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brew / rank 9187

Install spigot with Homebrew, apt, Nix

Command-line streaming exact real calculator. Version 20260410 via Homebrew; verified from local package data. Also installable with debian: sudo apt install spigot.

Install commandSecurity notes

install

Additional install commands

macOS

Homebrewverified · 100%
brew install spigot

local Homebrew formula metadata

Linux

Debian aptverified · 92%
sudo apt install spigot

Debian stable package indexes · spigot · source: deb.debian.org

Nixverified · 92%
nix profile install nixpkgs#spigot

nixpkgs package indexes · pkgs/by-name/sp/spigot/package.nix · source: api.github.com

overview

Package summary

Command-line streaming exact real calculator

Commands and aliases

  • spigot

history

Project history and usage

spigot is Simon Tatham's command-line exact real calculator, aimed at producing verified digits from mathematical expressions rather than fast floating-point approximations.

Project history

The official page describes spigot as a streaming exact real calculator named after Jeremy Gibbons's unbounded spigot algorithm for digits of pi, expanded to support more output modes and input numbers.

Adoption history

The project is distributed from the author's site as a Unix source archive and Windows executable, with official development sources in a Tartarus git repository. The input package facts show it packaged in Homebrew, Debian, Nix, and Ubuntu.

How it is used

The manual documents an expression language, output modes, rounding modes, file and pipe input, and a Unix man-page appendix. Its niche is slow but exact calculation, especially for many digits, numerically fragile expressions, or cross-checking another system.

Why package nerds care

For package people, spigot is the pleasing sort of small CLI that rewards being packaged: mathematically specialized, scriptable, source-distributed, and useful as a reproducibility check when ordinary calculators hide rounding behavior.

Timeline

  • 2026: Official page offered source archive spigot-20260410.ed81b83.tar.gz and was last modified on April 10.
  • 2026: Official page documented the Tartarus git repository as the latest development source.

Related projects

  • Jeremy Gibbons's unbounded spigot algorithm
  • Unix calculators
  • exact real arithmetic tools

security posture

Risk level: blue

broad file, network, media, or database tool signal.

Risk classifier

blue risk · medium confidence · tool

Why

  • broad file, network, media, or database tool signal

Signals

  • text:stream

Install behavior

  • No Homebrew bottle metadata was recorded.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

executables

Installed executables

CommandKindExposureNote
spigotexecutableindexed executableDiscovered from the local executable index.

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-08-03
manager version20260410
manager updated
local dataunknown
upstreamnot available
latest detectednot detected
  • okNo freshness warnings were generated.

install metadata

Package metadata

Package keybrew:spigot
Version20260410
Package managerHomebrew
Homepagehttps://www.chiark.greenend.org.uk/~sgtatham/spigot/
Bottlenot recorded
Servicenone declared

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

Debian apt95%

spigot 0.2017-01-15.gdad1bbc6-1+b1

Exact real calculator

http://www.chiark.greenend.org.uk/~sgtatham/spigot/

sudo apt install spigot
  • Section: math
  • Architecture: amd64
  • Source Package: spigot
  • 5 dependencies
  • normalized package name match
  • Matched by: Spigot
Debian stable package indexes · deb.debian.org · Debian stable package indexes: spigot from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz
Nix95%

spigot

nix profile install nixpkgs#spigot
  • normalized package name match
  • Matched by: Spigot
nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/sp/spigot/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
Ubuntu apt95%

spigot 0.2017-01-15.gdad1bbc6-1build2

Exact real calculator

http://www.chiark.greenend.org.uk/~sgtatham/spigot/

sudo apt install spigot
  • Section: universe/math
  • Architecture: amd64
  • 5 dependencies
  • normalized package name match
  • Matched by: Spigot
Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: spigot from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Used sources

  • Geiger risk classifier
  • cross-ecosystem install command graph
  • curated package history
  • external package-manager database matches
  • pkg.so package database
  • pkgdb category and tag curation