buck2: crashes on aarch64 with a 16k page size

[theoparis]

Describe the bug

On aarch64 systems such as Asahi Linux, or Raspberry pi 5 devices that use a 16k page size buck2 will not run due to jemalloc.

<jemalloc>: Unsupported system page size
memory allocation of 64 bytes failed

Steps To Reproduce

On an aarch64 host system with a 16k size, run:

nix run 'github:nixos/nixpkgs/master#buck2'

Expected behavior

The buck2 command and the buck2 init command should work.

Screenshots

Additional context

Notify maintainers

@thoughtpolice

Metadata

Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

[user@system:~]$ nix-shell -p nix-info --run "nix-info -m"

• system: "aarch64-linux"
• host os: Linux 6.11.0-400.asahi.fc40.aarch64+16k, Fedora Linux Asahi Remix, 40 (KDE Plasma), nobuild
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.24.9
• channels(root): "nixpkgs"
• nixpkgs: /nix/store/mln6wr5z539qgldmsm4j1k8k0dm19yvz-source

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[theoparis]

Hmm, this seems to be have been reported in https://github.com/facebook/buck2/issues/91 already 😕

[theoparis]

There also seems to be a environment variable called JEMALLOC_SYS_WITH_LG_PAGE which can be set to 16 🤔 Maybe buck2 can be rebuilt with this set.