handle case sensitive file systems
+        if not os.path.exists(working_dir):
+            working_dir = get_case_insensitive_name(working_dir)
 
+        os.chdir(working_dir)
+
         if sys.platform != "win32" and arguments.platform == 'windows' and not arguments.override_exe:
             if "scummvm.exe" in executable.lower():
                 flatpak_scummvm = get_flatpak_command("org.scummvm.ScummVM")
@@ -105,6 +119,8 @@ def launch(arguments, unknown_args):
         if arguments.override_exe:
             command.append(arguments.override_exe)
             working_dir = os.path.split(arguments.override_exe)[0]
+            if not os.path.exists(working_dir):
+                working_dir = get_case_insensitive_name(working_dir)
         elif executable:
             command.append(executable)
         command.extend(launch_arguments)
@@ -115,9 +131,13 @@ def launch(arguments, unknown_args):
         if arguments.override_exe:
             command.append(arguments.override_exe)
             working_dir = os.path.split(arguments.override_exe)[0]
+            # Handle case sensitive file systems
+            if not os.path.exists(working_dir):
+                working_dir = get_case_insensitive_name(working_dir)
         else:
             command.append(info)
 
+    os.chdir(working_dir)
     command.extend(unknown_args)
     environment = os.environ.copy()
     environment.update(envvars)
@@ -134,9 +154,6 @@ def launch(arguments, unknown_args):
             environment.update({"LD_LIBRARY_PATH": ":".join(splitted)})
 
     print("Launch command:", command)
-    # Handle case sensitive file systems
-    if not os.path.exists(working_dir):
-        working_dir = get_case_insensitive_name(working_dir)
 
     status = None
     if sys.platform == 'linux':
@@ -147,7 +164,7 @@ def launch(arguments, unknown_args):
         if result == -1:
             print("PR_SET_CHILD_SUBREAPER is not supported by your kernel (Linux 3.4 and above)")
 
-        process = subprocess.Popen(command, cwd=working_dir, env=environment)
+        process = subprocess.Popen(command, env=environment)
         process_pid = process.pid
 
         def iterate_processes():
@@ -213,7 +230,7 @@ def reap_children():
 
 
     else:
-        process = subprocess.Popen(command, cwd=working_dir, env=environment,
+        process = subprocess.Popen(command, env=environment, 
                                    shell=sys.platform=="win32")
         status = process.wait()