# Install clac with Homebrew, MacPorts, Nix Command-line, stack-based calculator with postfix notation. Version 0.3.5 via Homebrew; verified 2026-04-13. ## Install ```sh sudo av install brew:clac ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install clac ``` Evidence: local Homebrew formula metadata - MacPorts (94%): ```sh sudo port install clac ``` Evidence: MacPorts ports tree: math/clac/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ### Linux - Nix (92%): ```sh nix profile install nixpkgs#clac ``` Evidence: nixpkgs package indexes: pkgs/by-name/cl/clac/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 ## Package facts - **Package key:** brew:clac - **Package manager:** Homebrew - **Package manager page:** - **Version:** 0.3.5 - **Source summary:** Command-line, stack-based calculator with postfix notation - **Homepage:** - **Repository:** - **Upstream docs:** - **License:** BSD-2-Clause - **Source archive:** - **Last updated:** 2026-04-13T10:27:34Z - **Generated:** 2026-07-08T18:08:21+00:00 ## Executables - clac (cli) - clac (alias) ## Install behavior - Post-install hook: not defined - Bottle: available on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux ## Freshness - Page generated: 2026-07-08 - Package-manager version: 0.3.5 - Package-manager updated: 2026-04-13 - Local data: ok - Upstream repository: https://github.com/soveran/clac - Upstream latest detected: 0.3.5 (current) ## Project history and usage Clac is a command-line, stack-based calculator using postfix notation with the stack visible as calculations happen. ### Project history The official repository was created in 2017 and its first GitHub release was named Initial release. The README explains the project motivation: the author liked Forth and other concatenative languages, used `dc` heavily, and wanted a calculator UI with an always-visible stack and realtime updates. ### Adoption history The batch input records Clac in Homebrew, MacPorts, and Nix. The official README directs users to GitHub releases and a distribution-packages wiki page, indicating upstream expected both direct release installs and package-manager installs. ### How it is used Users run `clac` interactively, enter numbers to push them onto the stack, and type postfix commands such as arithmetic, logarithm, trigonometry, stack, stash, and custom word operations. The README documents a `words` configuration file for user-defined operations. ### Why package nerds care Clac is a neat package-manager specimen because it modernizes the tiny terminal calculator niche rather than replacing it with a GUI. It is small, self-contained, configurable through XDG-style paths, and culturally adjacent to `dc`, Forth, and RPN calculator users. ### Timeline - 2017: Official GitHub repository created. - 2017: Initial release 0.1.0 published. - 2026: Official GitHub repository metadata shows recent activity. ### Related projects - The README explicitly relates Clac to `dc`, Forth, stack-based languages, concatenative languages, postfix notation, and reverse Polish notation. ### Sources - - - ## Security Notes narrow executable package without higher-risk signals. - **Geiger risk:** green / low - narrow executable package without higher-risk signals ## Configuration and credential file locations These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval. ## Configuration files - Unix: $CLAC_WORDS, $XDG_CONFIG_HOME/clac/words, ~/.config/clac/words ## Source Database Details - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** clac - **Version Scheme:** 0 - **Revision:** 0 - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** no - **URL Keys:** stable ## Other Package-Manager Records - Nix - clac: normalized package name match | nixpkgs package indexes: pkgs/by-name/cl/clac/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 - MacPorts - clac: normalized package name match | MacPorts ports tree: math/clac/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ## Related links - [Source-control packages](https://www.automicvault.com/pkg/source-control-tools/) - Belongs to a source-control command family. - [Terminal utility packages](https://www.automicvault.com/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata. - [Networking and protocol packages](https://www.automicvault.com/pkg/networking-protocol-tools/) - Matched network, protocol, or remote-service metadata. - [Productivity CLI packages](https://www.automicvault.com/pkg/productivity-cli-packages/) - Matched curated productivity category metadata from av.db. - [fend](https://www.automicvault.com/pkg/brew/fend/) - Shares av.db curated category or tags: calculator, cli, productivity. - [kalker](https://www.automicvault.com/pkg/brew/kalker/) - Shares av.db curated category or tags: calculator, cli, productivity. - [squiid](https://www.automicvault.com/pkg/brew/squiid/) - Shares av.db curated category or tags: calculator, cli, productivity. - [w-calc](https://www.automicvault.com/pkg/brew/w-calc/) - Shares av.db curated category or tags: calculator, cli, productivity. - [abook](https://www.automicvault.com/pkg/brew/abook/) - Shares av.db curated category or tags: cli, productivity, terminal. - [aerc](https://www.automicvault.com/pkg/brew/aerc/) - Shares av.db curated category or tags: cli, productivity, terminal. - [alot](https://www.automicvault.com/pkg/brew/alot/) - Shares av.db curated category or tags: cli, productivity, terminal. - [alpine](https://www.automicvault.com/pkg/brew/alpine/) - Shares av.db curated category or tags: cli, productivity, terminal. - [mdp](https://www.automicvault.com/pkg/brew/mdp/) - Local package facts share a topical domain. Shared terms: based, cli, command-line, line, productivity. - [bartib](https://www.automicvault.com/pkg/brew/bartib/) - Local package facts share a topical domain. Shared terms: cli, command-line, line, productivity, terminal. - [nmail](https://www.automicvault.com/pkg/brew/nmail/) - Local package facts share a topical domain. Shared terms: based, cli, productivity, terminal. ## Combined YAML source View the package source record on GitHub. [combined/clac.yml](https://github.com/automic-vault/db/blob/main/combined/clac.yml) ## Sources - Nucleus package database - Geiger risk classifier - package-page enrichment - curated configuration and credential file locations - curated package history - package version freshness - av.db category and tag curation - package relationship graph - external package-manager database matches - cross-ecosystem install command graph