Quick Reference Handbook

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jj

Forget unwanted jj remote bookmarks

From: 202510 Snippets

$ jj bookmark list --remote upstream -T 'concat(self.name(), "\n")' \
    | grep -v -E '^(master|nixos-unstable|staging|staging-next)$' \
    | xargs jj bookmark forget --include-remotes
Forgot 29 local bookmarks.
Forgot 29 remote bookmarks.

linux

altgr-intl + compose key (NixOS)

From: 202503 Snippets and Links

{
    services.xserver.xkb.layout = "us";
    services.xserver.xkb.variant = "altgr-intl"; # «cool and new»
    services.xserver.xkb.options = "compose:rwin"; # grp:caps_toggle,grp_led:scroll
    # Required for some compose key mappings to work
    # <Multi_key> <Z> <Z>			: "ℤ"	U2124 # DOUBLE-STRUCK CAPITAL Z
    # just showed underlined CC without setting this
    environment.variables.GTK_IM_MODULE = "xim";
    environment.sessionVariables.GTK_IM_MODULE = "xim";
}

New box runbook

From: 202503 Snippets and Links

I try to configure most aspects of my systems declaratively in LunNova/nixos-configs. Some things are easier to do impurely.

• [ ] If using impermanence/persistence
  • [ ] Verify persisted dirs are bind mounted
  • [ ] Write something into ~ and reboot to confirm it's still there
  • [ ] Write user password hash to persist vol
• [ ] If using FDE
  • [ ] Ensure a recovery key that doesn't rely on TPM is safely recorded and tested
• [ ] Browser
  • [ ] uBlock Origin
  • [ ] Password manager
• [ ] Join tailnet
• [ ] Configure syncthing
• [ ] Ensure fstrim/discard is working so SSD won't die
• [ ] Ensure some sort of alert if the system is severely outdated is present

nix

Check nix cache presence from flake ref

From: 202510 Snippets

$ echo github:nixos/nixpkgs/{release-25.05,master}#ollama-rocm | xargs -n1 sh -c 'nix eval --raw "$1"; echo' -- | xargs -n1 nix path-info --store https://cache.nixos.org
/nix/store/kds9g0m2fhknx051gblg1d5lz52clf23-ollama-0.11.10
/nix/store/hd4lwgnfag8x8b8kir69lw2qhq8vhx2n-ollama-0.12.5
$ echo github:nixos/nixpkgs/staging#ollama-rocm | xargs -n1 sh -c 'nix eval --raw "$1"; echo' -- | xargs -n1 nix path-info --store https://cache.nixos.org
don't know how to build these paths:
  /nix/store/w1xxhfd5y0v5jbm19gzqlb4xa63bb1ym-ollama-0.12.5
error: path '/nix/store/w1xxhfd5y0v5jbm19gzqlb4xa63bb1ym-ollama-0.12.5' does not exist in the store