Allow GHC defaults to be modified with an environment variable
I wanted to do this to turn -fsimple-list-literals on and off for NoFib without editing a million makefiles or recompiling GHC, but I bet there are other reasons. GHC's validate should probably prompt the user to verify they want to continue of the variable is set, and should issue a loud warning at the very end indicating what options were set by the variable.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.8.2 |
| Type | FeatureRequest |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |