install

Additional install commands

macOS

Homebrewverified · 100%

brew install fortls

local Homebrew formula metadata

Linux

Nixverified · 92%

nix profile install nixpkgs#fortls

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

overview

Package summary

Fortran language server

Project links

Commands and aliases

fortls

history

Project history and usage

fortls is the Fortran Language Server, a Python implementation of the Language Server Protocol for Fortran. It provides editor features such as symbols, hover, signature help, completion, go-to definition, references, rename, diagnostics, and code actions.

Project history

The fortran-lang/fortls repository was created in October 2021. The README says the project was originally based on hansec/fortran-language-server, but later diverged and is now developed independently with additional features and fixes.

The official README also states that fortls has reached a feature-complete and stable maintenance phase while Fortran-lang work explores a newer language server based on LFortran for deeper syntax understanding.

Adoption history

fortls is designed for any editor that supports LSP. The official README names Visual Studio Code, Atom, Sublime Text, Vim/Neovim/gVim, and Emacs integrations, reflecting adoption through editor plugins rather than only command-line invocation.

How it is used

Users install fortls with pip or conda-forge and point an editor's LSP client at the fortls executable. Configuration can be supplied through command-line options or JSON configuration files such as .fortlsrc, .fortls.json, or .fortls at a project root.

Why package nerds care

fortls is significant because it gives Fortran the same LSP packaging shape familiar from newer language ecosystems: a standalone server executable, Python package distribution, conda-forge availability, editor-neutral protocol support, and project-local configuration.

Timeline

2021: fortran-lang/fortls repository created.
2022: 2.x release series published.
2024: 3.0.0 release published.
2025: 3.2.2 release published.

Related projects

fortls is historically related to hansec/fortran-language-server and is part of the Fortran-lang ecosystem. The README points to future LFortran-based language-server work as the planned path for deeper Fortran syntax and semantic support.

Sources

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:server

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 1 platform targets.
Installs with 1 runtime dependencies.

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: root_path/.fortlsrcroot_path/.fortls.jsonroot_path/.fortls

executables

Installed executables

Command	Kind	Exposure	Note
`fortls`	cli	global executable

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 generated2026-07-07

manager version3.2.2

manager updated2026-06-13

local dataok

upstreamnot checked

latest detectednot detected

https://fortls.fortran-lang.org/

infoRelease/tag comparison is only available for GitHub repositories.https://fortls.fortran-lang.org/none confidence

install metadata

Package metadata

Package key	brew:fortls
Version	3.2.2
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/fortls
Homepage	https://fortls.fortran-lang.org/
Repository	https://github.com/fortran-lang/fortls
Upstream docs	https://fortls.fortran-lang.org/
License	MIT
Source archive	https://files.pythonhosted.org/packages/c1/2b/db1e5cd07fc9e74a2e4fb8f65946f8fd79ef72211001af00982a04d977d5/fortls-3.2.2.tar.gz
Last updated	2026-06-13T01:24:12+02:00
Pulse	updated
Dependencies	python@3.14
Bottle	available (on all)
Homebrew post-install	not defined
Service	none declared

registry facts

Source database details

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	fortls
Version Scheme	0
Revision	0
Head Version	HEAD
Conflicts With	fortran-language-server
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	head stable

source database matches

Other package-manager records

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

Nix95%

fortls

nix profile install nixpkgs#fortls

normalized package name match
Matched by: Fortls

nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/fo/fortls/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

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.

Combined YAML source

View the package source record on GitHub.

combined/fortls.yml

Used sources

Geiger risk classifier
Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated configuration and credential file locations
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment

Install fortls with Homebrew, Nix