11 Nov
2007
11 Nov
'07
7:46 a.m.
Hi
GHC can be compiled with GHC 5.0 (or something around there). If they add a new feature, they don't use it in GHC for years and years.
*Can* be compiled with GHC 5.0, or *is* compiled?
Can. If a feature goes horribly wrong, or a build is entirely broken in some subtle but fundamental way that isn't noticed for ages, then could go back to GHC 5 and bootstrap off that. In reality, its bootstrapped with itself in stages. Thanks Neil