Fix default paths for rvm-auto-ruby

This commit not only checks the path:

`/home/user/.rvm/bin` (done before)

It also checks if it is in the PATH already and in:
`/usr/local/rvm/bin`

It additionally adds some output if the initialization fails

vscode/src/ruby/rvm.ts

@@ -19,13 +19,53 @@ export class Rvm extends VersionManager {
       ".to_json)",
     ].join("");
 
-    const result = await asyncExec(
-      `${path.join(os.homedir(), ".rvm", "bin", "rvm-auto-ruby")} -W0 -rjson -e '${activationScript}'`,
-      {
-        cwd: this.bundleUri.fsPath,
-      },
-    );
+    const basePaths = [
+      path.join(os.homedir(), ".rvm", "bin"),
+      "/usr/local/rvm/bin",
+      "/usr/share/rvm/bin",
+    ];
+    // check if rvm-auto-ruby is in the PATH
+    try {
+      const pathCheck = await asyncExec("which rvm-auto-ruby");
+      this.outputChannel.info(`Output check: ${pathCheck.stdout}`);
+      if (pathCheck.stdout.includes("rvm-auto-ruby")) {
+        // rvm-auto-ruby is in the PATH variable
+        basePaths.unshift("");
+      }
+    } catch (error) {
+      const pathOutput = await asyncExec("echo $PATH");
+      this.outputChannel.info(
+        `Could not find rvm-auto-ruby on PATH: ${error}, current PATH: ${pathOutput.stdout}`,
+      );
+    }
 
+    let result = { stderr: "" };
+    for (const basePath of basePaths) {
+      try {
+        const resultOfPath = await asyncExec(
+          `${path.join(basePath, "rvm-auto-ruby")} -W0 -rjson -e '${activationScript}'`,
+          {
+            cwd: this.bundleUri.fsPath,
+          },
+        );
+        result = resultOfPath;
+        this.outputChannel.info(
+          `Activated rvm env with this path: ${path.join(basePath, "rvm-auto-ruby")}`,
+        );
+        break;
+      } catch (error) {
+        this.outputChannel.info(
+          `Checking if we can activate rvm env with this path: ${path.join(basePath, "rvm-auto-ruby")}`,
+        );
+      }
+    }
+
+    if (result.stderr === "") {
+      this.outputChannel.error(
+        `Could not activate rvm based environment with these paths: ${basePaths.join(", ")}`,
+      );
+      return { error: true };
+    }
     const parsedResult = JSON.parse(result.stderr);
 
     // Invoking `rvm-auto-ruby` doesn't actually inject anything into the environment, it just finds the right Ruby to