Darwin obsidian.nvim obsidian.pickers._fzf dependency failing despite fzf being installed

[InvalidFunction0]

I've been trying to get Obsidian.nvim through Nixvim working, and it all runs fine on my NixOS system, but when I try and run this on Darwin, an M3 MacBook Air, the obsidian.pickers._fzf dependency fails. fzf is installed through environment.systemPackages, and I also have the fzf-lua plugin enabled, so I can't work out what's wrong.

Sorry if this isn't the right place for this, but I don't really know where else to ask.

My config can be found here

[InvalidFunction0]

The error log is:

error: Cannot build '/nix/store/7hfy11kp0vy0axbfqyxk1wm5jn371ria-vimplugin-obsidian.nvim-2025-10-11.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/wj9f9m8gg3pc1wqhpxjj8hqhqvpvhizc-vimplugin-obsidian.nvim-2025-10-11
       Last 25 log lines:
       >   - obsidian.commands.toc
       >   - obsidian.commands.new
       >   - obsidian.commands.open
       >   - obsidian.commands.links
       >   - obsidian.commands.link_new
       >   - obsidian.commands.new_from_template
       >   - obsidian.commands.template
       >   - obsidian.commands.follow_link
       >   - obsidian.commands.extract_note
       >   - obsidian.commands.dailies
       >   - obsidian.log
       >   - obsidian.types
       >   - obsidian.util
       >   - obsidian.compat
       >   - obsidian.img_paste
       >   - obsidian.api
       >   - obsidian.ui
       >   - obsidian.client
       > All lua modules were checked.
       >
       > Require check failed for the following modules:
       >   - obsidian.pickers._fzf
       >
       > Checkout https://nixos.org/manual/nixpkgs/unstable/#testing-neovim-plugins-neovim-require-check
       > ======================================================
       For full logs, run:
         nix log /nix/store/7hfy11kp0vy0axbfqyxk1wm5jn371ria-vimplugin-obsidian.nvim-2025-10-11.drv
error: Cannot build '/nix/store/d44grzwfxc3r4q0mm9hbdppagmsn33a7-neovim-0.11.4.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/nw054ib6cc9cn5vksr494y9snv0sdqh8-neovim-0.11.4
error: Cannot build '/nix/store/arpyp2dd4wi10gr8fq4j4q055ha7mk7s-nixvim.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/rfbczipzzqcszrmxb5snlnhd8zqwl177-nixvim
error: Cannot build '/nix/store/69ig5mryxiaw93k6gmsjxhnch6g9il4n-home-manager-applications.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/49v93xa2h3g9rw5z2y5bzpi81qbkhh4c-home-manager-applications
error: Cannot build '/nix/store/6h8ad8i196igrj6jakcyciljwm1p0pq1-home-manager-fonts.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/yn2jisp95svy7y7g1k17mv38kq3bsc2g-home-manager-fonts
error: Cannot build '/nix/store/v8zdd9sbg5cr6bhhw4z9i769d3rvialh-home-manager-path.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/8v6bcbgg7101si5hbv7z6pv6pyfpdb7g-home-manager-path
error: Cannot build '/nix/store/kdn98lck4fk8zsr0ak7sbkayqqry14pd-home-manager-generation.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/yznggcq23rqvqg2q7q910fagh047529c-home-manager-generation
error: Cannot build '/nix/store/daqq8ji53sqaf4zqi94r5vmgd1ssigk6-user-environment.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/qgplm99xakcv4yfgpr1iyirddw12cxnv-user-environment
error: Cannot build '/nix/store/h36gwqdn4x8i4l7jg4dp7r00f9519dgq-activation-ayaanwaqas.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/d2pvagck1wmfckq0f7i8v3wwiimcbfva-activation-user
error: Cannot build '/nix/store/gd3v5icqlpmgn7g2dk521r9mp2p8j3sd-darwin-system-25.11.9a9ab01.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/1vpc9p9pfmcshr6s20x15f50vgg3csbk-darwin-system-25.11.9a9ab01