# Install tcl-tk@8 with Homebrew, zypper Tool Command Language. Version 8.6.18 via Homebrew; verified 2026-06-27. ## Install ```sh sudo av install brew:tcl-tk@8 ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install tcl-tk@8 ``` Evidence: local Homebrew formula metadata ### Linux - zypper (92%): ```sh sudo zypper install tcl ``` Evidence: openSUSE Tumbleweed package metadata: tcl from https://download.opensuse.org/tumbleweed/repo/oss/repodata/be8d3611d25469107f32075a1697e69ec57a2b850b42348a658cc671ad5ec2b50760d02c3e59524d50da9a11d5be799bdaffba2e166e8ca8858512e3c0bd665d-primary.xml.zst ## Package facts - **Package key:** brew:tcl-tk@8 - **Package manager:** Homebrew - **Package manager page:** - **Version:** 8.6.18 - **Source summary:** Tool Command Language - **Homepage:** - **Repository:** - **Upstream docs:** - **License:** TCL - **Source archive:** - **Last updated:** 2026-06-27T16:45:24-04:00 - **Generated:** 2026-07-08T07:18:31+00:00 ## Executables - tclsh8.6 (cli) - wish8.6 (cli) - tclsh8.6 (alias) - wish8.6 (alias) ## Dependencies - openssl@3 ## Install behavior - Post-install hook: not defined - Caveats: The sqlite3_analyzer binary is in the `sqlite-analyzer` formula. - Bottle: available on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux ## Freshness - Page generated: 2026-07-08 - Package-manager version: 8.6.18 - Package-manager updated: 2026-06-27 - Local data: ok - Upstream repository: https://www.tcl-lang.org - info: Release/tag comparison is only available for GitHub repositories. ## Project history and usage Tcl/Tk 8 is the legacy Tcl/Tk release line packaged for users and software that still need the 8.6 ABI, tools, and documentation rather than the newer Tcl/Tk 9 line. ### Project history The upstream history is the Tcl/Tk history: Tcl began as John Ousterhout's embeddable command language at Berkeley, with implementation starting in 1988, and Tk followed as a reusable GUI toolkit released publicly in 1991. The official Tcl/Tk 8.6 page states that Tcl/Tk 8.6 was first released in 2012, that development ends in 2026, and that Tcl/Tk 9.0 became the successor release line in 2024. Homebrew's tcl-tk@8 formula is therefore best understood as a compatibility package, not a separate upstream project. ### Adoption history Tcl/Tk's early adoption came through Unix distribution, USENIX visibility, FTP source availability, Expect among system administrators, and Tk as a lower-effort way to build Unix GUIs. The 8.6 line stayed important because many deployed Tcl scripts, Tk applications, extensions, and embedded interpreters were written against Tcl 8 behavior and APIs before the compatibility changes introduced by Tcl/Tk 9. ### How it is used Package-manager users choose tcl-tk@8 when a dependency expects Tcl/Tk 8.6, when older Tk applications need the legacy runtime, or when versioned executables such as tclsh8.6 and wish8.6 are required. The official 8.6 page highlights bundled packages, TclOO, coroutine support, IPv6 sockets, zlib, PNG support in Tk, and other features that made 8.6 a long-lived stable baseline. ### Why package nerds care This formula matters because versioned runtime packages are how package managers keep old build systems and GUI tools working while allowing the default formula to move to a new major release. For dependency solvers and maintainers, Tcl/Tk 8 is the kind of legacy runtime where ABI expectations and executable names matter more than novelty. ### Timeline - 1988: Tcl implementation began at Berkeley. - 1991: Tk first Internet release. - 2012: Tcl/Tk 8.6 first released. - 2024: Tcl/Tk 9.0 became the successor release line. - 2026: Official 8.6 page lists Tcl/Tk 8.6.18 and says 8.6 development ends in 2026. ### Related projects - The unversioned tcl-tk formula follows the current Tcl/Tk line. - Tcl/Tk 9.0 is the successor major line; Tcllib, Tklib, Expect, TclOO, Thread, and TDBC are related Tcl ecosystem projects. ### Sources - - - - ## Security Notes No matching local secret-handling manifest was found for tcl-tk@8. Nucleus package metadata is still published here so future coverage has a stable package URL. ## Source Database Details - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** tcl-tk@8 - **Version Scheme:** 0 - **Revision:** 0 - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** yes - **URL Keys:** stable ## Other Package-Manager Records - zypper - tcl - 8.6.18-1.1: installed executable or alias match | openSUSE Tumbleweed package metadata: tcl from https://download.opensuse.org/tumbleweed/repo/oss/repodata/be8d3611d25469107f32075a1697e69ec57a2b850b42348a658cc671ad5ec2b50760d02c3e59524d50da9a11d5be799bdaffba2e166e8ca8858512e3c0bd665d-primary.xml.zst | The Tcl Programming Language | http://www.tcl.tk - zypper - tk - 8.6.18-1.1: installed executable or alias match | openSUSE Tumbleweed package metadata: tk from https://download.opensuse.org/tumbleweed/repo/oss/repodata/be8d3611d25469107f32075a1697e69ec57a2b850b42348a658cc671ad5ec2b50760d02c3e59524d50da9a11d5be799bdaffba2e166e8ca8858512e3c0bd665d-primary.xml.zst | Graphical User Interface Toolkit for Tcl | http://www.tcl.tk ## Related links - [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. - [openssl@3](https://www.automicvault.com/pkg/brew/openssl-3/) - Runtime dependency declared by Homebrew. - [expect](https://www.automicvault.com/pkg/brew/expect/) - Popular package that depends on this formula. - [opencascade](https://www.automicvault.com/pkg/brew/opencascade/) - Popular package that depends on this formula. - [pidgin](https://www.automicvault.com/pkg/brew/pidgin/) - Popular package that depends on this formula. - [pypy](https://www.automicvault.com/pkg/brew/pypy/) - Popular package that depends on this formula. - [pypy3.10](https://www.automicvault.com/pkg/brew/pypy3-10/) - Popular package that depends on this formula. - [pypy3.11](https://www.automicvault.com/pkg/brew/pypy3-11/) - Popular package that depends on this formula. - [tcl-tk](https://www.automicvault.com/pkg/brew/tcl-tk/) - Package name indicates the same formula family. ## Combined YAML source View the package source record on GitHub. [combined/tcl-tk@8.yml](https://github.com/automic-vault/db/blob/main/combined/tcl-tk@8.yml) ## Sources - Nucleus package database - package-page enrichment - curated package history - package version freshness - package relationship graph - external package-manager database matches - cross-ecosystem install command graph