LibCore: Read version information from uname() instead of /res/version

Author: https://github.com/kleinesfilmroellchen
Commit: https://github.com/SerenityOS/serenity/commit/38bb189772
Pull-request: https://github.com/SerenityOS/serenity/pull/15068
Issue: https://github.com/SerenityOS/serenity/issues/15071
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/Hendiadyoin1
Reviewed-by: https://github.com/gmta
Reviewed-by: https://github.com/linusg

Userland/Libraries/LibCore/Version.cpp

@@ -4,22 +4,22 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <LibCore/ConfigFile.h>
+#include <AK/String.h>
+#include <LibCore/System.h>
 #include <LibCore/Version.h>
 
 namespace Core::Version {
 
 String read_long_version_string()
 {
-    auto version_config = Core::ConfigFile::open("/res/version.ini").release_value_but_fixme_should_propagate_errors();
-    auto major_version = version_config->read_entry("Version", "Major", "0");
-    auto minor_version = version_config->read_entry("Version", "Minor", "0");
+    auto result = Core::System::uname();
+    if (result.is_error())
+        return {};
 
-    StringBuilder builder;
-    builder.appendff("Version {}.{}", major_version, minor_version);
-    if (auto git_version = version_config->read_entry("Version", "Git", ""); git_version != "")
-        builder.appendff(".g{}", git_version);
-    return builder.to_string();
+    auto version = result.value().release;
+    auto git_hash = result.value().version;
+
+    return String::formatted("Version {} revision {}", version, git_hash);
 }
 
 }