Hi, > So please, make sure to run a Linux(-Libre) kernel known to have the fix > (3.5 and 3.6 are known broken, AIUI.) I'm using 3.4 and ext3. That error occurred because of these options: # CONFIG_EXT3_FS is not set CONFIG_EXT4_FS=y CONFIG_EXT4_USE_FOR_EXT23=y CONFIG_EXT4_FS_XATTR=y CONFIG_EXT4_FS_POSIX_ACL=y CONFIG_EXT4_FS_SECURITY=y I've been told that ext4 is broken. So I disabled it and enabled ext3. Then I invoked 'nix-build -A stdenv -K /home/nixpkgs-github' and it succeeded. (How can I check it?) I'm going to build the bootstrap binaries. Oh, I've just noticed that I'm still using Nix 1.1. Should I update to 1.3 and try after that? Does it matter? Nikita