cmd does not work well with OverloadedStrings
Nobody has claimed this yet.
Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 35/100
Research direction
Start by locating the System.Command entry point for cmd and cmd', then inspect the Arg constraint involved in the reported ambiguity. Reproduce the supplied example with OverloadedStrings and determine a compatible resolution; done means the example compiles and runs the intended ls command without the ambiguous type error.
Written by the indexing model from the issue text.
Description
{-# LANGUAGE OverloadedStrings #-}
import System.Command
main :: IO ()
main = do
cmd "ls"
gives:
No instance for (Arg a2) arising from a use of `cmd'
The type variable `a2' is ambiguous
What can we do to about this?
- Dominant language
- Haskell
- Stars
- 6
- Forks
- 0
- PR merge metrics
- No merged PRs in 30d
Getting set up
This project ships no dev container, Dockerfile or contributing guide, so setting up is up to you: start from its README, and see our first-contribution guide for the general steps.
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Similar issues
-
Difficulty 2/5 1-3 hours Newbie friendliness 70/100
-
Difficulty 2/5 1-3 hours Newbie friendliness 72/100
-
Difficulty 2/5 1-3 hours Newbie friendliness 76/100
B-Lang-org/bsc#1130 · 1 comment ·
Maintainers usually reply within 1 day
-
Difficulty 2/5 1-3 hours Newbie friendliness 76/100
compiler-explorer/compiler-explorer#9213 ·
Maintainers usually reply within 1 day
-
language/en needs-triage
Difficulty 2/5 1-3 hours Newbie friendliness 85/100
kubernetes/website#57846 · 2 comments ·
Maintainers usually reply within 2 days