# Install ol with Homebrew, apk Purely functional dialect of Lisp. Version 2.7 via Homebrew; verified from local package data. Also installable with apk: sudo apk add ol. ## Install ```sh sudo av install brew:ol ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install ol ``` Evidence: local Homebrew formula metadata ### Linux - apk (92%): ```sh sudo apk add ol ``` Evidence: Alpine Linux edge package indexes: ol from https://dl-cdn.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz ## Package facts - **Package key:** brew:ol - **Package manager:** Homebrew - **Package manager page:** - **Version:** 2.7 - **Source summary:** Purely functional dialect of Lisp - **Homepage:** - **Repository:** - **Upstream docs:** - **License:** LGPL-3.0-or-later OR MIT - **Source archive:** - **Generated:** 2026-07-26T07:20:29+00:00 ## Executables - ol (cli) - olvm (cli) - ol (alias) - olvm (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: 2026-07-26 - Package-manager version: 2.7 - Local data: ok - Upstream repository: https://github.com/yuriy-chumak/ol - Upstream latest detected: 2.7 (current) - info: No package-manager update timestamp was available. ## Project history and usage Otus Lisp, packaged as ol, is a small, cross-platform, purely functional Lisp dialect with Scheme influence. Its documentation describes it as implementing an extended subset of R7RS Scheme with built-in FFI, regular expressions, infix math notation, a REPL, an interpreter/compiler stack, and the olvm virtual machine. ### Project history The yuriy-chumak/ol repository was created on 2014-09-06. The project presents itself as both a language experiment and a practical embeddable runtime, emphasizing a tiny footprint, cross-platform support, and foreign-function access to C, Python, Lua, and operating-system APIs. ### Adoption history Otus Lisp has niche adoption compared with major Scheme and Lisp implementations. Its presence in Homebrew and Alpine packaging, plus its GitHub topic footprint around R7RS, FFI, interpreter, compiler, and virtual-machine work, show a package aimed at language implementers, embedded scripting users, and Lisp collectors rather than a broad application ecosystem. ### How it is used Users run ol or olvm to experiment with the language, execute scripts, embed the runtime, or use the FFI as a compact bridge to native libraries. The package's appeal is strongest where a small Lisp-like runtime and direct foreign calls matter more than a large library ecosystem. ### Why package nerds care For package nerds, ol is interesting because it is not just another Scheme package: it combines a deliberately tiny runtime, R7RS-flavored semantics, and a virtual-machine/compiler design in a Homebrew-installable artifact. It is the kind of package that preserves an independent language implementation in mainstream package indexes. ### Timeline - 2014-09-06: The yuriy-chumak/ol repository was created on GitHub. - 2026-07-01: GitHub repository metadata reported 278 stars, 14 forks, Scheme as the primary language, and active repository pushes in 2026. ### Related projects - Related references include R7RS Scheme, SRFI libraries, other embeddable Lisp and Scheme runtimes, and the repository's own olvm virtual machine. The package metadata also connects it to Homebrew and Alpine Linux package ecosystems. ### Sources - - - - - ## Security Notes narrow executable package without higher-risk signals. - **Geiger risk:** green / low - narrow executable package without higher-risk signals ## Source Database Details - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** ol - **Version Scheme:** 0 - **Revision:** 0 - **Head Version:** HEAD - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** no - **URL Keys:** head, stable ## Other Package-Manager Records - apk - ol - 2.6-r0: normalized package name match | Alpine Linux edge package indexes: ol from https://dl-cdn.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz | Purely functional dialect of Lisp | https://yuriy-chumak.github.io/ol/ - apk - ol-dev - 2.6-r0: normalized package name match | Alpine Linux edge package indexes: ol-dev from https://dl-cdn.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz | Purely functional dialect of Lisp (development files) | https://yuriy-chumak.github.io/ol/ - apk - ol-doc - 2.6-r0: normalized package name match | Alpine Linux edge package indexes: ol-doc from https://dl-cdn.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz | Purely functional dialect of Lisp (documentation) | https://yuriy-chumak.github.io/ol/ ## 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. - [Language runtime packages](https://www.automicvault.com/pkg/language-runtime-packages/) - Matched language runtime, compiler, or interpreter metadata. - [Networking and protocol packages](https://www.automicvault.com/pkg/networking-protocol-tools/) - Matched network, protocol, or remote-service metadata. - [gerbil-scheme](https://www.automicvault.com/pkg/brew/gerbil-scheme/) - Shares av.db curated category or tags: cli, ffi, language-runtime, lisp, scheme. - [newlisp](https://www.automicvault.com/pkg/brew/newlisp/) - Shares av.db curated category or tags: cli, language-runtime, lisp. - [chibi-scheme](https://www.automicvault.com/pkg/brew/chibi-scheme/) - Shares av.db curated category or tags: cli, embeddable, language-runtime, scheme. - [ecl](https://www.automicvault.com/pkg/brew/ecl/) - Shares av.db curated category or tags: cli, embeddable, language-runtime, lisp. - [gcl](https://www.automicvault.com/pkg/brew/gcl/) - Shares av.db curated category or tags: cli, language-runtime, lisp. - [janet](https://www.automicvault.com/pkg/brew/janet/) - Shares av.db curated category or tags: cli, embeddable, language-runtime, lisp. - [kawa](https://www.automicvault.com/pkg/brew/kawa/) - Shares av.db curated category or tags: cli, language-runtime, lisp, scheme. - [lispkit](https://www.automicvault.com/pkg/brew/lispkit/) - Shares av.db curated category or tags: cli, language-runtime, lisp, scheme. ## Combined YAML source View the package source record on GitHub. [combined/ol.yml](https://github.com/automic-vault/db/blob/main/combined/ol.yml) ## Sources - Nucleus package database - Geiger risk classifier - package-page enrichment - 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