Cabal 3.10.1.0 ignoring `-fdiagnostics-color` option
- Dominant language
- Haskell
- Stars
- 1.7k
- Forks
- 750
- Avg merge
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- Merged PRs (30d)
- 28
Description
**Describe the bug**
There is no way to disable GHC diagnostic coloring.
**To Reproduce**
Steps to reproduce the behavior:
issue `cabal build --ghc-options=-fdiagnostics-color=never` and watch colored errors emerge.
**Expected behavior**
With above args, uncolored error output.
**System information**
- Operating system
OS X 13.4 (ARM)
- `cabal`, `ghc` versions
cabal 3.10.1.0, ghc 9.6.2
**Additional context**
If you run `cabal -v --ghc-options=-fdiagnostics-color=never` and retrieve the GHC command, you can (a) see that the option is NOT being added and (b) if you issue the GHC command yourself and add `-fdiagnostics-color=never`, the colorization goes away.
Contributor guide
Research direction
Start by reproducing the issue with cabal build --ghc-options=-fdiagnostics-color=never, then inspect the verbose GHC command generation and option-forwarding path. Done means the option appears in the generated GHC command and the resulting diagnostic output is uncolored.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- haskell
- Domain
- build-system
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 42/100