R - Zed

# R

R support is available through the R extension.

- Tree-sitter: r-lib/tree-sitter-r
- Language-Server: REditorSupport/languageserver

## Installation

1. Download and Install R.
2. Install the R packages `languageserver` and `lintr`:

    install.packages("languageserver")
    install.packages("lintr")

3. Install the R Zed extension through Zed's extensions manager.

For example on macOS:

    brew install --cask r
    Rscript --version
    Rscript -e 'options(repos = "https://cran.rstudio.com/"); install.packages("languageserver")'
    Rscript -e 'options(repos = "https://cran.rstudio.com/"); install.packages("lintr")'
    Rscript -e 'packageVersion("languageserver")'
    Rscript -e 'packageVersion("lintr")'

## Ark Installation

To use the Zed REPL with R you need to install Ark, an R Kernel for Jupyter applications. You can down the latest version from the Ark GitHub Releases and then extract the `ark` binary to a directory in your `PATH`.

For example to install the latest non-debug build:

    # macOS
    cd /tmp
    curl -L -o ark-latest-darwin.zip \
        $(curl -s "https://api.github.com/repos/posit-dev/ark/releases/latest" | \
        jq -r '.assets[] | select(.name | contains("darwin-universal") and (contains("debug") | not)) | .browser_download_url')
    unzip ark-latest-darwin.zip ark
    sudo mv /tmp/ark /usr/local/bin/

    # Linux X86_64
    cd /tmp
    curl -L -o ark-latest-linux.zip \
        $(curl -s "https://api.github.com/repos/posit-dev/ark/releases/latest" \
            | jq -r '.assets[] | select(.name | contains("linux-x64") and (contains("debug") | not)) | .browser_download_url'
        )
    unzip ark-latest-linux.zip ark
    sudo mv /tmp/ark /usr/local/bin/