## Summary The GHC bindist for Windows for 9.0.1 includes a `ghc.exe` file, but not a `ghc-9.0.1.exe` file. Previous versions of GHC included both. This change confuses Stack's executable detection mechanism in some cases, specifically when a _different_ `ghc-9.0.1.exe` is on the `PATH`, as occurs for example with GitHub Actions. ## Steps to reproduce Unpacking the GHC bindist will demonstrate the lack of file. To demonstrate the bug triggered in Stack: 1. Place a dummy file `ghc-9.0.1.exe` somewhere on the `PATH` 2. Run `stack setup ghc-9.0.1` (tested using Stack 2.7.1) 3. Installation will fail with an error such as: ``` Found an invalid compiler at "C:\\Users\\snoyb\\.cargo\\bin\\ghc-9.0.1.EXE": UnliftIO.Exception.throwString called with: Could not find any of: ["C:\\Users\\snoyb\\.cargo\\bin\\ghc-pkg-9.0.1.EXE","C:\\Users\\snoyb\\.cargo\\bin\\ghc-pkg.exe"] ``` ## Expected behavior It would be ideal to continue including the `ghc-9.0.1.exe` executables. In the meantime, however, I intend to modify Stack's installer logic to deal with both cases. ## Environment * GHC version used: 9.0.1 Optional: * Operating System: Windows * System Architecture: x86_64