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illustris/nix_cheat_sheet.md

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nix_cheat_sheet.md

Nix

Get .drv for /etc/nixos/configuration.nix

nix-instantiate '<nixos>' -A system

Pretty print derivation

nix show-derivation /nix/store/qfriughbauiryghbauiobfghvoiadfbuhgvadffhngvn.drv

Explore dependency tree of derivation

nix-tree /nix/store/qfriughbauiryghbauiobfghvoiadfbuhgvadffhngvn.drv

Build package from local nixpkgs

nix-shell -I nixpkgs=$(pwd) -p python38Packages.percol

Diff two closures

source

nix --extra-experimental-features nix-command store diff-closures /run/{booted,current}-system

Get the store path for a package

source

nix-build '<nixpkgs>' --no-build-output -A snappy

Show why a package has another package in its closure

source

nix --extra-experimental-features nix-command why-depends /run/current-system /nix/store/hv5nhj0pc3zpnc3z44mvzbq0zjmgwcjr-snappy-1.1.9

Display a dependency diagram of any closure

nix-shell -p graphviz imagemagick --run 'nix-store -q --graph `which htop` | dot -Tsvg | display'

View nixos options from local nixpkgs

jq < $(nix-build nixos/release.nix -A options)/share/doc/nixos/options.json | less

PVE

Get next VMID

pvesh get /cluster/nextid
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