build sytem feature request: persist warnings
I often have this pattern: I hack on GHC in devel2 mode, introducing a few changes that cause warnings all over the place (usually related to imports). I ignore them while I work on the feature.
Now I want to clean the warnings up. I basically only have one option: Switch the settings to make warnings errors, make clean, re-build everything, see where it aborts, fix it, restart the build.
This is annoying.
I would prefer if the build system (in any more) would keep, for every file, the output of the compiler on disc, e.g. with a suffix of .comp-out or something. This way, after a complete build, even without -Werror, I can simply run cat **/*.comp-out (or whatever suffix is suitable), fix all these error in one go, and be done with it.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 8.0.1 |
| Type | FeatureRequest |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Build System |
| Test case | |
| Differential revisions | |
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