Nix 2.30.0 (2025-07-07) changed the build directory from /tmp to /nix/var/nix/builds which broke a number of builds because my ZFS datasets were utf8only. This adds a role to mount tmpfs to /nix/var/nix/builds to restore the old behavior.
Nix 2.30.0 (2025-07-07) changed the build directory from /tmp to /nix/var/nix/builds which broke a number of builds because my ZFS datasets were utf8only. This adds a role to mount tmpfs to /nix/var/nix/builds to restore the old behavior.