fix: detect core src directory

vscode-lean4/src/utils/leanInstaller.ts

@@ -1,6 +1,6 @@
-import { window, TerminalOptions, OutputChannel, Disposable, EventEmitter, ProgressLocation, Uri } from 'vscode'
+import { window, TerminalOptions, OutputChannel, EventEmitter, Uri } from 'vscode'
 import { toolchainPath, addServerEnvPaths, getPowerShellPath, shouldAutofocusOutput, isRunningTest } from '../config'
-import { ExecutionExitCode, ExecutionResult, batchExecute, batchExecuteWithProgress } from './batch'
+import { ExecutionExitCode, ExecutionResult, batchExecute } from './batch'
 import { readLeanVersion, isCoreLean4Directory } from './projectInfo';
 import { join } from 'path';
 import { logger } from './logger'

vscode-lean4/src/utils/projectInfo.ts

@@ -15,9 +15,26 @@ export async function isCoreLean4Directory(path: Uri): Promise<boolean> {
     const licensePath = Uri.joinPath(path, 'LICENSE').fsPath
     const licensesPath = Uri.joinPath(path, 'LICENSES').fsPath
     const srcPath = Uri.joinPath(path, 'src').fsPath
-    return await fileExists(licensePath)
+
+    const isCoreLean4RootDirectory =
+        await fileExists(licensePath)
         && await fileExists(licensesPath)
         && await fileExists(srcPath)
+    if (isCoreLean4RootDirectory) {
+        return true
+    }
+
+    const initPath = Uri.joinPath(path, 'Init').fsPath
+    const leanPath = Uri.joinPath(path, 'Lean').fsPath
+    const kernelPath = Uri.joinPath(path, 'kernel').fsPath
+    const runtimePath = Uri.joinPath(path, 'runtime').fsPath
+
+    const isCoreLean4SrcDirectory =
+        await fileExists(initPath)
+        && await fileExists(leanPath)
+        && await fileExists(kernelPath)
+        && await fileExists(runtimePath)
+    return isCoreLean4SrcDirectory
 }
 
 // Find the root of a Lean project and return an optional WorkspaceFolder for it,