The details below describe how to install and configure the Clojure language server.

Installing the Language Server

Details regarding the Clojure server can be found here and the releases for the server can be downloaded from here.
The installation is as simple as downloading the file and extracting the single the executable into a installation folder, similar to the one shown below:
 Directory of D:\Utilities\LSP\clojure

18/01/2024  06:45 PM        28,003,022
29/12/2023  12:26 PM        28,999,168 clojure-lsp.exe
               2 File(s)     57,002,190 bytes
               2 Dir(s)  283,507,347,456 bytes free
With the software installed test the installation by running D:\Utilities\LSP\clojure\clojure-lsp.exe --help at the command line prompt, which should result in the following output:
Clojure development tool implementing LSP

Usage: clojure-lsp <command> [<options>]

All options:
  -h, --help                           Print the available commands and its options
      --version                        Print clojure-lsp version
      --verbose                        Use stdout for clojure-lsp logs instead of default log settings
      --trace                          Deprecated: use --trace-level instead.
      --trace-level LEVEL       off    Enable trace logs between client and server, for debugging. Set to 'messages' for basic traces, or 'verbose' for more detailed traces. Defaults to 'off' for no traces.
  -s, --settings SETTINGS              Optional settings as edn to use for the specified command. For all available settings, check
      --log-path PATH                  Path to use as the log path for clojure-lsp.out, debug purposes only.
      --dry                     false  Make no changes to files, only report diffs
      --raw                     false  Print only necessary data
  -p, --project-root PATH              Specify the path to the project root to clojure-lsp consider during analysis startup.
  -n, --namespace NS            []     Optional namespace to apply the action, all if not supplied. This flag accepts multiple values
      --filenames FILENAMES            Optional filenames to apply the action. Filenames can be either absolute/relatetive files or directories. This flag accepts filenames separated by comma or double colon.
      --ns-exclude-regex REGEX         Optional regex representing the namespaces to be excluded during a command
  -o, --output EDN                     Optional settings as edn on how the result should be printed. Check `clojure-lsp.api/diagnostics`/`clojure-lsp.api/dump` for all available options to this flag.
      --from FROM                      Full qualified symbol name or ns only, e.g. my-project/my-var. option for rename/references
      --to TO                          Full qualified symbol name or ns only, e.g. my-project/my-var. option for rename
      --analysis EDN                   Optional settings as edn on how clojure-lsp should consider the analysis. Check `clojure-lsp.api/dump` for all available options to this flag.

Available commands:
  listen (or empty)    Start clojure-lsp as server, listening to stdin.
  clean-ns             Organize ns form, removing unused requires/refers/imports and sorting alphabetically.
  diagnostics          Analyze the project and find all diagnostics (warnings, errors).
  format               Format code using cljfmt.
  rename               Rename a symbol and all references across the project, use --from and --to options.
  references           Find all references of a full qualified symbol across the project and/or dependencies, use --from option.
  dump (experimental)  Dump all project known data including classpath, source-paths, dep-graph and clj-kondo analysis data.

See for detailed documentation.

New Clojure Document Type

To add the language server requires the creation of a new Zeus Clojure document type. For details on how to do this refer to the instructions found here.


Start Zeus and use the Options, Document Types menu to edit the Clojure document type and in the Language Server panel apply the following configuration settings:
Program Type: Executable
     Program: D:\Utilities\LSP\clojure\clojure-lsp.exe
NOTE: The directory details of the executable can be omitted provided the executable installation folder has been added to the system PATH environment variable.

Using the Language Server

To test the configuration create a simple test.clj file and fire off a keyboard auto-complete request:
LSP Clojure
NOTE: In the image above the autocomplete was fired using the Alt+Space keyboard command.

Latest Version: Zeus 3.99b
Released: 29th January 2024