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brew install logtalkprovider-native install command
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Install logtalk with Homebrew
Declarative object-oriented logic programming language. Version 3.101.0 via Homebrew; verified 2026-07-23.
install
Additional install commands
overview
Package summary
Declarative object-oriented logic programming language
Project links
Commands and aliases
- bplgt
- ciaolgt
- cxlgt
- eclipselgt
- gplgt
- jiplgt
- lgt2html
- lgt2md
- lgt2pdf
- lgt2rst
- lgt2svg
- lgt2txt
- lgt2xml
- lgtenv
- logtalk_allure_report
- logtalk_backend_select
- logtalk_doclet
- logtalk_setup_env.sh
- logtalk_tester
- logtalk_user_setup
- logtalk_version_select
- quintuslgt
- sicstuslgt
- swilgt
- taulgt
- tplgt
- xsblgt
- xvmlgt
- yaplgt
history
Project history and usage
Logtalk is a declarative object-oriented logic programming language that extends Prolog with encapsulation, code reuse, protocols, categories, events, and tooling for programming in the large.
Project history
The Logtalk project began in January 1998. Official Logtalk materials state that the first public alpha appeared in July 1998, the first public beta in October 1998, and the first stable 2.0 release in February 1999.
Logtalk's third generation started in 2012, with the first public alpha in August 2012 and the stable 3.0.0 release in January 2015. The official GitHub repository for `logtalk3` was created in August 2012, matching that third-generation development line.
The upstream README describes Logtalk as a portable trans-compiler that can use most modern standards-compliant Prolog systems as backend compilers. Its distribution includes documentation, tutorials, libraries, developer tools, examples, man pages, and release notes.
Adoption history
Logtalk is specialized rather than mainstream, but it has had unusually long continuity for a language package. The official site provides installers and documentation, and the supplied package facts list availability through Homebrew, MacPorts, and Windows Package Manager.
Its adoption is tied to the Prolog ecosystem: Logtalk offers a common object-oriented and component-oriented layer above multiple backend Prolog compilers, so package managers tend to expose many integration scripts such as `swilgt`, `gplgt`, `sicstuslgt`, and others.
How it is used
Users run Logtalk through backend-specific integration scripts and load `.lgt` source files. The manual documents `settings.lgt` files for customizing compiler flags and library paths, searched from startup, user, home, and platform config directories.
The package also ships documentation conversion and testing tools such as `lgt2html`, `lgt2md`, `lgt2pdf`, and `logtalk_tester`, making it both a language runtime and a developer-tool suite.
Why package nerds care
Logtalk matters in package history because it is a rare long-running logic-language layer whose package surface is mostly integration scripts. Maintaining it is less about one binary and more about connecting a portable language implementation to many Prolog backends and documentation tools.
Timeline
- 1998: Project started in January; first public alpha released in July.
- 1999: First stable 2.0 release published in February.
- 2012: Third-generation development starts and the `logtalk3` repository is created.
- 2015: Logtalk 3.0.0 stable release published.
- 2026: Logtalk 3.100.x tags appear in the official repository.
Related projects
- Logtalk is designed to run on top of backend Prolog systems, including SWI-Prolog, GNU Prolog, SICStus Prolog, XSB, YAP, and others documented by its integration scripts.
- It is related to Prolog module systems, object-oriented Prolog extensions, and multi-paradigm logic programming environments.
Sources
security posture
Risk level: yellow
generalized runtime or code generation signal.
Risk classifier
yellow risk · medium confidence · runtime
Why
- generalized runtime or code generation signal
Signals
- text:programming language
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.
local files
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
Config paths the tool may read or write during local use.
- Unix
$LOGTALK_STARTUP_DIRECTORY/settings.lgt$LOGTALKUSER/settings.lgt~/settings.lgt$XDG_CONFIG_HOME/logtalk/settings.lgt~/.config/logtalk/settings.lgt- Windows
%USERPROFILE%\settings.lgt%APPDATA%\Logtalk\settings.lgt
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
bplgt | executable | indexed executable | Discovered from the local executable index. |
ciaolgt | executable | indexed executable | Discovered from the local executable index. |
cxlgt | executable | indexed executable | Discovered from the local executable index. |
eclipselgt | executable | indexed executable | Discovered from the local executable index. |
gplgt | executable | indexed executable | Discovered from the local executable index. |
jiplgt | executable | indexed executable | Discovered from the local executable index. |
lgt2html | executable | indexed executable | Discovered from the local executable index. |
lgt2md | executable | indexed executable | Discovered from the local executable index. |
lgt2pdf | executable | indexed executable | Discovered from the local executable index. |
lgt2rst | executable | indexed executable | Discovered from the local executable index. |
lgt2svg | executable | indexed executable | Discovered from the local executable index. |
lgt2txt | executable | indexed executable | Discovered from the local executable index. |
lgt2xml | executable | indexed executable | Discovered from the local executable index. |
lgtenv | executable | indexed executable | Discovered from the local executable index. |
logtalk_allure_report | executable | indexed executable | Discovered from the local executable index. |
logtalk_backend_select | executable | indexed executable | Discovered from the local executable index. |
logtalk_doclet | executable | indexed executable | Discovered from the local executable index. |
logtalk_setup_env.sh | executable | indexed executable | Discovered from the local executable index. |
logtalk_tester | executable | indexed executable | Discovered from the local executable index. |
logtalk_user_setup | executable | indexed executable | Discovered from the local executable index. |
logtalk_version_select | executable | indexed executable | Discovered from the local executable index. |
quintuslgt | executable | indexed executable | Discovered from the local executable index. |
sicstuslgt | executable | indexed executable | Discovered from the local executable index. |
swilgt | executable | indexed executable | Discovered from the local executable index. |
taulgt | executable | indexed executable | Discovered from the local executable index. |
tplgt | executable | indexed executable | Discovered from the local executable index. |
xsblgt | executable | indexed executable | Discovered from the local executable index. |
xvmlgt | executable | indexed executable | Discovered from the local executable index. |
yaplgt | executable | indexed executable | Discovered 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 version3.101.0
manager updated2026-07-23
local dataunknown
upstreamnot available
latest detectednot detected
- okNo freshness warnings were generated.
install metadata
Package metadata
| Package key | brew:logtalk |
|---|---|
| Version | 3.101.0 |
| Package manager | Homebrew |
| Homepage | https://logtalk.org/ |
| Repository | https://github.com/LogtalkDotOrg/logtalk3 |
| Last updated | 2026-07-23T17:20:34Z |
| Pulse | updated |
| Bottle | not recorded |
| Service | none declared |
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.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- Nucleus package database
- curated configuration and credential file locations
- curated package history
- pkgdb category and tag curation