Julia for Positron

Julia language support for Positron. Based on julia-vscode, Julia for Positron, and @wesm's closed PR on the positron repo.

Important

From version 0.1.3, the extension will be maintained under TidierOrg.

Features

• Julia Runtime — Start interactive Julia sessions directly in Positron's Console. Define variables, run code, and inspect results with the Variables pane and Data Explorer.
• Language Server — Powered by LanguageServer.jl for diagnostics, completions, go-to-definition, hover info, and more. Automatically installed on first use.
• Runtime Completions — Supplements LSP completions with live variables and functions from the running Julia session via the Jupyter complete_request protocol.
• Run Multiline Statements — Press Ctrl+Enter / Cmd+Enter to send the full multiline statement at the cursor (functions, loops, blocks) to the console. Handles function…end, if…end, unclosed brackets, pipe chains, and more.
• Semantic Highlighting — Enhanced syntax highlighting with semantic information from the Language Server for accurate color coding of functions, types, modules, and other language constructs.
• Data Explorer — Open DataFrames, matrices, and other tabular data in Positron's interactive Data Explorer with sorting, filtering, and summary statistics.
• Variables Pane — Browse all session variables with type and value summaries.
• Help Integration — View Julia documentation inline via Positron's Help pane.
• Plots — Julia plots are captured and displayed in Positron's Plots pane.
• Package Pane — Browse and manage Julia packages directly within Positron.

Requirements

• Positron IDE
• Julia
• IJulia installed in your global package environment (e.g. "1.12")

Getting Started

1. Install Julia from julialang.org or via juliaup.
2. Install this extension in Positron (Extensions view → Install from VSIX, or from the marketplace).
3. Open a .jl file or start a Julia console session from the interpreter picker.

On first launch, the extension automatically installs required Julia packages (IJulia, LanguageServer.jl, and supporting dependencies). This one-time setup may take a few minutes.

Extension Settings

Setting	Default	Description
positron.julia.executablePath	""	Path to a specific Julia executable
positron.julia.languageServer.enabled	true	Enable/disable the Julia Language Server
positron.julia.languageServer.environmentPath	""	Path to a Julia project environment for the Language Server
julia.lint.missingrefs	"all"	Control missing-reference diagnostics (all, id, none)

License

Elastic License 2.0 — see LICENSE.