hadrian: Add bootstrap scripts for building without cabal-install
These scripts are originally from the cabal-install repo with a few small tweaks.
This utility allows you to build hadrian without cabal-install, which can be useful for packagers. If you are a developer then build hadrian using cabal-install.
If you want to bootstrap with ghc-8.10.5 then run the ./bootstrap script with the
plan-bootstrap-8.10.5.json
file.
bootstrap.py -d plan-bootstrap-8.10.5.json -w /path/to-ghc
The result of the bootstrap script will be a hadrian binary in
_build/bin/hadrian
.
There is a script (using nix) which can be used to generate the bootstrap plans for the range of supported GHC versions using nix.
generate_bootstrap_plans
Otherwise you can run the commands in ./generate_bootstrap_plans directly.