How do I fix this error when tring to install ghc from ghcub?-CodePudding

Here is the error message:

[ Info  ] Merging file tree from "C:\ghcup\tmp\ghcup-d5bf0fe7341a" to "C:\ghcup\ghc\8.10.7"

[ Warn  ] Couldn't remove build dir C:\ghcup\tmp\ghcup-d5bf0fe734as: C:\ghcup\tmp\ghcup-d5bf0fe7341a01bc\ghc-8.10.7\mingw\x86_64-wgcrt0.o: removePathForcibly:removePathForcibly:removePathForciblyibly:removePathForcibly:removePathForcibly:DeleteFile "\\\\?\\C:\cup-d5bf0fe7341a01bc\\ghc-8.10.7\\mingw\\x86_64-w64-mingw32\\lib\ission denied (The process cannot access the file because it is being used by another process.)

[ Error ] Failed to merge file tree from C:\ghcup\tmp\ghcup-d5bf0-8.10.7 to C:\ghcup\ghc\8.10.7

[ ...   ] exception was: MoveFile "C:\\ghcup\\tmp\\ghcup-d5bf0fe7.10.7\\mingw\\x86_64-w64-mingw32\\lib\\binmode.o" "C:\\ghcup\\ghc\\x86_64-w64-mingw32\\lib\\binmode.o": permission denied (The process cannot access the file because it is being used by another process.)

[ ...   ] ...you may need to delete C:\ghcup\ghc\8.10.7 manually. Make sure it's gone.

[ Error ] Also check the logs in C:\ghcup\logs

I'm not sure what other process the file is being used for, I checked the logs and they say basically the same as these error messages and I tried just moving the contents of ghcup-d5bf0-8.10.7 to a folder called 8.10.7 in ghcub\ghc and I still got an error when trying to use ghci. I'm really unfamiliar with all of this, so I've just been following the instructions on Haskell.org to the letter. I am on Windows, and installed ghcup by copying the command on haskell.org/ghcup/ into PowerShell.

Update: I tried running ghcup install ghc again, and this time it seemed to successfully install. I also installed cabal and stack this way. However, running ghci still returns ghci: command not found in Git Bash. Running stack ghci returns the following:

Preparing to install GHC to an isolated location.
This will not interfere with any system-level installation.
Already downloaded.
Already downloaded.
Already downloaded.
Decompressing ghc-9.0.2.tar.xz...

7-Zip 9.20  Copyright (c) 1999-2010 Igor Pavlov  2010-11-18

Processing archive: C:\Users\arams\AppData\Local\Programs\stack\x86_64-windows\ghc-9.0.2.tar.xz

Extracting  ghc-9.0.2.tar

Everything is Ok

Size:       2890045440
Compressed: 487700912
Extracting ghc-9.0.2.tar...
Extracted total of 2989 files from ghc-9.0.2.tar
Problem while decompressing C:\Users\arams\AppData\Local\Programs\stack\x86_64-windows\ghc-9.0.2-tmp-56673b68e065083a\ghc-9.0.2.tar

CodePudding user response：

Not a direct answer, but:

Haskell tools work more smoothly on Linux than on Windows.

Consider using Windows Subsystem for Linux (WSL2) instead of native Windows.

Also,the command ghcup tui shows a very convenient terminal user interface (TUI).

CodePudding user response：

I'm not sure what the problem actually was, but running ghcup nuke (and completely deleting everything it didn't catch), then reinstalling it by running

Set-ExecutionPolicy Bypass -Scope Process -Force;[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072;Invoke-Command -ScriptBlock ([ScriptBlock]::Create((Invoke-WebRequest https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 -UseBasicParsing))) -ArgumentList $true

in PowerShell solved my problem. I recently cleared out some storage, so lack of space on my disk might have been the problem?