Use rbenv executable directly if available (#2824)

Author: vinistock

vscode/src/ruby/rbenv.ts

@@ -1,4 +1,5 @@
 /* eslint-disable no-process-env */
+import * as vscode from "vscode";
 
 import { VersionManager, ActivationResult } from "./versionManager";
 
@@ -7,7 +8,14 @@ import { VersionManager, ActivationResult } from "./versionManager";
 // Learn more: https://github.com/rbenv/rbenv
 export class Rbenv extends VersionManager {
   async activate(): Promise<ActivationResult> {
-    const parsedResult = await this.runEnvActivationScript("rbenv exec ruby");
+    const rbenvExec = await this.findExec(
+      [vscode.Uri.file("/opt/homebrew/bin"), vscode.Uri.file("/usr/local/bin")],
+      "rbenv",
+    );
+
+    const parsedResult = await this.runEnvActivationScript(
+      `${rbenvExec} exec ruby`,
+    );
 
     return {
       env: { ...process.env, ...parsedResult.env },

vscode/src/ruby/shadowenv.ts

@@ -22,7 +22,10 @@ export class Shadowenv extends VersionManager {
       );
     }
 
-    const shadowenvExec = await this.findShadowenvExec();
+    const shadowenvExec = await this.findExec(
+      [vscode.Uri.file("/opt/homebrew/bin")],
+      "shadowenv",
+    );
 
     try {
       const parsedResult = await this.runEnvActivationScript(
@@ -71,24 +74,4 @@ export class Shadowenv extends VersionManager {
       );
     }
   }
-
-  // Tries to find the Shadowenv executable either directly in known paths or in the PATH
-  async findShadowenvExec() {
-    // If we can find the Shadowenv executable in the Homebrew installation path, then prefer it over relying on the
-    // executable being available in the PATH. Sometimes, users might have shell scripts or other extensions that can
-    // mess up the PATH and then we can't find the Shadowenv executable
-    const possibleUris = [vscode.Uri.file("/opt/homebrew/bin/shadowenv")];
-
-    for (const uri of possibleUris) {
-      try {
-        await vscode.workspace.fs.stat(uri);
-        this.outputChannel.info(`Found Shadowenv executable at ${uri.fsPath}`);
-        return uri.fsPath;
-      } catch (error: any) {
-        // continue searching
-      }
-    }
-
-    return "shadowenv";
-  }
 }

vscode/src/ruby/versionManager.ts

@@ -105,4 +105,23 @@ export abstract class VersionManager {
       env: process.env,
     });
   }
+
+  // Tries to find `execName` within the given directories. Prefers the executables found in the given directories over
+  // finding the executable in the PATH
+  protected async findExec(directories: vscode.Uri[], execName: string) {
+    for (const uri of directories) {
+      try {
+        const fullUri = vscode.Uri.joinPath(uri, execName);
+        await vscode.workspace.fs.stat(fullUri);
+        this.outputChannel.info(
+          `Found ${execName} executable at ${uri.fsPath}`,
+        );
+        return fullUri.fsPath;
+      } catch (error: any) {
+        // continue searching
+      }
+    }
+
+    return execName;
+  }
 }