mirror of
https://github.com/ilyakooo0/nixpkgs.git
synced 2024-11-12 03:56:17 +03:00
2400191caf
Back in 2013, update-mime-database started using fdatasync() to write out its changes after processing each file in /share/mime, with the reasoning that a corrupted database from an interruption midway would be problematic for applications[1]. Unfortunately, this caused a significant regression in the time required to run update-mime-database: commonly from under a second to half a minute or more. This delay affects the time required to build system-path on NixOS, when xdg.mime.enable is true (the default). For example, on one of my systems system-path builds in ~48 seconds, 45 of which are update-mime-database. This makes rapidly building new system configurations not fun. This commit disables the calls to fdatasync(). update-mime-database checks an environment variable, PKGSYSTEM_ENABLE_FSYNC, to determine whether it should sync, and we can set this to false. system-path already only has whatever filesystem commit guarantees that the Nix builder provides. Furthermore, there is no risk of a failed MIME database update messing up existing packages, because this is Nix. (This issue was also reported at and discussed by Debian, Red Hat, and Gentoo at least.) [1] https://bugs.freedesktop.org/show_bug.cgi?id=70366 |
||
|---|---|---|
| .. | ||
| autostart.nix | ||
| icons.nix | ||
| menus.nix | ||
| mime.nix | ||
| sounds.nix | ||