ghc-9.6.6.20240708

Switch to the rebuilt 9.6.6 bootstrap

ghc-9.10.1-aarch64-unknown-openbsd.tar.xz

Consolidate '-e' edit command parsing into ask_cmd(), simplifying

the main '-e' loop.

No functional change.

ghc-8.10.3.20210102

fixup: cabal 8.10.3