Merge pull request #8 from guimarqu/issue7

Documentation for installation & improve error message when julia binary not found

Author: Pangoraw

README.md

@@ -2,3 +2,15 @@
 
 This extension adds support for the [Julia](https://julialang.org/) language in
 the [zed](https://zed.dev) editor.
+
+
+### Installing Julia / Zed / Zed Julia extension
+1. Install Julia for your platform: https://julialang.org/downloads/
+2. Install Zed for your platform: https://zed.dev/download
+3. Start Zed.
+4. Inside Zed, go to the extensions view by
+executing the ``zed: extensions`` command (click Zed->Extensions).
+5. In the extensions view, simply search for the term ``julia`` in the search box, then select the extension named ``Julia`` and click the install button. You might have to restart Zed after this step.
+
+The Julia Zed extension looks for your Julia binary in the standard locations.
+Make sure that the Julia binary is on your ``PATH``.

src/julia.rs

@@ -14,7 +14,7 @@ impl zed::Extension for JuliaExtension {
         worktree: &zed::Worktree,
     ) -> Result<zed::Command> {
         let Some(julia_bin) = worktree.which("julia") else {
-            return Err("julia not available".to_string());
+            return Err("Unable to find julia binary. Make sure the PATH variable contains the directory where the julia binary is located.".to_string());
         };
         Ok(zed::Command {
             command: julia_bin.to_string(),